Étude mécanique de la cupule tripolaire à double mobilité dans les arthroplasties totales de la hanche

L'instabilité est une complication majeure des prothèses totales de hanche. Les implants tripolaires ont été développés pour améliorer la stabilité. Leur succès contraste avec le manque de données scientifiques les concernant. Nous présentons une étude de mobilité et de stabilité de ces implants. Une simulation des amplitudes de mobilité montrait que celles des implants tripolaires étaient supérieures aux implants conventionnels, surtout en cas de risque de luxation. Sans les structures anatomiques, les implants tripolaires étaient plus stables lorsqu'un contact intra prothétique précédait la luxation. Les résultats étaient comparables avec un implant conventionnel expérimental présentant le même rapport tête/col. Le recours à la technologie optoélectronique a permis d'établir la mobilité relative des implants tripolaires concentriques : in vitro le mouvement siégeait d'abord entre la tête prothétique et la concavité de l'insert puis entre la convexité de l'insert et la cupule externeLYON1-BU.Sciences (692662101) / SudocPARIS-Académie Médecine (751065201) / SudocSudocFranceF

Descellements acétabulaires de stade III de la classification de la S.O.F.C.O.T (utilisation de l'armature acétabulaire métallique de soutien de Kerboull; étude rétrospective de 50 cas avec un recul minimal de 5 ans)

DIJON-BU Médecine Pharmacie (212312103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Chirurgie prothétique du genou chez le patient hémophile (étude rétrospective à propos de 33 cas)

LYON1-BU Santé (693882101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Reconstructed hip joint architecture with a standard hip arthroplasty with a unique declined offset

Abstract: Possible advantages of the architectural restoration of the hip joint after total hip arthroplasty (THA) are numerous. The relationship between the femoral offset (FO) and the abductor moment arm and the polyethylene wear, loosening, instability, persistent limp due to gluteus medius insufficiency, even dislocation, leg length discrepancy have been reporte

Nine years follow-up of 100 ceramic-on-ceramic total hip arthroplasty

The aim of this study was to evaluate the first 100 cementless ceramic-on-ceramic total hip arthroplasty (THA) performed at our institution with more than nine years of follow-up. Clinical evaluation was performed using Harris hip score. Radiological evaluation was performed by two surgeons. Four patients were lost to follow-up. Harris hip score significantly improved at latest follow-up. Radiological analysis showed calcar osteolysis for 75 patients and one cup loosening. One patient required a revision five years postoperatively for cup loosening. Based on these results and the routine use of a navigation system to optimise positioning of the implants, we advocate the use of uncemented hydroxyapatite coated ceramic-onceramic THA in young and active patients in our current practice

Hip Squeaking: A 10-Year Follow-Up Study

The aim of the study was to analyze the incidence of squeaking with ceramic-onceramic total hip arthroplasty (THA) after 10 years of follow-up and the potential complications that could occur related to this phenomenon. One hundred THAs implanted between November 1999 and December 2000 were evaluated. Incidence of squeaking was investigated clinically with a questionnaire. Implant positioning was analyzed on x-rays and computer tomography. Of the 100 THAs, 5 patients presented with squeaking. All of them were active, sporty, and heavy men. Functional scores were comparable with nonsqueaking patients. There was no malpositioning on the x-ray analysis, no wear, and no loosening. We could not demonstrate any relation between squeaking and ceramic fracture. Squeaking noise appeared at a mean of 66 months postsurgery. It appears to be an isolated phenomenon without any consequences at 10-year follow-up

Acetabular reconstruction using a Kerboull cross-plate, structural allograft and cemented dual-mobility cup in revision THA at a minimum 5-year follow-up

The current study aimed to evaluate the outcome of a continuous and prospective series of 61 revision THAs with AAOS grade III and IV acetabular bone defect reconstruction using a Kerboull cross-plate, structural allograft and cemented dual mobility cup (Saturne, Amplitude, Valence, France). At a 7.5-year mean follow-up, no instability was reported after revision. In addition, no failure of the acetabular reconstruction was observed in 98% of the patients with complete allograft osseointegration and no evidence of mechanical rupture of the Kerboull cross-plate and/or loosening of the cemented dual mobility cup. In conclusion, such reconstruction technique demonstrated excellent results at mid-term follow-up in terms of prevention of instability after revision, restoration of the acetabular bone stock, and stable cemented fixation of the dual mobility cup

Early to mid-term results of total knee arthroplasty in hemophilic knees: a review of 34 cases

Total knee arthroplasty (TKA) in hemophilic knees is getting renewed attention as both surgical techniques ans implants and medical management of hemophilia have improved

Early to mid-term results of total knee arthroplasty in hemophilic knees: a review of 34 cases

Total knee arthroplasty (TKA) in hemophilic knees is getting renewed attention as both surgical techniques ans implants and medical management of hemophilia have improved