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M Siguier

Publications and source records attributed to M Siguier.

10 recordsLinked to original sources
PubMed2001

Partial resurfacing arthroplasty of the femoral head in avascular necrosis. Methods, indications, and results.

The current study reports results using a partial surface replacement for osteonecrosis of the femoral head. The surgical technique, implant design, and instrumentation cause minor soft tissue disruption and require little bony resection. Thirty-seven prostheses were placed in 33 patients during the past 7 years. The mean age of the patients was 43 years (range, 24-59 years), and the preoperative Ficat classification was Stage III in 26 hips, Stage IV in 10, and Stage II in one hip. For the surviving prostheses, the mean followup was 49 months (range, 24-89 months). Of the 28 surviving implants, 24 continue to function well and the patients have excellent or good hip scores according to the Merle d'Aubigne system. There were nine failures, mainly attributable to the extension of the osteonecrosis. In comparison with alternative techniques, the operative surgery for partial surface replacement is straightforward, requiring little preoperative planning and immediate weightbearing postoperatively. Should failure occur, little bone stock loss is incurred and revision to a total hip replacement is as simple as primary hip arthroplasty.

Adult↗
PubMed2001

[Original valgus tibial osteotomy by internal opening and without loss of bone contact. Technique and incidence of consolidation speed: a preliminary series of 33 cases].

PURPOSE OF THE STUDY: We propose an original open wedge medial osteotomy of the upper tibia. This new technique, unlike conventional open wedge osteotomies, allows a large bone contact surface without requiring graft filling. MATERIAL AND METHOD: The new technique is based on two anterior and posterior hemi-osteotomies instead of the single osteotomy with the classical technique. The two hemi-osteotomies join laterally but start medially at very different heights on the tibia. The two hemi-osteotomies open a wedge but nevertheless lead to a very large bone contact due to the slippage in a frontal connecting frontal osteotomy. The technique uses a cutting guide to allow perfect orientation meeting the requirements of the operative plan. We studied prospectively the first 33 patients who underwent this new procedure in two centers (Jouvenet Clinic and Tenon Hospital, Paris). We report here the effect on healing time. RESULTS: There was one failure (retarded healing and partial loss of correction) due to incomprehension of the postoperative instructions. The other 32 cases consolidated in 45 days. No graft filling was needed.

Adult↗
PubMed1999

Preliminary results of partial surface replacement of the femoral head in osteonecrosis.

We report our initial results using a partial surface replacement for osteonecrosis of the femoral head. We believe the prosthesis has the most minimalist design that has been reported either in Europe or North America. The surgical technique, implant design, and instrumentation cause minor soft tissue disruption and require little bony resection. We report the results of our first 25 prostheses performed over the past 5 years in 19 patients. The mean age was 42.5 years, (range, 24-59 years), with a preoperative Ficat classification of 15 hips, stage III; 9 hips, stage IV; and I hip, stage II. For the surviving prostheses, mean follow-up was 43 months, (range, 20-60 months). Of these 19 surviving implants, 15 continue to function well with excellent or good hip scores according to the Merle d'Aubigne system. We have had 6 failures: 1 owing to technical error, 4 owing to local tissue factors, and 1 owing to a progression of the osteonecrosis. The parameters for the use of this prosthesis are defined with our increasing experience, and the prosthesis is compared with other prosthetic implants available. In comparison with alternative techniques, the operative surgery is straightforward requiring little preoperative planning; immediate weight bearing is allowed postoperatively. Should failure occur, little bone stock loss is incurred, and revision to a total hip replacement is as simple as primary hip arthroplasty.

Adult↗
PubMed1993

[Free transfer of the vascularized fibula in pseudarthrosis and femoral bone loss].

The authors report their experience of femoral reconstruction by free fibular graft transfer. Twenty eight patients were operated on between 1977 and 1988. The average follow-up was 7 years and 3 months. The etiology of most of the cases was a post traumatic lesion (70 per cent). Loss of substance was found in 19 cases. 60 per cent of these were septic. The approach was usually posterior and vessels from the sciatic nerve were used. Union was obtained in 89 per cent of the cases. In 65 per cent of the cases union occurred in less than 1 year. In 1 out of 4 cases graft thickening was necessary and achieved by secondary bone grafts. The comparison of this technique with standard treatments evidenced a definite superiority of vascularized bone grafts in cases of septic pseudarthrosis and significant losses of bone.

Adolescent↗
PubMed1991

[Reconstruction of loss of bony substance in limbs by free vascularized fibula transplant].

The authors present their experience of bone-loss reconstruction by a free vasculized fibular transfer. 62 cases were operated, with an average follow-up of 6 years (between 24 to 13 years). Studied were 15 upper limbs (10 humerus, 3 ulna, 2 radius), 28 femurs and 19 tibias. We found a male predominance: 46 cases and the average age was 33 years old. The etiology was often due to trauma: serious road traffic accidents (37 cases). 44 cases were septic and the average bone-loss was of 10 cm (between 4 cm to 30). The most frequent complications were due to fractures of the graft (10 cases) and stiffness (15 cases). Consolidation rate was of 87%: 8 were failures (3 upper limbs: 20% at femur level, 10% at tibia level). The average consolidation rate of the septic cases was of 81%, and the non-septic cases over 97.5%. It seems to be a good technique and in particular for septic cases using a basic orthopedic technique and microsurgical suture.

Bone Transplantation↗
PubMed1976

[Gas gangrene].

Explore the source record for details and available documents.

Female↗
PubMedDate not supplied

A noncemented total hip prosthesis.

Although total hip arthroplasty stabilized by cement has been a great step forward, loosening is becoming more and more frequent and constitutes a significant problem. This is a report of the design of a non-cemented prosthesis in which fixation of the prosthesis is secured by the in-growth of newly-formed bone into the irregularities of the metal. In more than 2000 cases with a follow-up of 5 1/2 years, this fixation design proves to be sound. The complications are relatively rare and the results are generally good.

Aged↗