Aims: This is a retrospective study, comparing prosthesis survivorship, complications and functional results in geriatric patients treated with different types of prosthetic replacement for subcapital fractures of the hip. Methods: In the years 1985–1999, 292 elderly (aged 65–80 years) patients with displaced, nonpathologic sub-capital hip fractures were operated on. Of those, 143 were lost to follow-up; therefore, prospectively collected data of 149 patients were retrospectively reviewed. 54 patients received a unipolar, 48 a bipolar prosthesis and 47 underwent a primary total hip arthroplasty (THA). Mean follow-up was 5.3 years. The patients did not differ in pre-injury characteristics. Analysis of variance was used to compare the three patient groups in terms of early and late complications, need for revision surgery, and functional outcome. Results: A statistically signiþ-cant difference was noted, regarding need for revision surgery, since 5 (9.25%) of the unipolar and 5 (10.4%) of the bipolar prostheses had to be re-operated, compared to 2 (4.25%) from the THA group. Of note, 4 of the revised bipolar prostheses had loose stems. The THA group also proved superior, when recovery of instrumental activities was investigated. Conclusions: Elderly patients, whose biologic age poses high functional demands on them, with a displaced subcapital hip fracture, should receive a total hip arthroplasty. Stem loosening seems more likely, as a mode of failure, in bipolar prostheses, than acetabular erosion.

Aims: The purpose of this roentgenographic study is to quantify patellar tilt after total knee arthroplasty and substantiate which factors might affect it. Methods: We reviewed the þles of 446 patients with 485 primary total knee arthroplasties, solely on the diagnosis of degenerative osteoarthritis. Mean follow-up approximated 8.5 (range, 5–20) years. Resurfacing-type prostheses were exclusively used. Patellar resurfacing was accomplished in 51 (11.4%) knees. Patellar tilt was measured pre- and postoperatively using standard Merchant views. Chi-square analysis was used in an attempt to disclose any relationship of patellar tilt with variables like button positioning, lateral release, patellar thickness, limb alignment, joint line elevation, patellar height and posterior cruciate ligament retention or sacriþce. Results: Pre-operatively, 27%, 40% and 33% of patellae demonstrated neutral, lateral and medial tilt respectively. These þgures subsequently changed to 49%, 19% and 32% immediately post-op. However, at þnal follow-up, patellar tilt pattern looked much like the pre-operative one, namely, 31%, 38% and 31% respectively. A statistically signiþcant positive correlation was only documented for patellar thickness, buttonmedialization and pre-operative tilt. The rest of the parameters tested were found not to have any statistical signiþcance with post-operative tilt values. Conclusions: After knee arthroplasty, the patella has, on the long term, a tendency to revert laterally. Lateral release does not seem to ameliorate this tendency. Finally, pre-operative tilt does not correlate to post-operative external mechanism complications.

Between 1988 and 1998, a total of 12 patients (6 men and six women, of average age 36 years) underwent surgery for schwannoma of the peripheral nerves of the upper extremity. The incidence according to the involved nerve was analyzed and the follow-up results and complications after surgical treatment were reviewed. The median nerve was most frequently involved (6 cases), followed by the ulnar nerve (4 cases) and the radial nerve (2 cases). The average duration of symptoms was 2 years (3 months-8 years). Pain or painful paresthesias were usually the main complains. None of the patients suffered from Recklinhausen’s disease. Magnetic resonance imaging is the preferred exploration technique, particularly useful in case of deep tumor. EMG studies were carried out in all patients. Preservation of nerve continuity is the underlying goal of the therapeutic strategy. Marginal excision was performed in all cases. The tumors were extricable displacing the nerve fiber bundles without penetrating into the bundle itself and it was possible thus to be resected without interrupting the nerve continuity. Postoperatively, 7 patients were pain free, while 5 improved. Neurological deficits were favourably influenced by the operation. Out of 4 patients with motor deficits 3 had complete and 1 had partial recovery. Three out of 6 patients with sensory deficits had complete recovery, 2 remained unchanged, while 1 worsened. One patient developed new motor and another one new sensory deficits. New deficits developed predominantly in patients with large tumorsor longstanding symptoms. There was no reccurence or malignant transformation until the average of 52 months of follow-up.

We reviewed the functional outcome of cominnuted intraarticular fractures of the distal humerus managed with internal fixation with plates and screws. 15 patients (10 men-5 women) were reviewed over a mean of 29 months postoperatively. The age of the patients at operation ranged from 18 to 72 years. Patients were treated within 7 days of injury, using a posterior approach,with or without olecranon osteotomy and with anterior transposition of the ulnar nerve. Bone grafting was used in 7 cases in addition to internal fixation. Postoperative mobilisation was prompt in all patients,who were meticously reviewed for : 1)Function of the upper extremity,with the aid of the scale of DASH (Disabilities of the arm,shoulder and hand), 2)Ulnar nerve (pain, sensitive and movement dissability, functionality), 3)Range of elbow motion, 4) strength of the muscles controlling the elbow, wrist and hand. 5)Post-operative radiographic appearance, 6)Subjective evaluation, 7)Complications. All the patients were satisfied with the outcome of the operation,as well as with the activities which could postoperatively be undertaken. The mean range of motion for elbow (flexion-extension) was 118° in average,while muscle strength for elbow motion was moderately reduced. No case of ulnar neuropathy was observed. On the other hand postoperative complications were considerably frequent, yet they were mild and subsided eventually without further operation.