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Orthopaedic Proceedings
Vol. 91-B, Issue SUPP_I | Pages 94 - 94
1 Mar 2009
Owers K Scougall P Dabirrahmani D Wernecke G Jhamb A Walsh W
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Negative ulnar variance, lunate shape and increased load transmission are associated with Kienbock’s disease. This may reflect trabecular alignment being more susceptible to shear forces along “fault planes” in Type 1 lunates, causing microfractures and avascular necrosis. The aim of this study was to assess the relationship between lunate bone structure, density and ulnar variance. Standard 90/90 radiographs of 22 cadaveric wrists were taken for ulnar variance and lunate shape. The lunates were harvested and routine CT scans (1mm) were taken in 22/22 in the coronal, sagittal and transverse planes. DICOM files were analysed using Mimics (Materialise, Belgium) to measure Hounsfield units. MicroCT scans (SkyScan, Belgium) (40 μm) were taken in 10/22 in the coronal plane and measured for trabecular angle at the proximal and distal joint surfaces and the ‘tilting angle’ (between scaphoid and radius joint surfaces). Data was anlaysed using one-way ANOVA tests using SPSS for Windows. Negative ulnar variance was noted in 7/22, neutral 10/22 and positive 5/22. Lunate shape according to Zapico was 0/22 Type 1, 18/22 Type 2 and 4/22 Type 3. Lunate bone density was significantly lower in the ulnar positive specimens compared to ulnar negative and neutral (p< 0.001) (fig. 1). The average trabecular angle measured 84.7° (+/− 4.5°) at the proximal and 90.3° (+/− 2.6°) at the distal joint surfaces and tilting angle was 115.7° (+/− 12.0°) (fig. 2). The 50% slice on the microCT correlated best with xray measurements of this angle. This study quantifies the previous finding that load transmission through the lunate and hence lunate bone density is related to ulnar variance and that this is higher in ulnar negative wrists. MicroCT is a useful modality to assess trabecular structure and supports the ‘fault plane’ hypothesis of Kienbock’s Disease


Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_12 | Pages 72 - 72
1 Dec 2022
Kendal J Fruson L Litowski M Sridharan S James M Purnell J Wong M Ludwig T Lukenchuk J Benavides B You D Flanagan T Abbott A Hewison C Davison E Heard B Morrison L Moore J Woods L Rizos J Collings L Rondeau K Schneider P
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Distal radius fractures (DRFs) are common injuries that represent 17% of all adult upper extremity fractures. Some fractures deemed appropriate for nonsurgical management following closed reduction and casting exhibit delayed secondary displacement (greater than two weeks from injury) and require late surgical intervention. This can lead to delayed rehabilitation and functional outcomes. This study aimed to determine which demographic and radiographic features can be used to predict delayed fracture displacement. This is a multicentre retrospective case-control study using radiographs extracted from our Analytics Data Integration, Measurement and Reporting (DIMR) database, using diagnostic and therapeutic codes. Skeletally mature patients aged 18 years of age or older with an isolated DRF treated with surgical intervention between two and four weeks from initial injury, with two or more follow-up visits prior to surgical intervention, were included. Exclusion criteria were patients with multiple injuries, surgical treatment with fewer than two clinical assessments prior to surgical treatment, or surgical treatment within two weeks of injury. The proportion of patients with delayed fracture displacement requiring surgical treatment will be reported as a percentage of all identified DRFs within the study period. A multivariable conditional logistic regression analysis was used to assess case-control comparisons, in order to determine the parameters that are mostly likely to predict delayed fracture displacement leading to surgical management. Intra- and inter-rater reliability for each radiographic parameter will also be calculated. A total of 84 age- and sex-matched pairs were identified (n=168) over a 5-year period, with 87% being female and a mean age of 48.9 (SD=14.5) years. Variables assessed in the model included pre-reduction and post-reduction radial height, radial inclination, radial tilt, volar cortical displacement, injury classification, intra-articular step or gap, ulnar variance, radiocarpal alignment, and cast index, as well as the difference between pre- and post-reduction parameters. Decreased pre-reduction radial inclination (Odds Ratio [OR] = 0.54; Confidence Interval [CI] = 0.43 – 0.64) and increased pre-reduction volar cortical displacement (OR = 1.31; CI = 1.10 – 1.60) were significant predictors of delayed fracture displacement beyond a minimum of 2-week follow-up. Similarly, an increased difference between pre-reduction and immediate post reduction radial height (OR = 1.67; CI = 1.31 – 2.18) and ulnar variance (OR = 1.48; CI = 1.24 – 1.81) were also significant predictors of delayed fracture displacement. Cast immobilization is not without risks and delayed surgical treatment can result in a prolong recovery. Therefore, if reliable and reproducible radiographic parameters can be identified that predict delayed fracture displacement, this information will aid in earlier identification of patients with DRFs at risk of late displacement. This could lead to earlier, appropriate surgical management, rehabilitation, and return to work and function


Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_6 | Pages 139 - 139
1 Jul 2020
Sims L Aibinder W Faber KJ King GJ
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Essex-Lopresti injuries are often unrecognized acutely with resulting debilitating adverse effects. Persistent axial forearm instability may affect load transmission at both the elbow and wrist, resulting in significant pain. In the setting of both acute and chronic injuries metallic radial head arthroplasty has been advocated, however there is little information regarding their outcome. The purpose of this study was to assess the efficacy of a radial head arthroplasty to address both acute and chronic Essex-Lopresti type injuries. A retrospective review from 2006 to 2016 identified 11 Essex-Lopresti type injuries at a mean follow-up of 18 months. Five were diagnosed and treated acutely at a mean of 11 days (range, 8 to 19 days) from injury, while 6 were treated in a delayed fashion at a mean of 1.9 years (range, 2.7 months to 6.2 years) from injury with a mean 1.5 (range, 0 to 4) prior procedures. The cohort included 10 males with a mean age was 44.5 years (range, 28 to 71 years). A smooth stem, modular radial head arthroplasty was used in all cases. Outcomes included range of motion and radiographic findings such as ulnar variance, capitellar erosion, implant positioning and implant lucency using a modification of the method described by Gruen. Reoperations, including the need for ulnar shortening osteotomy, were also recorded. Three patients in each group (55%) reported persistent wrist pain. The mean ulnar variance improved from +5 mm (range, 1.8 to 7 mm) to +3.7 mm (range, 1 to 6.3 mm) at the time of final follow-up or prior to reoperation. Three (50%) patients in the chronic group underwent a staged ulnar shortening osteotomy (USO) to correct residual ulnar positive variance and to manage residual wrist pain. There were no reoperations in the acute group. Following USO, the ulnar variance in those three cases improved further to +3.5, +2.1, and −1.1 mm. No radial head prostheses required removal. Capitellar erosion was noted in five (45%) elbows, and was rated severe in one, moderate in two, and mild in two. Lucency about the radial head prosthesis stem was noted in eight (73%) cases, and rated as severe in 2 (18%), based on Gruen zones. Treatment of acute and chronic Essex-Lopresti lesions with radial head arthroplasty often results in persistent wrist pain. In the chronic setting, a planned USO was often necessary to restore axial forearm stability after radial head arthroplasty. Essex-Lopresti lesions represent a rare clinical entity that are difficult treat, particularly in the chronic setting. Early recognition and management with a smooth stem modular radial head arthroplasty may provide improved outcomes compared to chronic reconstruction


Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_3 | Pages 17 - 17
1 Mar 2021
Stephens T Goetz T Glaris Z
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Ulnocarpal impaction (UCI) is a common cause of ulnar-sided wrist pain. UCI typically occurs in wrists with positive ulnar variance, which causes altered loading mechanics between the ulnar head, lunate and triquetrum. However, many individuals with positive ulnar variance never develop UCI, and some with neutral or negative ulnar variance do experience UCI. This suggests that other variables contribute to the development of UCI. Suspected culprits include lunate morphology, and dynamic changes with loaded (grip) pronation. If these anatomic variations are contributing to UCI, we expect them to influence functional impairment scores. Therefore, the objective of this study was to evaluate the relationship between radiographic parameters and pre-surgical upper extremity patient-rated outcomes scores (PROS) in patients with a diagnosis of UCI. Retrospective cohort study of patients undergoing ulnar shortening osteotomy or arthroscopic wafer procedure for UCI. Data derived from prospectively collected departmental database that captured demographic, clinical, functional and radiographic information. Radiographic parameters evaluated were: lunate morphology [presence vs. absence of hamate facet; Antuna-Zapico (A-Z) classification], and dynamic changes on grip view [difference in lunate-ulnar head distance (LUD); difference in lunate uncovering index (LUI)]. PROS assessed were QuickDASH and Patient-Rated Wrist Evaluation (PRWE) scores, collected at patient enrolment. ANOVA was used to assess for differences in PROS between A-Z classification groups. Student's t-test was used to assess for differences in PROS based on presence/absence of a hamate facet. Regression analysis evaluated a relationship between change in LUD with grip and PROS, and change in LUI with grip and PROS. Preliminary analysis included 23 wrists, with a mean patient age of 48.9 years [standard deviation (SD) 14.5 years]. Forty-eight percent were male, and the dominant limb was involved in 52.2% of cases. Average QuickDASH and PRWE scores at enrolment were 50.9 (SD 22.2) and 62.2 (SD 22.0), respectively. Assessment of radiographs revealed 17 patients (73.9%) without a hamate facet. Five patients (21.7%) had A-Z Type I lunate morphology, and nine (39.1%) had Type II and Type III morphology, respectively. ANOVA revealed no differences in enrolment QuickDASH (p = 0.185) or PRWE (p = 0.256) scores between A-Z classification groups. Similarly, Student's t-test found no difference based on presence/absence of a hamate facet (QuickDASH p = 0.594; PRWE p = 0.573). Regression analysis revealed no relationship between change in LUD with grip and PROS (QuickDash R2 = 0.020, p = 0.619; PRWE R2 = 0.009, p = 0.733), and no relationship between change in LUI with grip and PROS (QuickDash R2 = 0.000, p = 0.913; PRWE R2 = 0.010, p = 0.722). Preliminary results suggest no relationship between A-Z classification lunate morphology, presence/absence of a hamate facet, change in LUD, or change in LUI and pre-surgical PROS. It is unclear if our findings represent the true relationship between these radiographic parameters and PROS, or reflect our preliminary sample size. Data analysis is ongoing to add clarity to this question


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_II | Pages 168 - 168
1 May 2011
Brogren E Hofer M Petranek M Wagner P Dahlin L Atroshi I
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Purpose: The purpose was to investigate the relationship between distal radius fracture malunion and arm-related disability. Methods: This prospective population-based cohort study included 143 patients above 18 years with acute distal radius fracture treated at one emergency hospital with either closed reduction and cast (55 patients) or with closed reduction and external and/or percutaneous pin fixation (88 patients). The patients were evaluated with the disabilities of the arm, shoulder and hand (DASH) questionnaire at baseline (inquiring about disabilities before fracture) and at 6, 12 and 24 months after the fracture. The 12-month follow-up also included the SF-12 health status questionnaire as well as clinical and radiographic examination. The patients were classified according to the degree of malunion (defined as dorsal tilt > 10 degrees or ulnar variance > 0 mm) into three groups; no malunion, malunion involving either dorsal tilt or ulnar variance, and malunion involving both dorsal tilt and ulnar variance. A Cox regression analysis was performed to determine the relationship between the 1-year DASH score (≥ 15 or < 15) and malunion adjusting for age, sex, fracture AO type, and treatment method and the relative risk (RR) of obtaining the higher DASH score was calculated. The number needed to harm (NNH) associated with malunion was calculated. Results: The mean DASH score at 1 year after fracture was about 10 points worse with each degree of increased malunion. The degree of malunion also correlated with SF-12 score, grip strength and supination. The regression analysis showed significantly higher disability with each degree of malunion compared to no malunion; for malunion involving either dorsal tilt or ulnar variance the RR was 2.4 (95% CI 1.0–5.7; p=0.038), and for malunion involving both dorsal tilt and ulnar variance the RR was 3.2 (95% CI 1.4–7.5; p=0.007). The NNH was 2.5 (95% CI 1.8–5.4). Conclusion: Malunion after distal radius fracture was associated with higher arm-related disability


Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_8 | Pages 63 - 63
1 Aug 2020
Hoffer A Banaszek D Potter J Broekhuyse H
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Distal radius fractures are among the most common fractures seen in the emergency department. Closed reduction can provide definitive management when acceptable radiographic parameters are met. Repeated attempts of closed reduction are often performed to improve the alignment and avoid operative management. However, multiple reduction attempts may worsen dorsal comminution and lead to eventual loss of reduction, resulting in no demonstrable benefit. We hypothesize that compared to one closed reduction attempt, repeated closed reduction of extra-articular, dorsally angulated, displaced distal radius fractures has a low success rate in the prevention of operative fixation and improvement of radiographic parameters. Initial and post reduction radiographs for all distal radius fractures managed at Vancouver General Hospital between 2015 and 2018 were reviewed. Inclusion criteria were based on the AO fracture classification and included types 23-A2.1, 23-A2.2 and 23-A3. Exclusion criteria included age less than 18, intra-articular involvement with more than two millimeters of displacement, volar or dorsal Barton fractures, fracture-dislocations, open fractures and volar angulation of the distal segment. Distal radius fractures that met study criteria and underwent two or more attempts of closed reduction were matched by age and gender with fractures that underwent one closed reduction. Radiographic parameters including radial height and inclination, ulnar variance and volar tilt were compared between groups. Sixty-eight distal radius fractures that met study criteria and underwent multiple closed reduction attempts were identified. A repeated closed reduction initially improved the radial height (p = 0.03) and volar tilt (p < 0.001). However, by six to eight weeks the improvement in radial height had been lost (p = 0.001). Comparison of radiographic parameters between the single reduction and multiple reduction groups revealed no difference in any of the radiographic parameters at one week of follow up. By six to eight weeks, the single reduction group had greater radial height (p = 0.01) ulnar variance (p = 0.05) and volar tilt (p = 0.02) compared to the multiple reduction group. With respect to definitive management, 38% of patients who underwent a repeated closed reduction subsequently received surgery, compared to 13% in the single reduction group (p = 0.001). Repeated closed reduction of extra-articular, dorsally angulated, displaced distal radius fractures did not improve alignment compared to a single closed reduction and was associated with increased frequency of surgical fixation. The benefit of repeating a closed reduction should be carefully considered when managing distal radius fractures of this nature


Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_6 | Pages 122 - 122
1 Jul 2020
Hoffer A Banaszek D Broekhuyse H Potter J
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Distal radius fractures are among the most common fractures seen in the emergency department. Closed reduction can provide definitive management when acceptable radiographic parameters are met. Repeated attempts of closed reduction are often performed to improve the alignment and avoid operative management. However, multiple reduction attempts may worsen dorsal comminution and lead to eventual loss of reduction, resulting in no demonstrable benefit. We hypothesize that compared to one closed reduction attempt, repeated closed reduction of extra-articular, dorsally angulated, displaced distal radius fractures has a low success rate in the prevention of operative fixation and improvement of radiographic parameters. Initial and post reduction radiographs for all distal radius fractures managed at Vancouver General Hospital between 2015 and 2018 were reviewed. Inclusion criteria were based on the AO fracture classification and included types 23-A2.1, 23-A2.2 and 23-A3. Exclusion criteria included age less than 18, intra-articular involvement with more than two millimeters of displacement, volar or dorsal Barton fractures, fracture-dislocations, open fractures and volar angulation of the distal segment. Distal radius fractures that met study criteria and underwent two or more attempts of closed reduction were matched by age and gender with fractures that underwent one closed reduction. Radiographic parameters including radial height and inclination, ulnar variance and volar tilt were compared between groups. Sixty-eight distal radius fractures that met study criteria and underwent multiple closed reduction attempts were identified. A repeated closed reduction initially improved the radial height (p = 0.03) and volar tilt (p < 0.001). However, by six to eight weeks the improvement in radial height had been lost (p = 0.001). Comparison of radiographic parameters between the single reduction and multiple reduction groups revealed no difference in any of the radiographic parameters at one week of follow up. By six to eight weeks, the single reduction group had greater radial height (p = 0.01) ulnar variance (p = 0.05) and volar tilt (p = 0.02) compared to the multiple reduction group. With respect to definitive management, 38% of patients who underwent a repeated closed reduction subsequently received surgery, compared to 13% in the single reduction group (p = 0.001). Repeated closed reduction of extra-articular, dorsally angulated, displaced distal radius fractures did not improve alignment compared to a single closed reduction and was associated with increased frequency of surgical fixation. The benefit of repeating a closed reduction should be carefully considered when managing distal radius fractures of this nature


Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_8 | Pages 10 - 10
1 Aug 2020
Zhang Y White N Clark T Dhaliwal G Samuel T Saini R Goetz TJ
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Ulnar shortening osteotomy (USO) is a procedure performed to alleviate ulnar sided wrist pain caused by ulnar impaction syndrome (UIS) and/or triangular fibrocartilage complex (TFCC) injury. Presently, non-union rates for ulnar shortening osteotomy is quoted to be 0–18% in the literature. However, there is a dearth of literature on the effect of site of osteotomy and plate placement on the rate of complications like a delayed union, symptomatic hardware and need for second surgery for hardware removal. In this study, we performed a multi-centered institutional review of ulnar shortening osteotomies performed, focusing on plate placement (volar vs. dorsal) and osteotomy site (distal vs. proximal) and determining if it plays a role in reducing complications. This study was a multi-centered retrospective chart review. All radiographs and charts for patients that have received USO for UIS or TFCC injury between 2013 and 2017 from hand and wrist fellowship-trained surgeons in Calgary, Alberta and Winnipeg, Manitoba were examined. Basic patient demographics including age, sex, past medical history, and smoking history were recorded. Postoperative complications such as delayed union, non-union, infection, chronic regional pain syndrome, hardware irritation requiring removal were evaluated with a two-year follow-up period. Osteotomy sites were analyzed based on the location in relation to the entire length of the ulna on forearm radiographs. Surgical techniques including volar vs. dorsal plating, oblique vs. transverse osteotomy cuts, and plate type were documented. Continuous variables of interest were summarized as mean or medians with standard deviation or inter-quartile range as appropriate. Differences in baseline characteristics were determined by t-test or one-way ANOVA for continuous variables and chi-square or Fischer exact test for dichotomous variables. All analyses were conducted using SPSS V24.0 (Chicago, IL, USA). All statistical tests were considered significant if p < 0.05. Between 2013–2017 there were 117 ulnar shortening osteotomies performed. The average age of patients was 46.2 ± 16.2, with 62.4% being female. The mean pre-operative ulnar variance was +3.89 ± 2.17 mm and post-operative ulnar variance was −1.90 ± 1.80 mm. 84.6% of the plates were placed on the volar aspect of the ulna and 14.5% were placed on the dorsal aspect. An oblique osteotomy was made 99.1% of the time. In measuring osteotomy placement, the average placement was made in the distal 1/3 of the ulna. Overall, there was a 40% complication rate. Hardware irritation requiring removal encompassed 23%, non-union 14%, and wound infection covered 0.8%. When comparing dorsal vs volar plating, there was no statistically significant difference for non-union or hardware removal. Similarly, in evaluating osteotomy level, there was no statistical difference between proximal vs distal osteotomy for non-union and hardware removal. In this multi-centered retrospective review of ulnar shortening osteotomies, we found that there was an overall complication rate of 40%. There was no statistically significant difference in complication rates between dorsal vs volar plate placement or proximal vs distal osteotomy sites. Further studies examining other potential risk factors in lowering the complication rate would be beneficial


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_IV | Pages 572 - 573
1 Nov 2011
Pichora D Ma B Kunz M Alsanawi H Rudan J
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Purpose: We compare the accuracy and precision of patient-specific plastic guides versus computer-assisted navigation for distal radius osteotomy (DRO). We hypothesize that guides would provide similar accuracy and precision compared to computer-assisted surgery, and that they would be faster to use than navigated surgery. Method: We used CT scans, computer models, and planned corrections of radii from seven patients who had previously received computer-assisted DRO. The planned correction included the locations and directions of the screw holes for the fixation plate on the intact deformed radius. Using computer-assisted technique, the surgeon drills the holes for the fixation plate using computer navigation before performing the osteotomy; after cutting the radius, the plate is fixated to the distal radius, and the distal radius is distracted until the holes in the proximal radius align with the holes of the fixation plate. A patient-specific guide can be manufactured that fits on the intact deformed radius to guide the drilling of the screw holes. The guide is designed so that it mates exactly with the dorsal surface of the radius. Each guide was designed using custom software and manufactured in ABS plastic using a 3D printer. The surgeon places the guide on the radius and uses a metal drill sleeve in each guide hole to guide the drilling of the plate screw holes. We manufactured urethane plastic phantoms of the seven deformed radii. Our laboratory experiment had six surgeons each perform four computer-assisted and four patient-specific guide procedures on the phantom radii; the specimen and type of guidance were randomly chosen. The time from the start of the procedure to when the shaping of the distal radius was completed was recorded; we did not record the time required to cut and fixate the radius because this time does not depend on the type of guidance used. The plated phantoms were assessed for errors in ulnar variance, radial inclination, and volar tilt as compared to the planned correction. Results: The results for the computer-assisted procedures were: ulnar variance error (−0.2 +/ − 2.0 mm), radial inclination error (−0.9 +/ − 6.1 deg), volar tilt error (−0.9 +/ − 1.9 deg). The results for the customized jig procedures were: ulnar variance error (−0.7 +/ − 0.6 mm), radial inclination error (−1.0 +/ − 1.4 deg), volar tilt error (−0.4 +/ − 2.2 deg). There were no significant differences detected in the means of the measurements (significance level 0.05) using the two-sample t-test. Significant differences were detected in the variances of the ulnar variance and radial inclination errors (significance level 0.05) using Levene’s test. It took (705 +/ − 144 sec) to perform the computer-assisted procedures and (214 +/ − 98 sec) to perform the customized guide procedures. The differences between the means and variances were statistically significant. Conclusion: Patient-specific guides are as accurate, more precise, and require less time than computer-assisted navigation for DRO


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XVII | Pages 36 - 36
1 May 2012
Kennedy C Kennedy M Niall D Devitt A
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Introduction. The classical Colles fracture (extraarticular, dorsally angulated distal radius fracture) in patients with osteoporotic bone is becoming increasingly more frequent. There still appears to be no clear consensus on the most appropriate surgical management of these injuries. The purpose of this study is to appraise the use of percutaneous extra-focal pinning, in the management of the classical colles fracture. Methods. We retrospectively analysed 72 consecutive cases of Colles fractures treated with interfragmentary K-wire fixation, in female patients over sixty years of age, in two orthopaedic centres, under the care of twelve different orthopaedic surgeons. We correlated the radiographic distal radius measurements (ulnar variance, volar tilt, and radial inclination) at the pre-operative and intra-operative stages with the final radiographic outcome. Result. Mean dorsal angulation was 21° at time of presentation. Closed reduction significantly improved fracture position to a mean of 2.7° volar angulation (p<0.05). Mean angulation at time of k-wire removal was 1.6° dorsal, this was not significant in comparison to post reduction measurements (p< 0.05). Mean ulnar variance at time of presentation was 2.5mm (range 7.4 to -4.2). Reduction improved fracture displacement to a mean of 0mm, which was statistically significant (p<0.05). Mean ulnar variance at time of k-wire removal was 2.4mm (p<0.05). 56.8% of cases demonstrated radial shortening of 2mm or more. Conclusion. In female patients over 60 years of age, the best predictor of radial length, when K-wire fixation is to be used, is the radial length prior to fracture reduction. Thus if there is radial shortening visible in the initial radiographs as measured in terms of ulnar variance, one should consider a method of fixation other than inter-fragmentary K-wires


Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_5 | Pages 14 - 14
1 Apr 2022
Dorman S Fernandes J
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Introduction. Acquired chronic radial head (RH) dislocations present a significant surgical challenge. Co-existing deformity, length discrepancy and RH dysplasia, in multiply operated patients often preclude acute correction. This study reports the clinical and radiological outcomes in children, treated with circular frames for gradual RH reduction. Materials and Methods. Patient cohort from a prospective database was reviewed to identity all circular frames for RH dislocations between 2000–2021. Patient demographics, clinical range and radiographic parameters were recorded. Results. From a cohort of 127 UL frames, 30 chronic RH dislocations (14 anterior, 16 posterior) were identified. Mean age at surgery was 10yrs (5–17). Six pathologies were reported (14 post-traumatic, 11 HME, 2 Nail-Patella, 1 Olliers, OI, Rickets). 70% had a congruent RH reduction at final follow-up. Three cases re-dislocated and 6 had some mild persistent incongruency. Average follow up duration was 4.1yrs (9mnths-11.5yrs). Mean radiographic correction achieved in coronal plane 9. o. , sagittal plane 7. o. and carrying angle 12. o. Mean ulna length gained was 7mm and final ulnar variance was 7mm negative (congenital). All cases achieved bony union with 2 requiring bone grafting. Mean frame duration was 166 days. Mean final range of motion was 64. o. supination, 54 . o. pronation, 2. o. to 138. o. flexion. 5 complications and 7 further operations were reported. Conclusions. The majority of children having frame correction achieve complete correction or minor subluxation, which is well tolerated clinically. Frame assisted reduction is an effective tool for selective complex cases irrespective of the pathology driving the RH dislocation


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_I | Pages - 49
1 Mar 2002
Obert L Grelet V Jeunet L Polette A Tropet Y Garuio P
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Purpose: Fractures o the distal radius remain a problem difficult to resolve. A post-operative displacement is observed in about half the cases. The displacement is generally a secondary shortening with mis- or unrecognized metaphyseal comminution. In the United State, autologous bone graft is widely used, which, like bone substitutes also used in France, allows appropriate filling of the metaphyseal comminution which always remains open after pin withdrawal. We present a prospective series of 30 patients with a fracture of the distal radius treated by pin or plate fixation in combination with Norian to fill the substance loss subsequent to metaphyseal comminution. Material and methods: Thirty patients were treated between November 1998 and March 1999 for fracture of the distal radius with posterior displacement. The inclusion criterion was comminution > 2 according to the Laulan classification. All were treated by osteosynthesis with plate or pin fixation and insertion of Norian. There were 26 women and 4 men. Twenty-two patients had an articular fracture. Plate fixation was used in ten patients and pin fixation in 19. The fracture involved the dominant side in 21 cases. The fracture was closed in all cases. Norian was injected after osteosynthesis following the recommendations of the manufacturer (impaction of the cavity rims created by the comminution, no motion for 10 min after injection). All patients were reviewed at 1, 3 and 6 months and at last follow-up. The flexion-extension and pronation-supination amplitudes were measured, as was the muscle force. Results: All patients were reviewed with a minimum follow-up of at least 2 years. Mean age was 65 years (545–82). All fractures had consolidated. There were three defective calluses in patients aged over 80 years with osteoporosis; the clinical outcome was better than the radiological image. Three patients developed reflex dystrophy. Mean amplitudes were: flexion 43.6°, extension 52.3°, pronation 63°, supination 70°. The mean wrist force was 52 kpa. No complications related to Norian were observed. Two biopsies were made and showed, in one case at six months, early signs of osteointegration. The product disappeared progressively after 2 years but not in all patients. The immediate postoperative ulnar variance was unchanged at last follow-up. In seven patients the ulnar variance was modified with impaction of the fracture line but with no effect on pronation-supination. Discussion: Metaphyseal comminution after fracture of the distal radius is a classical observation. It may be located posteriorly or anteriorly and leads to secondary impaction before or after pin withdrawal. To avoid this problem, and the inversion of the ulnar variance, the bone defect must be filed at the initial surgical procedure. Solutions include bone grafts (autograft, allograft, xenograft) and injection of methylmethacrylate. Bone substitutes can now be used to fill the gap without the theoretical or real risk of bacterial contamination. The first studies in animal models were published in 1995. Kopylov and Jupiter demonstrated the contribution of Norian for fractures of the lower end of the radius to avoid impaction and improve pronation-supination. Conclusion: Metaphyseal comminution of fractures of the distal radius is a real problem. If the gap is not filled during the initial surgical treatment, impaction with inversion of the ulnar variance can lead to pronation-supination insufficiency. Norian SRS can be used to fill the bone defect producing mechanical results as good as or better than compression cancellous grafts. The produce is resorbed slowly and is easy to use. Its high cost is undoubtedly an inconvenience limiting its use to “young” patients with fractures of the distal radius. After 70 years, the absence of a strong correlation between the radiological and clinical result suggests a less “aggressive” therapeutic approach


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_II | Pages 323 - 323
1 May 2006
Rawlinson H Twaddle B
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To assess the efficacy of percutaneous K wiring in the treatment of distal radius fractures. A retrospective audit was performed of patients with distal radius fractures treated with the combination of manipulation under anaesthetic, K wiring and cast application at Auckland Hospital. Patients were identified by using the Orthopaedic Trauma Database. Charts were reviewed for patient demographics, preoperative delay and complications. X-rays were reviewed recording Frykman Grade and radial tilt, radial inclination and ulnar variance preoperatively, immediately postoperatively and at 6 weeks postoperatively. Seventy five consecutive cases were identified over an 18 month period between May 2002 and October 2003 with 4 excluded because of inadequate notes or x-rays. The majority of patients were female with an average age of 55 years. Most operations were performed by Advanced Trainees using 3 wires with at least one trans styloid wire. 55% of fractures were intra articular. Radial tilt was restored to within 10 degrees of normal in all but 3 patients immediately postoperatively but at 6 weeks 12 patients had more than 10 degrees dorsal tilt. All patients had less than 2mm positive ulnar variance immediately postoperatively but at 6 weeks postoperatively 11 patients had more than 2mm positive ulnar variance. 9 patients (13%) experienced local complications related to the wires. Manipulation under anaesthetic, K wiring and cast application offers a useful treatment option for distal radius fractures which are reducible but unstable. Care is required with patient selection and surgical technique to minimise complications


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_III | Pages 214 - 214
1 Nov 2002
Fujii K Henmi T Kanematsu Y Mishiro T Sakai T Terai T
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Objective: To compare the functional results with the anatomical results of treatment for fractures of the distal end of radius in patients aged over 60 years. Methods: The results of treatment for fractures of the distal end of radius in 25 elderly patients were evaluated retrospectively. The average age of the patients was 70 years and the average follow-up period was 24 months. Twenty-one fractures were treated by percutaneous pinning, two were treated with plates, and two were treated conservatively. All patients were right-handed. The functional results were evaluated according to the sum of demerit points (Saito, 1983), and the following three parameters were used for evaluation of anatomical results: radial tilt, ulnar variance, and palmar tilt. Results: The latest follow-up functional end results were excellent in 52 % of the fractures and good in 48%. In the final radiographs, the average radial tilt was 20.5 degrees, ulnar variance was 3.7 mm, and palmar tilt was 2.5 degrees. The values of ulnar variance and palmar tilt were often found to be out of the normal range. Most of the patients had a satisfactory outcome, and the functional results were not correlated with the magnitude of residual deformities. Grip power was the most significant factor related to subjective evaluation. Grip power recovered 75.2 % of uninjured side grip power in patients fractured left hands and 103.4 per cent in patients fractured right hands. This difference was significant (p< 0.05). Conclusions: A good functional outcome of treatment for fractures of the distal end of radius in elderly patients can be expected irrespective of radiographic evidence of minor deformities


Bone & Joint 360
Vol. 4, Issue 2 | Pages 17 - 20
1 Apr 2015

The April 2015 Wrist & Hand Roundup360 looks at: Non-operative hand fracture management; From the sublime to the ridiculous?; A novel approach to carpal tunnel decompression; Osteoporosis and functional scores in the distal radius; Ulnar variance and force distribution; Tourniquets in carpal tunnel under the spotlight; Scaphoid fractures reclassified; Osteoporosis and distal radial fracture fixation; PROMISing results in the upper limb


Bone & Joint 360
Vol. 3, Issue 4 | Pages 19 - 21
1 Aug 2014

The August 2014 Wrist & Hand Roundup360 looks at: Trapeziectomy superior to arthrodesis;Tamoxifen beneficial in the short term; Semi-occlusive dressing “the bee’s knees” even with exposed bone; “Open” a relative concept in the hand and wrist; Editorial decisions pushing up standards of reporting; Ulnar variance revisited; Traditionalists are traditional; Diabetes not so bad with carpal tunnel


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_15 | Pages 9 - 9
1 Sep 2016
Phillips L Aarvold A Carsen S Alvarez C Uglow M
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To evaluate effectiveness and safety of acute ulnar lengthening osteotomy in Madelung's deformity associated with Hereditary Multiple Exostoses (HME). Seventeen ulnas in 13 patients had acute ulnar lengthening for HME associated forearm deformity. Defined radiographic parameters were compared pre- and post-operatively using student's t-test; ulnar variance, carpal slip, radial bowing, radial articular angle. All complications were noted. Mean follow-up was 27 months (range 1.5 – 72months). An increase in ulna length by a mean of 15.4mm (range 4.5 – 29.3mm) was achieved acutely, corresponding to an increase of 9.3% of total ulnar length. Negative ulnar variance was improved from a pre-operative mean of 12.4mm (range 6.1–16.5mm) to a post-operative mean of 4.6mm (range 0–11.25mm) (p=<0.00001). Carpal slip was significantly improved by a mean of 2.2mm (p=0.02). No significant change in radial bowing (p=0.98) or radial articular angle (p=0.74) was observed. Inter-rater reliability was excellent (r=0.96, Pearson Correlation). Three patients required second procedures for recurrence of deformity at 18 months – 6 years following their primary operation. There were no incidences of compartment syndrome, neurovascular injury nor infection. One ulna fractured intra-operatively requiring a longer plate. One patient had a non union which united on revision surgery. Significant radiographic improvements in forearm and wrist alignment were seen with acute ulnar lengthening. The procedure is safe, with no compartment syndrome nor neurovascular injury and low complications rate. Recurrence rates in the skeletally immature patients are comparable to that reported with gradual lengthening. Acute ulnar lengthening for forearm deformity associated with HME has been demonstrated to be a safe, reproducible and effective surgical procedure


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_IV | Pages 521 - 521
1 Nov 2011
Delattre O Bourges C Mouliade S Marcheix PS Duroux F Stratan L Carmes S
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Purpose of the study: The purpose of this study was to evaluate and compare the functional and radiographic results of these two surgical techniques using a prospective study. Material and methods: This study involved two consecutive series of 70 patients with a posterior fracture of the distal radius. Mixed multiple pinning (MMP) consisted in the combination of two styloid pins and two infrafocal dorsal pins. The anterior plate was a locked ITS. The patients decided when it was appropriate to wear a brace postoperatively. Functional assessment used the range of motion, the Quick DASH score, and a self-evaluation of the number of days the brace was worn. Ulnar variance, sagittal and frontal inclination of the radial epiphysis were measured pre- and postoperatively at 45 days. Results: At mean follow-up of 11.8 months (3–34), the functional outcome was comparable in the two groups but the patients with a plate fixation wore the brace less. Radiographically, there was no loss of final reduction with the plate fixation whereas with the pinning, there was a progressive loss of ulnar variance and less than 2% over-reduction. Major complications (tendon tears, nerve injury) were less frequent with pinning. Conclusion: Globally, plate fixation enabled more rapid mobilisation of the wrist. Nevertheless this method has its drawbacks (duration of the operation, material availability, cost). In our opinion the mixed multiple pinning method is the treatment of choice for fractures free of major instability or anterior or circumferential comminution


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_19 | Pages 23 - 23
1 Apr 2013
Iqbal S Iqbal HJ Hyder N
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Introduction. The distal radius is the most frequently fractured bone in the forearm with an annual fracture incidence in the UK of about 9–37 in 10,000. Restoration of normal anatomy is an important factor that dictates the final functional outcome. A number of operative options are available, including Kirschner wiring, bridging or non-bridging external fixation and open reduction and internal fixation by means of dorsal, radial or volar plates. We designed this study to analyse the clinical and radiological outcome of distal radial fracture fixation using volar plating. Materials/Methods. Thirty-seven patients with distal radius fractures undergoing open reduction and internal fixation using volar plates were included. Tilt of the fractured distal radial fragment was recorded from the initial radiograph and classification of fractures was done using the Orthopaedic Trauma Association system. The QuickDASH questionnaire was used for evaluation of symptomatic and functional outcome six months to one year after surgery. The radiological outcome was assessed using measurements of radial inclination, ulnar variance and volar tilt. Of the thirty-seven patients, 13 were male and 24 were female. The mean age was 55.6 years (range 18–87 years). According to the AO classification, there were 8 cases each of C2 and C3 fractures, 6 cases of C1 fractures and 3 cases each of class A2, A3, B1 and B3 fractures. There were 2 patients with class B2 fracture. Results. Post-operatively, the average restoration of volar tilt was 6.47 degrees (range −12.4 to 20.3 degrees). Mean restoration of radial inclination was 23 degrees (range 12.5 to 30.0 degrees). Ulnar variance on average was 0.09 mm (range −5.0–6.7mm). The mean QuickDASH score was 9.8. Conclusion. The results of this study indicate that fixation of displaced intra- and extra-articular distal radial fractures is achieved satisfactorily with restoration of both normal anatomy and function using volar plates


Orthopaedic Proceedings
Vol. 91-B, Issue SUPP_I | Pages 178 - 178
1 Mar 2009
Kurup H Mandalia V Shaju K Beaumont A
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The aim of this study was to find out whether distal radius fractures treated by K wire fixation loose reduction after wire removal and analyze the variables may influence this. Patients who underwent K wire fixation for unstable fractures of distal radius over a period of 3 years were included in this retrospective study. Fractures were classified according to AO classification. Radiographs taken just prior to removal of K wires and radiographs taken at least 1 month after wire removal were analyzed to study three radiological parameters; Palmar or dorsal tilt, radial inclination and ulnar variance. Loss of these angles was analyzed statistically against variables like age, sex, AO classification, type of K wires used, delay in fixation and duration of fixation. 59 fractures were analyzed with mean age of 56 years and male to female ratio of 1:2. Average loss of radial tilt was 2.6 deg, loss of palmar tilt was 2.6 deg and loss of ulnar variance was 1.3 mm. We found that distal radius fractures treated by percutaneous K wire fixation, do not suffer significant loss of reduction of fracture position after removal of wires. This remains true regardless of age, sex, fracture type according to AO type, type of wires used, delay in fixation or duration of wire fixation