Objectives. Juxtafacet cysts of the spine can cause radicular pain, neurological symptoms and are often associated with spinal degeneration. The mainstay of treatment of juxtafacet cysts is surgical resection with laminotomy and resection of the cyst. Other methods, including epidural steroid and facet injections are mostly temporarily effective. The aim of this study is the sufficient decompression with reduced traumatization and destabilization with the full-endoscopic interlaminar and transforaminal technique. Methods. 60 patients with unilateral, single-level juxtafacet cysts were included in this study. 30 Patients (group 1) were operated in full-endoscopic technique (22 interlaminar, 8 trans-/extraforaminal) and 30 Patients (group 2) with conventional microscopic-assisted technique. The full-endoscopic operation was performed with 6.9-mm endoscopes with 4.1-mm intra-endoscopic working canal. The follow-up was 18 months. 27 (91%) patients were followed. Additionally to general parameters validated scores were used. Results. No intraoperative complications occurred. 2 patient in group 1 and 4 patients in group 2 showed transient dysaesthesia. The mean operation time in group 1 was 32 minutes, in group 2 56 minutes. There was no measurable blood loss in group 1, and a mean blood loss of 85 ml in group 2. The follow-up showed satisfactory subjective results in 53 patients. There were no significant differences between the two groups or within group 1 between the transforaminal and interlaminar technique in the clinical results. Group 1 showed significant advantages in different clinical, technical and economical parameters. The maximum time in hospital for group 1 patients was 3 days and 6 days in group 2. No recurrence of the cyst was found in the follow up. Conclusion. The full-endoscopic operation of lumbar facet cysts with full-endoscopic technique is an alternative to the conventional microscopic-assisted procedure for sufficient decompression of juxtafacet cyst. It enables selective procedure with direct visualization, sufficient decompression and less traumatization of the access pathway and the spinal canal structures

Digital Mucous Cysts (DMCs) arise from the distal inter-phalangeal joints of the digits. They often rupture spontaneously and nail deformities are common. Although surgical excision is recognised as the most successful treatment, there is no clear consensus as to the most appropriate operative technique. We performed a retrospective review identifying all patients who underwent excision of a DMC using a local rotation skin flap by the senior author over a ten-year period. Patients were all seen pre-operatively and at a minimum of six months post-operatively. Sixty-nine patients were included in the study and were reviewed at an average of 37.7 months post-operatively. No patients were lost to follow-up. There was only one cyst recurrence (1.4%). Sixty-seven (97.1%) patients were happy with the scar and sixty-three patients (91.3%) said they would have the procedure performed again. Sixty-six patients (95.7%) were content with their post-operative range of movement, which was on average 8.1° less than pre-operative values. Thirty-six patients had a nail deformity pre-operatively and twenty-one reported that the deformity grew out following the procedure. Only one patient (3.0%) developed a new deformity post-operatively. Five patients reported infection post-operatively with four prescribed oral antibiotics, but all resolved following one week of treatment. This study, which is one of the largest analyses of an operative treatment for DMCs, demonstrates that cyst excision with a local rotation skin flap is a safe and effective technique with a low recurrence rate and a high patient satisfaction

Introduction. An aneurysmatic bone cyst (ABC) is a benign cystic lesion of bone composed of blood-filled spaces separated by connective septa. The most common treatment is curettage with or without bone grafting. Curettage with bone grafting and Ethibloc injection therapy have a comparable recurrence rate. Ethibloc is a radiopaque alcohol solution of corn protein which is percutaneously injected in the ABC. Objective. To compare percutaneous Ethibloc injection (ETHI) with curettage with bone grafting (CUBG) in the treatment of ABC. Methods. We conducted a retrospective cohort study of 73 treatments on 56 patients with ABC, between 1985 and 2007. The number of treatments were divided in two groups, one consisting of treatments with ETHI (n=35) and the other of treatments with CUBG (n=38). Both groups are comparable for the number of primary lesions; ETHI (n=17) and CUBG (n=21) or recurrences; ETHI (n=18) and CUBG (n=17). Radiological and clinical outcomes were assessed pre- and post-operatively. We evaluated the outcome measures of ETHI and of CUBG during a mean of 24.7 (range: 2–48) months. We evaluated the recurrence rate in both groups for a maximum period of 4 years to prevent the influence of outliers. Recurrence was defined as a radiological progression/recurrence of the lesion or progression/persistence of symptoms (pain, tumor, function impairment). Statistical analysis included a Kaplan Meier survival analysis, a cox-regression analysis to account for potential confounders and a chi-square test. Results. A survival analysis showed no difference in recurrence rate between both groups. A cox regression analysis showed that type of treatment, after correcting for size of tumor, location and previous treatment, had no influence on recurrence rate. There was no significant difference in clinical outcome in both groups; complete relief of all symptoms was found after ETHI and CUBG n=30 (86%) and n=33 (87%) respectively. Radiologically, 24 (69%) of the treatments with ETHI were effective (no recurrence) in 24 months (range: 3–48) and 28 (74%) of the treatments with CUBG in 23 months (range: 2–48). There was no significant difference between the ETHI vs. CUBG in the number of effective treatments in both primarily treated ABC's (10 vs. 15, p=0.3) as in ABC's with previous treatments (14 vs. 13, p=0.6). Complications after ETHI consisted of 2 fistulas and after CUBG of an AVN and failure of reconstruction. Discussion. This study shows that the relatively simple, percutaneous Ethibloc injection is comparable to curettage with bone grafting, regarding both clinical and radiological outcome. Recurrence rate was not influenced by type of treatment, location or size of tumour. We recommend Ethibloc injection as the first-choice treatment of primary and recurrent ABC's

Background. Pseudotumours have been associated with metal-on-metal (MoM) hip replacements. We define it as a solid mass which may have cystic components that is neither neoplastic nor infectious in aetiology. The cause of a pseudotumour is not fully understood but could be due to excessive wear, metal hypersensitivity or due to an as-yet unknown cause. Aim. We present the retrieval analysis of early failure MoM hips revised for pain, loosening or a symptomatic mass. Tissues and implants were examined for the possible causes of failure and pseudotumour formation. Corrosion as a potential new cause for pseudotumour formation will be presented. Methods. A group of 16 MoM hip replacements were collected for retrieval analysis. Six of which had a pseudotumour. An Artificial Hip Profiler (Redlux Ltd) was used to measure wear. Edge loading was determined using the 3D wear data. Tissues were histologically evaluated using a 10-point ALVAL scoring system, which strongly suggests hypersensitivity (1). Cases were assigned to one of three categories: high wear (rates >5m/yr), hypersensitivity or corrosion. Results. Of the 6 pseudotumours, 3 had edge loading, 2 had high ALVAL scores and one had corrosion at the head taper junction. The high wear group, (3 cases) all demonstrated edge loading. Histology revealed more metal wear particles and macrophages, with a low ALVAL score in these cases. Two cases were found to have hypersensitivity with a high ALVAL score, more lymphocytes with less visible wear debris and macrophages. The wear rates were also lower, <4m/yr. One total hip replacement had corrosion at the junction between the head and adaptor taper for the stem. The bearings had low wear and the tissue had extensive necrosis as well as products of corrosion enclosed in fibrin (2). There was no suggestion of hypersensitivity (low ALVAL score). Conclusion. Pseudotumours can be caused by high wear, but if this is ruled out, a hypersensitivity or corrosion product reaction should be considered

In a randomized study of 60 patients allergic reactions are evaluated in three joint prosthesis groups, a resurfacing arthroplasty (ReCap), a non-cemented, large metal-on-metal head (Bimetric Magnum) and a non-cemented, alumina ceramic-on-ceramic bearing in a titanium shell (Bimetric C2a). The inclusion criteria were osteoarthritis, ASA I–II, MRI-scan without caput necrosis, DXA-scan without osteoporosis. The exclusion criteria were short neck (<2cm.), large cysts (>1cm.), medical treatment affecting the bone metabolism, severe deformity of the femoral head, impaired kidney function and inability to co-operate. Blood samples were drawn prior to and 6 weeks, 6 months, 1 year, and 3 years after surgery; two tubes from which plasma was prepared, and two tubes for serum. From the last included 20 patients in each group was also taken blood one and three years after surgery for an in vitro lymphocyte assay for scoring of possible hypersensitivity to prosthesis metals. The isolated lymphocytes were subjected to measurement of proliferation and expression of CD69 by flow cytometry and measurement of the Migration Inhibitory Factor (MIF) by ELISA. Plasma concentrations of the cytokines IL-1, IL-4, IL-6, IL-8, IL-12p70, IL-15, interferon-and osteoprotegerin were determined by multiplex-immunoassay. Serum concentrations of chromium and cobalt were determined by graphite furnace atomic absorption spectrometry. The serum concentrations of chromium and cobalt were lowest in patients with the C2a implant and highest with Magnum, some of these differences were significant at 6 weeks, 6 months, and 1 year after surgery. No patient had a very high serum metal concentration. The values of the variables measured in the in vitro lymphocyte assay mainly changed in the expected direction depending on the concentration of the same metal in the serum sample drawn at the same time, but no significant correlation was seen. One patient had uncertain symptoms of metal hypersensitivity and relatively high serum metal concentrations 3 years after arthroplasty with a Magnum prosthesis and was assessed extraordinarily, and elicited the marginally highest MIF responses in the lymphocyte assay. A strong correlation was found between the plasma concentrations of most cytokines, but the cytokine concentrations were not correlated to contemporary metal concentrations

The purpose of this study was to validate the usefulness of SPECT/CT as an evaluation method for determining treatment and prognosis for patellofemoral cartilage lesions, based on MRI and arthroscopic findings. From August 2009 to February 2010, SPECT/CT was performed on 80 patients (24 male and 56 female, average 53.3 years old) with chronic anterior knee pain who had no degenerative changes or patellar malalignment on plain radiographs. Radioisotope uptake findings on patellofemoral joint from SPECT/CT were classified into three grades by one nuclear medicine specialist. In the patients who demonstrated poor improvements after conservative treatments, MRI and arthroscopy were performed. Patellofemoral cartilage conditions under arthroscopic finding (ICRS grades) were compared with SPECT/CT grading. In all cases, there were increased uptakes on patellofemoral joints. Eighteen cases showed low uptake (Group 1), 22 cases showed medium uptake (Group 2) and 40 cases high uptake (Group 3). At the follow-up examination after mean 1.7 months, 16 cases of Group 1 (89%), 14 cases of Group 2 (64%) and 28 cases of Groups3 (70%) responded positively to the conservative treatments. For those 22 cases showing poor improvement, MRI and arthroscopy were done. Damage or thinning of patellofemoral cartilage, subchondral cyst, edema and fissuring were observed in every case that underwent MRI. Every arthroscopic case was found that there was patellofemoral cartilage damage. Each of ICRS grade I and grade II was found in 2 cases from Group 1. Two cases of grade II, 4 cases of grade III, and 2 cases of grade IV were found in Group 2. Two cases of grade II, 4 cases of grade III, and 6 cases of grade IV were found in Group 3. There was significant difference in the success rate of conservative treatment between SPECT/CT grade 1 and 2 or 3. And there was significant association between SPECT/CT grade and ICRS grade (P=0.034). SPECT/CT could be a useful modality in determining the treatment and prognosis for patellofemoral cartilage lesions compared with MRI and arthroscopic findings

Objective. Comparison of clinical outcome after Percutaneous Vertebro Plasty (PVP) for Osteoporotic Vertebral Compression Fractures (OVCFs) between patients with and without Intra Vertebral Clefts (IVCs). Background. PVP is a common treatment modality for painful OVCFs. Patients presenting with OVCFs with an IVC, also described as avascular necrosis of the vertebral body or intravertebral pseuadoarthrosis, are thought to represent a specific subgroup: filling the cleft might result in immediate and possibly superior pain relief due to stabilization of the excessive mobility associated with an IVC and the risk for cement leakage might be decreased due to its cavitational nature. Methods. 102 patients with 197 OVCFs were prospectively recruited for follow-up using a 0–10 Pain Intensity Numerical Rating Scale (PI-NRS) and the Short Form 36 (SF-36) Quality of Life questionnaire before PVP and at 7 days (PI-NRS only), 1, 3 and 12 months after PVP. Cement leakage was assessed on direct post-operative CT-scanning. At 6 and 52 weeks and at suspicion, patients were analyzed for new fractures. From blinded data two experienced musculoskeletal interventional radiologists retrospectively assessed all treated OVCFs for the presence of an IVC, defined as an abnormal, well-demarcated, linear or cystic hypointensity on MRI T1-weighted sequences and/or hyperintensity on MRI T2 STIR-sequences and/or the evident cleft filling on post-PVP CT-scanning. Outcome of patients with and without IVCs was compared using multivariate analysis correcting for confounders. For the purpose of comparison, a subgroup of all patients with PVP in isolated OVCFs was assessed as well. Results. In 48 OVCFs in 48 of 102 patients an IVC was identified (47.1%). Outcome regarding PI-NRS and SF-36 was comparable between both groups. In 42 patients who received PVP in only one OVCF, 21 clefts were detected. Despite similar baseline values, average back pain after PVP was significantly higher over time in patients with an IVC (1.1 point, p=0.03) but ultimately comparably lower at 12 months (4.4 and 4.3 points, p < 0.001). Outcome regarding SF-36 was comparable, as was occurrence of new OVCFs after PVP. The presence of an IVC was identified as a strong risk factor (OR 4.3, p=0.004) for occurrence of cortical (intradiscal) cement leakage. Conclusion. In patients with long-standing OVCFs, an IVC is a common entity. Patients with OVCFs with an IVC benefit from PVP, but do not comprehend a superior treatment indication. Overall benefit from PVP was comparable to patients without an IVC. In patients with treated isolated OVCFs with an IVC, average back pain is higher over the first year after PVP but ultimately comparable. Furthermore, an IVC is associated with an increased risk for cortical (intradiscal) cement leakage

Introduction. Acetabular labral pathology is now recognized as a more common injury than previously thought. With cost constraints of MRI and invasiveness of MRI arthrogram, physical examination remains essential for diagnosis. Most tests for labral pathology are currently done in the supine position. We have developed the “twist test,” which is done with the patient standing and can evaluate the patient in functional, weight bearing position. The purpose of this study is to describe the twist test and compare its reliability to MRI arthrogram. Material and methods. Between June 2009 and August 2010, the twist test was performed on all patients presenting to our clinic with complaint of hip pain. 371 patients had the twist test performed. Of these, 247 had an MRI arthrogram (MRA) of the affected hip. The twist test results were compared with MRA findings. A labral tear, degeneration, fraying and paralabral cyst were considered as a positive MRA. The twist test is done with the patient facing the examiner, toes pointing forward. The patient bends their knees to 30 degrees and performs a windshield wiper like action with maximal excursion to the left and right. If the patient tolerates this, then the patient first gets on the unaffected leg, again with the knee bent at 30 degrees, and “does the twist” one-legged, with the examiner holding their hands gently for balance. The test is then repeated on the affected hip. A positive test is groin pain on the affected hip, apprehension with performing the test on the affected hip, or gross range of motion deficits on the affected hip compared with the unaffected side. Results. Among 160 patients with positive twist test, 154 patients had positive MRA and 6 had negative MRA. Among 87 patients with negative twist test, 72 had positive MRA and 15 had negative MRA. In comparison with MRA, the sensitivity and specificity of twist test for labral injury were 68.14% and 71.5% respectively. Positive predictive value (precision) of twist test for diagnosis of labral lesion was 96.25% and the accuracy was 68.4%. Conclusions. Physical examination tests for hip pathology are an important screening tool. Current tests include the McCarthy test and the impingement test. We introduce a new test for hip labral pathology, which is done standing. In our study, the twist test had a high positive predictive value (96.25%), so this test can be beneficial for ruling out labral pathology. An added benefit is that this test is quick to perform, so it could be incorporated into a general sports physical screening examination

Purpose. To analyse the early results of unconstrained pyrocarbon joint replacements in patients with osteo-arthritis of the metacarpo-phalangeal joints. Background. Silicone arthroplasty, as introduced by Swanson in 1962 has remained the most popular procedure to treat arthritis of the metacarpo-phalangeal (MCP) joints. However, despite providing good pain relief, they have shown to demonstrate breakage rates up to 82% at 5 years. This is of great concern in the osteoarthritis (OA) patient group, who tend to be younger and have higher functional demands compared to their rheumatoid counterparts. The newer unconstrained pyrolytic carbon MCP joint prostheses may therefore be more suitable in OA patients whose soft tissue constraints are intact and whose hand function is strong. This study is the first to analyse the results of this implant in a cohort of OA patients only, with prospective data. Methods. 19 primary pyrocarbon metacarpo-phalangeal joint replacements, in 11 patients (5 men and 6 women) were reviewed, with prospective data collection. The diagnosis was primary osteoarthritis in all patients. The mean age at operation was 66.4 years (range 55–82 years). 2 patients underwent concomitant trapiezectomy and one underwent DIPJ fusion. All patients were right hand dominant −75% underwent surgery in their dominant hand. Eleven of the nineteen joints were performed in the index finger, with the remainder in the middle finger. Mean follow up is 22.1 months (range 11–37). Results. At the 3 month post-operative hand therapy assessment, the arc of motion had improved from a mean of 32 degrees to 45 degrees and flexion had improved from a mean of 51 degrees to 66 degrees. Grip strength improved from a mean 20 to 27Kg. DASH scores significantly improved from a mean of 40 to 10 (p=0.01). All patients were satisfied with their outcomes and would have the surgery again. Pre-operative radiographs demonstrated joint narrowing in all patients but no evidence of heterotopic ossification, cystic change or erosions. Post-operatively, there has been no radiographic evidence of joint dislocation, resorption stress-shielding, loosening, migration or heterotopic ossification. There were three intra-operative complications of phalangeal fractures that were immediately treated with a cerclage wire. In one patient there has been a fracture of the proximal phalangeal implant at 14 months which was asymptomatic. One patient has required revision for mal-rotation of the implant leading to loss of index finger supination. Conclusion. Our results demonstrate excellent early results of pyrocarbon MCP joint arthroplasty in OA patients

Introduction. Osteochondral defects (OCDs) of the talus are treated initially by arthroscopic bone marrow stimulation. For both large and secondary defects, current alternative treatment methods have disadvantages such as donor site morbidity or two-stage surgery. Demineralized bone matrix (DBM) was published for the treatment of OCDs of rabbit knees. Autologous platelet-rich plasma (PRP) may improve the treatment effect of DBM. We previously developed a goat model to investigate new treatment methods for OCDs of the talus. The aim of the current study was to test whether DBM leads to more bone regeneration than control OCDs, and whether PRP improves the effectiveness of DBM. Methods. A standardized 6-mm OCD was created in 32 ankles of 16 adult Dutch milk goats. According to a randomized schedule, 8 goats were treated with commercially available DBM (Bonus DBM, Biomet BV, Dordrecht, the Netherlands) hydrated with normal saline, and 8 were treated with the same DBM but hydrated with autologous PRP (DBM+PRP). The contralateral ankles (left or right) were left untreated and served as a control. The goats were sacrificed after 24 weeks and the tali were excised. The articular talar surfaces were assessed macroscopically using the international cartilage repair society (ICRS) cartilage repair assessment, with a maximum score of 12. Histologic analysis was performed using 5-μm sections, and histomorphometric parameters (bone% and osteoid%) were quantified on representative areas of the surface, center, and peripheral areas of the OCDs. Furthermore, μCT-scans of the excised tali were obtained, quantifying the bone volume fraction, trabecular number, trabecular thickness, and trabecular spacing in both the complete OCDs and the central 3-mm cylinders. Results. All goats recovered well and were able to bear full weight within 24 hours after surgery. The mean ICRS-score of the ankles treated with DBM was 8.0 ± 1.0, compared to a score of 8.4 ± 1.5 in the contralateral ankle (NS); those treated with DBM+PRP scored 6.9 ± 2.4, compared to 7.4 ± 2.0 in the contralateral ankle (NS). Histologic analysis showed four different patterns of healing, distributed evenly over the treatment and control groups: type 1 (n = 4), almost completely healed; type 2 (n = 11), restoration of the subchondral bone with a cystic lesion underneath; type 3 (n = 14), superficial defect with regeneration from the margins and bottom; type 4 (n = 3), no healing tendency. Histomorphometry and μCT revealed no statistically significant difference between treatment (DBM or DBM+PRP) and contralateral control or between both treatment groups in any of the parameters investigated. Conclusion. No treatment effect of DBM was found compared to control defects, and the addition of PRP was not beneficial

Objectives

The aim of this systematic literature review was to assess the clinical level of evidence of commercially available demineralised bone matrix (DBM) products for their use in trauma and orthopaedic related surgery.

Aims

Demineralised bone matrix (DBM) is rarely used for the local delivery of prophylactic antibiotics. Our aim, in this study, was to show that a graft with a bioactive glass and DBM combination, which is currently available for clinical use, can be loaded with tobramycin and release levels of antibiotic greater than the minimum inhibitory concentration for Staphylococcus aureus without interfering with the bone healing properties of the graft, thus protecting the graft and surrounding tissues from infection.

We reviewed 59 bone graft substitutes marketed by 17 companies currently available for implantation in the United Kingdom, with the aim of assessing the peer-reviewed literature to facilitate informed decision-making regarding their use in clinical practice. After critical analysis of the literature, only 22 products (37%) had any clinical data. Norian SRS (Synthes), Vitoss (Orthovita), Cortoss (Orthovita) and Alpha-BSM (Etex) had Level I evidence. We question the need for so many different products, especially with limited published clinical evidence for their efficacy, and conclude that there is a considerable need for further prospective randomised trials to facilitate informed decision-making with regard to the use of current and future bone graft substitutes in clinical practice.

Cite this article: Bone Joint J 2013;95-B:583–97.

A total of 20 patients with a depressed fracture of the lateral tibial plateau (Schatzker II or III) who would undergo open reduction and internal fixation were randomised to have the metaphyseal void in the bone filled with either porous titanium granules or autograft bone. Radiographs were undertaken within one week, after six weeks, three months, six months, and after 12 months.

The primary outcome measure was recurrent depression of the joint surface: a secondary outcome was the duration of surgery.

The risk of recurrent depression of the joint surface was lower (p < 0.001) and the operating time less (p < 0.002) when titanium granules were used.

The indication is that it is therefore beneficial to use porous titanium granules than autograft bone to fill the void created by reducing a depressed fracture of the lateral tibial plateau. There is no donor site morbidity, the operating time is shorter and the risk of recurrent depression of the articular surface is less.

Cite this article: Bone Joint J 2015; 97-B:836–41

This is a retrospective study of six children with ununited scaphoid fractures treated conservatively. Their mean age was 12.8 years (9.7 to 16.3). Five had no early treatment. Radiological signs of nonunion were found at a mean of 4.6 months (3 to 7) after injury. Treatment consisted of cast immobilisation until clinical and radiological union. The mean clinical and radiological follow-up was for 67 months (17 to 90). We assessed the symptoms, the range of movement of the wrist and the grip strength to calculate the Modified Mayo Wrist score.

The fracture united in all patients after a mean period of immobilisation of 5.3 months (3 to 7). Five patients were pain free; one had mild pain. All returned to regular activities, and had a range of movement and grip strength within 25% of normal, resulting in an excellent Modified Mayo Wrist score.

Prolonged treatment with cast immobilisation resulted in union of the fracture and an excellent Modified Wrist Score in all patients.

Fractures of the distal radius occurring in young adults are treated increasingly by open surgical techniques, partly because of concern that failure to restore the alignment of the fracture accurately may cause symptomatic post-traumatic osteoarthritis in future years. We reviewed 106 adults who had sustained a fracture of the distal radius between 1960 and 1968 and who were below the age of 40 years at the time of injury. We carried out a clinical and radiological assessment at a mean follow-up of 38 years (33 to 42).

No patient had required a salvage procedure. While there was radiological evidence of post-traumatic osteoarthritis after an intra-articular fracture in 68% of patients (27 of 40), the disabilities of the arm, shoulder and hand (DASH) scores were not different from population norms, and function, as assessed by the Patient Evaluation Measure, was impaired by less than 10%. Ordinal logistic regression analysis showed a significant relationship between narrowing of the joint space and extra-articular malunion (dorsal angulation and radial shortening) as well as intra-articular injury. Multivariate analysis revealed that grip strength had fallen to 89% of that of the uninjured side in the presence of dorsal malunion, but no measure of extra-articular malunion was significantly related to either the Patient Evaluation Measure or DASH scores.

While anatomical reduction is the principal aim of treatment, imperfect reduction of these fractures may not result in symptomatic arthritis in the long term, and this should be considered when counselling patients on the risks and benefits of the many treatment options available.

A total of 14 women and seven men with a mean age of 43 years (18 to 68) who sustained a Mason type IV fracture of the elbow, without an additional type II or III coronoid fracture, were evaluated after a mean of 21 years (14 to 46). Primary treatment included closed elbow reduction followed by immobilisation in a plaster in all cases, with an additional excision of the radial head in 11, partial resection in two and suturing of the annular ligament in two. Delayed radial head excision was performed in two patients and an ulnar nerve transposition in one. The uninjured elbows served as controls. Nine patients had no symptoms, 11 reported slight impairment, and one severe impairment of the elbow. Elbow flexion was impaired by a mean of 3° (sd 4) and extension by a mean of 9° (sd 4) (p < 0.01). None experienced chronic elbow instability or recurrent dislocation. There were more degenerative changes in the formerly injured elbows, but none had developed a reduction in joint space.

We conclude that most patients with a Mason type IV fracture of the elbow report a good long-term outcome.

We have reviewed 20 women and three men aged 22 to 73 years, who had sustained a Mason type-IIb fracture of the neck of the radius 14 to 25 years earlier. There were 19 patients with displacement of the fractures of 2 mm to 4 mm, of whom 13 had been subjected to early mobilisation and six had been treated in plaster for one to four weeks. Of four patients with displacement of 4 mm to 8 mm, three had undergone excision and one an open reduction of the head of radius. A total of 21 patients had no subjective complaints at follow-up, but two had slight impairment and occasional elbow pain. The mean range of movement and strength of the elbow were not impaired. The elbows had a higher prevalence of degenerative changes than the opposite side, but no greater reduction of joint space.

Mason type-IIb fractures have an excellent long-term outcome if operation is undertaken when the displacement of the fracture exceeds 4 mm.

In a randomised trial involving 598 patients with 600 trochanteric fractures of the hip, the fractures were treated with either a sliding hip screw (n = 300) or a Targon PF intramedullary nail (n = 300). The mean age of the patients was 82 years (26 to 104). All surviving patients were reviewed at one year with functional outcome assessed by a research nurse blinded to the treatment used. The intramedullary nail was found to have a slightly increased mean operative time (46 minutes (sd 12.3) versus 49 minutes (sd 12.7), p < 0.001) and an increased mean radiological screening time (0.3 minutes (sd 0.2) versus 0.5 minutes (sd 0.3), p <  0.001). Operative difficulties were more common with the intramedullary nail. There was no statistically significant difference between implants for wound healing complications (p = 1), or need for post-operative blood transfusion (p = 1), and medical complications were similarly distributed in both groups. There was a tendency to fewer revisions of fixation or conversion to an arthroplasty in the nail group, although the difference was not statistically significant (nine versus three cases, p = 0.14). The extent of shortening, loss of hip flexion, mortality and degree of residual pain were similar in both groups. The recovery of mobility was superior for those treated with the intramedullary nails (p = 0.01 at one year from injury).

In summary, both implants produced comparable results but there was a tendency to better return of mobility for those treated with the intramedullary nail.

Objectives

To investigate the differences of open reduction and internal fixation (ORIF) of complex AO Type C distal radius fractures between two different models of a single implant type.