Introduction. Metal-on-metal hip resurfacing (MOMHR) is a good surgical indication for young active patients. However, it cannot be used in patients with an excessively short femoral head/neck. To address these cases, a new surgical technique has been developed comprising femoral head augmentation using impacted morcellized bone grafts. Methods. 32 osteoarthritis patients who had severe congenital insufficiency of the femoral head/neck were treated with MOMHR combined with femoral head augmentation. Mean patient age was 49 ± 9 years (18–66). The required amount of augmentation was calculated on preoperative X-rays and confirmed during surgery. Using specially designed instrumentation, bone chips produced while reaming the socket and trimming the head were impacted onto the head to achieve the desired reconstruction and lengthening. Finally, the femoral component was cemented. Results. Mean head lengthening was 12 ± 2mm. Mean follow-up was 4.2 years (3–6). Mean preoperative Harris hip score was 58, increasing to 95 at follow-up (p<0.05). Mean leg lengthening was 2.2cm (p=0.001). In all Gruen zones, bone mineral density (BMD) decreased during the first 3 months. At 2 years, in zone 1, mean BMD increased to 96.8% (p=0.009) and to 102.1% in zone 7 (p=0.05). A correlation was found between valgus positioning of the femoral components and increased BMD (p=0.005). To date, only 1 patient has been revised due to socket loosening. Discussion and conclusions. This bone grafting technique expands the use of MOMHR to patients with severe deficiencies of the femoral head, thereby leading to a more anatomical reconstruction with a full recovery of function and BMD of the proximal femur

ACL (anterior cruciate ligament) partial tears include various types of lesions, and an high rate of these lesions evolve into complete tears. Most of the techniques described in literature for the surgical treatment of chronic partial ACL tears, don't spare the intact portion of the ligament. Aim of this study was to perform a prospective analysis of the results obtained by augmentation surgery using gracilis and semitendinosus tendons to treat partial sub-acute lesions of the ACL. This technique requires an “over the top” femoral passage, which enables salvage and strengthening of the intact bundle of ACL. The study included 97 patients treated consecutively at our Institute from 1993 to 2004 with a mean injury-surgery interval of 23 weeks (12–39). Patients were followed up by clinical and instrumental assessment criteria at 3 months, 1 year and 5 years after surgery. Clinical assessment was performed with the IKDC form. Subjective and functional parameters were assessed by the Tegner activity scale. Instrumental evaluation was done using the KT-2000 instrument: the 30 pound passive test and the manual maximum displacement test were performed. We obtained good to excellent results in 95.9% of cases. We didn't observed recurrences in ligamentous laxity. We believe that the described technique has the advantage of being little invasive, compatible with the ACL anatomy, and enables very rapid functional recovery and return to sport

Aims

The aim of this study was to evaluate the clinical and radiological outcomes of locking plate fixation, with and without an associated fibular strut allograft, for the treatment of displaced proximal humeral fractures in elderly osteoporotic patients.

The augmentation of fixation with bone cement is increasingly being used in the treatment of severe osteoporotic fractures. We investigated the influence of bone quality on the mechanics of augmentation of plate fixation in a distal femoral fracture model (AO 33 A3 type). Eight osteoporotic and eight non-osteoporotic femoral models were randomly assigned to either an augmented or a non-augmented group. Fixation was performed using a locking compression plate. In the augmented group additionally 1 ml of bone cement was injected into the screw hole before insertion of the screw. Biomechanical testing was performed in axial sinusoidal loading. Augmentation significantly reduced the cut-out distance in the osteoporotic models by about 67% (non-augmented mean 0.30 mm (. sd. 0.08) vs augmented 0.13 mm (. sd. 0.06); p = 0.017). There was no statistical reduction in this distance following augmentation in the non-osteoporotic models (non-augmented mean 0.15 mm (. sd. 0.02) vs augmented 0.15 mm (. sd. 0.07); p = 0.915). In the osteoporotic models, augmentation significantly increased stability (p = 0.017). Cite this article: Bone Joint J 2013;95-B:1406–9

The treatment of massive rotator cuff tears remains controversial. There is lack of studies comparing patient-reported outcomes (PROM) of arthroscopic massive rotator cuff repairs (RCR) against large, medium and small RCRs. Our study aims to report the PROM for arthroscopic massive RCR versus non-massive RCR. Patients undergoing an arthroscopic RCR under a single surgeon over a 5-year period were included. Demographic data were recorded. Pre-operative Quick-DASH and Oxford Shoulder Score (OSS) were prospectively collected pre-operatively and at final review (mean of 18 months post-operatively). The scores were compared to a matched cohort of patients who had large, medium or small RCRs. A post-hoc power analysis confirmed 98% power was achieved. 82 patients were included in the study. 42 (51%) patients underwent massive RCR. The mean age of patients undergoing massive RCR was 59.7 and 55% (n=23) were female. 21% of massive RCRs had biceps augmentation. Quick-DASH improved significantly from a mean of 46.1 pre-operatively to 15.6 at final follow-up for massive RCRs (p<0.001). OSS improved significantly from a mean of 26.9 pre-operatively to 41.4 at final follow up for massive RCRs (p<0.001). There was no significant difference in the final Quick-DASH and OSS scores for massive and non-massive RCRs (p=0.35 and p=0.45 respectively). No revision surgery was required within the minimum one year follow up timescale. Arthroscopic massive rotator cuff repairs have no functional difference to non-massive rotator cuff repairs in the short term follow up period and should be considered in appropriate patient groups

Aims

To report the outcomes of patients with a fracture of the distal tibia who were treated with intramedullary nail versus locking plate in the five years after participating in the Fixation of Distal Tibia fracture (FixDT) trial.

Introduction. Pedicle screw pullout or loosening is increased in the osteoporotic spine. Recent studies showed a significant increase of pullout forces especially for PMMA-augmentation. With application of conventional viscosity PMMA the risk of cement extravasation is associated. This risk can be reduced by using radiofrequency-responsive, ultrahigh viscosity bone cement. Method. 11 fresh-frozen lumbar vertebral bodies (VB) from 5 cadavers were collected and freed from soft-tissue and ligaments. By DEXA scan (Siemens QDR 2000) 8 VB were identified as severely osteoporotic (BMD 0.8 g/cm3), 3 VB were above this level. Two screws (6×45 mm, WSI-Expertise Inject, Peter Brehm, Weisendorf, Germany) were placed in the pedicles. Through the right screw 3ml of radiofrequency-responsive bone cement (StabiliT® ER2 Bone Cement, DFine, Germany) were injected via hydraulic cement delivery system (StabiliT® Vertebral Augmentation System, DFine, Germany). As control group, left pedicle screws remained uncemented. After potting the whole VB in technical PMMA (Technovit 4004, Heraeus Kulzer, Germany) axial pullout test was performed by a material testing device (Zwick-Roell, Zmart-Pro, Ulm, Germany). Results. The mean BMD of all specimen was 0.771 g/cm3 (min./max. 0.615/1.116, SD ± 0.170). Due to the definition of osteoporosis 8 specimens had a BMD lower than 0.8 g/cm3 (mean 0.677, min./max. 0.615/0,730, SD ±0.045). The non-osteoporotic group consisted of 3 specimens with a mean BMD of 1.020 g/cm3 (min/max 0.928/1.116, SD ±0.094). Overall we observed an increase in the mean axial pullout strength of 284% when using cement augmentated screws (non-cemented 385 N vs. cemented 1029 N, p 0,001). In the osteoporotic group the mean pullout force of the non-cemented screws was 407 N vs. 1022 N for the cemented screws (p 0.001). Similarly the pullout force rose in the non-osteoporotic group from 325 N for the non-cemented screws to 1048 N for the cemented screws p 0,001). All surgical procedures could be performed without technical problems. Conclusion. This cadaver study demonstrates the efficacy and effectiveness of pedicle-screw augmentation with ultra-high viscosity cement. Pullout forces are significantly increased, especially in osteoporotic bone. No complications like clogged in cannulated pedicle-screws or extravasation of bone cement were observed. In daily clinical routine radiation exposure to operator during cement delivery is reduced due to remote-controlled, automated delivery of radiofrequency-responsive bone cement. Furthermore availability of longer time to work with the cement (up to 30 min) is achieved; hectically injection or multiple-cement-mixing is not necessary anymore. The WSI-Expertise cannulated pedicle screws can be inserted and also augmented in a minimal-invasive technique. The PMMA then is injected through an extension adapter. PMMA augmentation of pedicle screws is already well established in spine surgery. With the combination of radiofrequency-responsive, ultra-high viscosity bone cement and cannulated pedicle screws this established procedure could become more controlled and safer for both patient and physician

Management of irreparable rotator cuff tears is challenging and controversial. Surgeons have been utilising biological tissue scaffolding to augment repairs, but there are concerns regarding viability and function. We wished to investigate this viability and clinical outcome in a small group of patients. All procedures were performed by a single surgeon over a three-year period. Inclusion criteria were patients with large cuff tears and failure of non-operative treatment. Exclusion criteria were patients with glenohumeral arthritis and where cuff repair could not be successfully performed. Open rotator cuff repair followed by augmentation with Graft Jacket® Regenerative Tissue Matrix (Wright Medical) was performed in all patients. A structured cuff repair physiotherapy protocol was then followed. Follow-up was at six months and at minimum twenty-four months post-operatively where Constant scores (CS) and Oxford Shoulder scores (OSS) were noted and a repeat ultrasound performed. Fourteen patients underwent the procedure. No patient was lost to follow-up. There were seven males and seven females with a mean age of 63 years (range 31–77). At minimum twenty-four month follow-up, thirteen patients had flexion and abduction above 90 degrees and symmetrical external rotation. Mean CS was 81 (range 70–91) and mean OSS was 46 (range 41–48). Shoulder ultrasound revealed an intact Graft Jacket® in all thirteen patients. The final patient had lower functional movement and lower CS (34) and OSS (25) and ultrasound identified a re-rupture. This study indicates that augmentation of large rotator cuff repairs with biological tissue scaffolding is a viable option and has good functional results

Aims

The aim of this study was to describe services available to patients with periprosthetic femoral fracture (PPFF) in England and Wales, with focus on variation between centres and areas for care improvement.

Introduction. Although a previous hip fracture is one of the strongest predictors for the next one this risk might be modified by other factors. The goal of this analysis was to compute a simple algorithm to assess the individual risk for a contralateral hip fracture. Materials and methods. The analysis is based on a nationwide population-based Danish cohort study of 84,360 patients experiencing a hip fracture followed-up for 5 years. We a priori defined a set of 17 candidate parameters potentially associated with early contralateral hip fracture. We bootstrapped a stepwise augmentation procedure 10 times and selected five parameters that entered the model in all bootstrapping cycles and computed the individual risk for a contralateral fracture within two, three, and five years after the first incidence. Results. 12,349 patients (14.6%) experienced a contralateral hip fracture within five years. The strength of association were: female gender (Odds Ratio 1.58), alcohol abuse 1.57, living in a single household 1.10, no prescription of bisphosphonates 1.64, and comorbidity and Charlson Score values less than 2 2.20, between 3 and 4 1.76, 5 and more, 1.46 against no comorbidity. The probability of experiencing a second fracture ranged from 3.4% to 25.9%. Discussion. Once this instrument is validated in other cohorts it provides a rational basis for prophylactic augmentation or more aggressive pharmaceutical treatment

Aims

The purpose of this study was to develop a convolutional neural network (CNN) for fracture detection, classification, and identification of greater tuberosity displacement ≥ 1 cm, neck-shaft angle (NSA) ≤ 100°, shaft translation, and articular fracture involvement, on plain radiographs.

Aims

The aim of this study was to describe the management and associated outcomes of patients sustaining a femoral hip periprosthetic fracture (PPF) in the UK population.

Aims

The aim of this study was to report the outcomes of patients with severe open fractures of the lower limb in the five years after they took part in the Wound management for Open Lower Limb Fracture (WOLLF) trial.

Aims

The incidence of atypical femoral fractures (AFFs) continues to increase. However, there are currently few long-term studies on the complications of AFFs and factors affecting them. Therefore, we attempted to investigate the outcomes, complications, and risk factors for complication through mid-term follow-up of more than three years.

Aims. Dual SC Screw (DSCS) is a novel fixation device for the femoral neck fracture. DSCS is comprised of screw and barrel allowing sliding of the screw and preventing protrusion of the screw end. Two types of the barrels are available, threaded barrel (TB) and plate barrel (PB). Ordinarily, both barrels are implanted. Concept of the design is that the PB contributes stability to the screw against the varus force of the femoral head while the additional screw with TB prevents rotational deformity. The aim of this study was to represent clinical results after DSCS operation in patients with femoral neck fracture. Method. Fifty-one patients with femoral neck fractures treated using DSCS and at least 3 months follow up are included and their clinical was evaluated. Result. Most fractures healed uneventfully. Cut out was occurred in two patients, perforation of the femoral head in one, femoral head necrosis in two, subtrochanteric fracture in one and 1backout of screw in one. The cases except that are excellent postoperative results. Discussion and Conclusion. Most complication was associated with some technical problems and all but one patients without that showed excellent results even for displaced fracture. Furthermore, secondary subtrochanteric fracture was rare compared other devices. The plate augmentation for screw fixation contributes to these excellent results

Traumatic injuries to the sternoclavicular joint (SCJ) are uncommon representing only 3% of all injuries to the shoulder girdle. Acutely, the majority are managed non-operatively with physiotherapy rehabilitation. However, if there is evidence of neurovascular compromise emergency reduction is indicated. There is no consensus on treatment of SCJ dislocations and subluxations that remain symptomatic after conservative treatment. Multiple surgical techniques have been described to alleviate this problem. These include resection of the medial end of the clavicle and various stabilization techniques using Kirschner wires, muscle tendon (subclavius, sternocleidomastoid, semi-tendinosus and palmaris longus) and synthetic materials (Dacron). However, all techniques have reported problems in terms of pain, decreased range of movement and a relatively high complication rate. We report a new technique using a LARS® ligament (Ligament Augmentation and Reconstruction System) with good early post-operative results. 5 symptomatic SCJ dislocations were repaired over a 3 year period. The operations were conducted by the same surgeon and at the same unit. The patients were on average 20 years old (17–22). Mean follow up time was 21 months (9–41). Functional assessment was made using the DASH (Disabilities of the Arm, Shoulder and Hand) and the OSS (Oxford Shoulder Score) outcome measures. An improvement between pre- and post-operative scoring was observed in both DASH median 51.7 (24.2–75.0) v 13.7 (8.3–20.8) (p=0.024) and OSS 20.6 (15–32) v 41.8 (39–47) (p<0.001). One patient had a pneumothorax intra-operatively but this resolved with conservative treatment. There were no long term complications experienced during follow up

The aim is to evaluate the effectiveness of pericardium patch as a tendon augmentation graft in the repair of massive rotator cuff tear. This is prospective study analysis of a consecutive series of 60 patients who underwent open repair of a massive rotator cuff tear with patch between 1999 and 2007. The inclusion criteria were: symptomatic with pain, deficit of elevation, not responsive to the physiotherapy, tear size (massive: 2 or more tendons), minimum follow-up of 2 years since surgery, active and motivated patients. All were assessed preoperatively with plain radiographs (anteroposterior and axillary views), ultrasound and NMR of the shoulder. The study group consistent of 60 patients (39 men and 21 women) with the mean age of was 66 years (range, 46–81). The mean duration of symptoms before repair was 18 months (range 3–48). Patients were assessed with UCLA score, visual analog scale (Vas scale) and ultrasound preoperatively, at 1 year, and at 3 years. The change in UCLA scores, Vas scale were analyzed with the paired Student's test, assuming a normal distribution of the total score. Satisfactory results were achieved in 49 patients: mean preoperative UCLA score improved from 9.3 to 16.9 at final follow-up. For pain, the mean preoperative value of Vas scale was 9,1, postoperative mean value was 4.9. Range of motion and abduction power improved not significantly after surgery, although patients satisfaction levels were high. Imaging studies identified intact patch in 15 patients and patch detachment in 45. No adverse side effects (infection, rejection, allergy) were reported during the study period. The results of our study suggest that patients (appropriately selected) with a massive full-thickness rotator cuff tear can be expected to have a pain relief after repair, but not a significantly improved of functional outcome

This clinical study analyzes the long-term outcomes and potential complications of the Grammont's reverse prosthesis in case of trauma in elderly population. Between January 1993 and May 2010, thirty-seven consecutive patients with 26 three- and four-part fractures and 11 fracture-dislocations, mean age 75 (58 to 92) were evaluated with a mean follow-up of 7.3 years. Eight complications occurred: 2 complex sympathetic dystrophies, 3 dislocations, 2 deep infections and one aseptic loosening of the base-plate leading to 3 re-operations and 2 prosthesis revisions. The mean Constant's score dropped from 55 at two year follow-up to 52 (20 to 84) at last revision because of an augmentation of the pain and a diminution of the strength which represented 67% of the mean score for the injured side. Mean modified Constant's score was 68. Only 58% were satisfied or very satisfied because of poor internal and external rotations avoiding nourishment with utensils, dressing and personal hygiene when the dominant side was involved. Two complete glenoid borders, fourteen stable inferior spurs, twenty-one inferior scapular notches including ten of them with medial proximal humeral bone loss or radio lucent lines between the bone and the cement were observed. Notches were more important in size when the follow-up was longer. 62% of the patients had worrying images. The crossing of the clinical and radiological data showed a degradation of the mean Constant's score (41) for pain and strength in cases of notches with troubling proximal humeral images. In spite of only one case of aseptic loosening at 12 year follow-up, results are disappointing and complications and revisions rates important. The functional result is never equal to the pre-broken state. New developments in design, bearing surfaces and surgical technique and a more long term results will refine the role of the reverse concept for fracture

Introduction. There has been renewed interest in the unicompartmental knee arthroplasty with reports of good long term outcomes. Advantages over a more extensive knee replacement include: preservation of bone stock, retention of both cruciate ligaments, preservation of other compartments and better knee kinematics. However, a number of authors have commented on the problem of osseous defects requiring technically difficult revision surgery. Furthermore, a number of recent national register studies have shown inferior survivorship when compared to total knee arthroplasty. The purpose of this study was to review the cases of our patients who had a revision total knee arthroplasty for failed unicompartmental knee arthroplasty. To determine the reason for failure, describe the technical difficulties during revision surgery and record the clinical outcomes of the revision arthroplasties. Methods. Between 2003 and 2009 our institute performed thirty three revisions of a unicompartmental knee arthroplasty on thirty two patients. The time to revision surgery ranged from 2 months to 159 months with a median of 19 months. Details of the operations and complications were taken form case notes. Patient assessment included range of motion, need for walking aids and the functional status of the affected knee in the form of the Oxford knee score questionnaire. Results. The reasons for failure were aseptic loosening of tibial component, persistent pain, dislocated meniscus, mal-alignment and osteoarthritis in another compartment. Of the 33 revision knee arthroplasties 18 required additional intra-operative constructs. 11 knees required a long tibial stem while 1 required a long femoral stem. 10 knees required medial wedge augmentation and bone graft was used in 6. Mean 1 year Oxford knee scores for failed unicompartmental knee replacements was 29 compared to 39 for primary total knee replacements performed at the same institute. Of the revision knee replacements 2 required further revision due to infection and loosening. Conclusion. From the evidence of our group of failed unicompartmental knee replacements, revision surgery is technically difficult and often requires intra-operative constructs. Clinical outcome of revision total knee arthroplasty following failed unicompartmental knee arthroplasty is not comparable to primary total knee arthroplasty

Background. Radiofrequency Kyphoplasty (RFK) provides a new minimally invasive procedure to treat vertebral compression fractures (VCF). Purpose. The purpose of this study was to investigate the functional outcomes, safety and radiographic outcomes after the treatment of painful osteolytic vertebral fractures treated with a novel minimally invasive procedure, RFK. Material and Methods. 88 patients (50 females and 38 males) with 158 osteolytic vertebral fractures were treated with RFK using the StabiliT Vertebral Augmentation System (Dfine Inc, San Jose, CA). The StabiliT System provides a navigational osteotome to create a site and size specific cavity prior to delivering ultrahigh viscosity cement with an extended working time (done by applying radiofrequency energy to the cement immediately prior to entering the patient). 12 months follow up in 60 patients (36 females and 24 males) with 110 treated vertebrae are reported. Pre- and postoperative, 3, 6 and 12 months clinical parameters (Visual Analogue Scale, Oswestry Disability Index score), and radiological parameters (vertebral height and kyphotic angle) were measured. Results. The median pain scores (VAS) (p<0.001) and the Oswestry Disability Score (p<0.001) improved significantly from pre- to post-treatment and maintained at 3, 6 and 12 months follow up. Postoperative, 3,6 and 12 months follow-up RFK restored and stabilized the vertebral height and avoided further kyphotic deformity. No symptomatic cement leaks or serious adverse events were seen in the RFK group during 3-months of follow up. In 7 out of 158 vertebrae (4.4%) a cement leakage into the disc or lateral wall could be determined by radiograph postoperatively. Conclusion. Radiofrequency Kyphoplasty is a very safe and effective minimally invasive procedure for the treatment of osteolytic vertebral fractures. Radiofrequency Kyphoplasty shows excellent clinical and radiological results in the 3 and 6 months follow up. Site specific cavity creation and delivery of ultra-high viscosity cement in RF Kyphoplasty with extended working time resulted in the added benefits of height restoration and lower cement leakages intra-operatively