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Biomedical subjects

Y Allieu

Publications and source records attributed to Y Allieu.

At least 163 records · Page 9Linked to original sources
PubMedDate not supplied

[Arthroplasty for scaphotrapeziotrapezoidal arthrosis using a pyrolytic carbon implant. Preliminary results].

INTRODUCTION: The authors propose a scaphotrapeziotrapezoidal (STT) arthroplasty using a discoid pyrocarbon implant. The aim of this prosthesis is to restore the scapho-trapezial mobility without destabilising the carpal bones (unlike with a simple resection of the distal scaphoid pole). METHOD: This technique was used in 15 cases from 1994 to 2002. 12 patients (10 females and 2 males), mean age 65 years) have been reviewed with a mean follow-up of 4 years (1 to 8). Surgical indication was pain refractory to medical treatment (average 8.5 on V.A.S.). Pre-operative mobility showed a loss of radial deviation and dorsal flexion. The severity of the pain did not allow evaluation of the pre-operative strength. Post-operative results were assessed with the EVAL computerised system, static and dynamic X rays were performed in all cases. RESULTS: Pain decreased to an average of 2. The mobility compared to the healthy side showed a slight loss of radial deviation (less than 10 degrees) and in wrist extension (less than 15 degrees). Grip strength was similar to the normal side, even during rapid exchanges. Pinch grip evaluation showed a slight decrease (0.8 kg) which did not compromise normal function of the first ray. No implant luxation was observed in the radiological study. Angular measurements did not show any modification in DISI and other static angles remained unchanged. Dynamic sagital and frontal views confirmed the good mobility of the prosthesis which adjusts its position to the scaphoid movements. CONCLUSION: The good results, the simple surgical procedure, the absence of complications, the lack of a need for any fixation or ligamentoplasty all confirm the advantages of this pyrocarbon implant in the treatment of STT arthrosis. Furthermore, in cases of failure, it is possible to use any other revision procedure.

Aged↗
PubMedDate not supplied

Long-term results of unconstrained Roper-Tuke total elbow arthroplasty in patients with rheumatoid arthritis.

We evaluated the long-term results of 12 unconstrained Roper-Tuke total elbow replacements that were performed in 12 patients with rheumatoid arthritis from 1983 to 1989. The mean follow-up period was 9.5 years (range 8 to 13 years). We used the Ewald elbow-scoring system to chart results. This showed that the scores for the 12 elbows had improved from an average preoperative score of 39 points (range 17 to 72 points) to an average postoperative score of 80 points (range 45 to 97 points). The greatest improvements were in terms of pain relief, function, and range of motion. Eight elbows were free of pain by the end of follow-up. Average elbow flexion increased from 115 degrees before operation to 140 degrees after operation, and pronation and supination increased from 52 degrees to 61 degrees and 42 degrees to 71 degrees, respectively. Radiographs of the 12 elbows showed constant wear of the ulnar polyethylene with loosening of 2 ulnar components. Revision of the prosthesis was necessary in 2 elbows because of aseptic loosening. Complications included 1 subluxation, 1 supracondylar fracture, and 2 ulnar neuropathies. Despite some excellent clinical results with a follow-up of over 10 years, the authors no longer recommend the use of this kind of elbow prosthesis in patients with rheumatoid arthritis because of the high complication rate and the impossibility of adapting this implant in the event of bone loss. The authors propose a new classification of humeral bone loss that will allow for better planning of primary and revision total elbow arthroplasties.

Adult↗
PubMedDate not supplied

Surgical reduction of spondylolisthesis using a posterior approach.

In 26 cases, spondylolisthesis was reduced and stabilized by an intervertebral graft in a new one-step surgical procedure. A critical review of various techniques presently in use illustrates the evolution of the one-stage operation. A most recent modification of the operation is open reduction and internal fixation by a combination of Harrington instrumentation and the posterior intervertebral arthrodesis of Cloward.

Arthrodesis↗
PubMedDate not supplied

Increased prevalence of soft tissue hand lesions in type 1 and type 2 diabetes mellitus: various entities and associated significance.

Sixty Type 1 (insulin dependent) and sixty Type 2 (non insulin dependent) diabetic patients attending a diabetology unit were examined in search of limited joint mobility, Dupuytren's disease, flexor tenosynovitis and carpal tunnel syndrome, in comparison with two populations of 60 non diabetic controls matched for sex and age with the Type 1 and the Type 2 diabetic patients. Microangiopathic and neuropathic complications, glycaemic control, blood pressure and tobacco consumption were simultaneously assessed in 39 of the 60 type 1 and in all the type 2 diabetic patients. The prevalence of the various soft tissue hand lesions was higher in both diabetic populations (respectively Type 1 and Type 2) than in their control populations: Limited joint mobility: 33.3 and 26.7% vs 5.0 and 8.3% (both p < 0.01); Dupuytren's disease: 35.0 and 30.0% vs 6.7 and 10.0% (both p < 0.01); flexor tenosynovitis: 23.3 and 16.7% vs 0.0 and 3.3% (p < 0.01 and p < 0.05); carpal tunnel syndrome: 26.7 and 15.0% vs 3.3 and 5% (p < 0.01 and NS). The prevalence of limited joint mobility in Type 1 diabetes was independently associated with increasing age (p < 0.05) and to lower extent with increasing duration of diabetes (p = 0.05), whereas the prevalence of Dupuytren's disease only correlated with increasing age in both types of diabetes (p < 0.05). In Type 2 diabetes, the prevalence of flexor tenosynovitis also increased independently with age (p < 0.05), and the prevalence of limited joint mobility increased in the opposite way to the body mass index after adjustment on age, duration of diabetes and sex (p < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗