The aseptic displacement of a prosthesis is one of the most common complications of orthopedic surgery; sometimes patients require reintervention. We report the case of an 83 year old woman with a history of postmenopausal osteoporosis with weekly bisphosphonate treatment and daily intake of calcium and vitamin D and a hip fracture right at 64, treated with a cemented prosthesis. She attended t...

Deep infection, the most serious local complication of total hip replacement, prompted a study of the records of 135 patients (137 hips) thus afflicted in a nationwide survey of Canada. Particular attention has been paid to the natural history of the infection, and the problems of diagnosis are described. Twenty-one patients died after the insertion, or removal, of the prosthesis, and of the su...

In 1946, the Judet brothers performed their first ‘resectionreconstruction’ of the femoral head (Judet 1947) using a prosthesis made entirely of polymethylmethacrylate (PMM.A). The early implants broke frequently and were later reinforced by a steel rod (Judet and Judet 1950). Failures continued, however, and use of the prosthesis was abandoned decades ago. Case report. In 1952, a 12-year-old g...

The aseptic displacement of a prosthesis is one of the most common complications of orthopedic surgery; sometimes patients require reintervention. We report the case of an 83 year old woman with a history of postmenopausal osteoporosis with weekly bisphosphonate treatment and daily intake of calcium and vitamin D and a hip fracture right at 64, treated with a cemented prosthesis. She attended t...

AIM The present paper aims to decipher the multiple factors occurring in patients on the recovery program, in order to obtain an optimal functional outcome after the implantation of a primary total hip prosthesis. MATERIAL AND METHOD One hundred patients operated with primary total hip prosthesis, consecutively included in this study, underwent an immediate postoperative recovery program, wit...

In this paper the stress distribution of a complete assembly of femur and hip prosthesis is investigated with realistic boundary conditions under nine routine activities using finite element analysis. In each activity, different forces of varying magnitude and orientation were applied on the prosthesis during a period of time to examine the critical points developed in the entire 3D model. This...

We quantify how the hip energetics and knee torque required for an above-knee prosthesis user to walk with the kinematics of able-bodied humans vary with the inertial properties of the prosthesis. We also select and optimize passive mechanical components for a prosthetic knee to accurately reproduce the required knee torque. Previous theoretical studies have typically investigated the effects o...

PURPOSE To improve function after pelvic resection involving the acetabulum, using an anatomic composite implant built with screws and cement. MATERIAL AND METHOD Since 1990, 66 patients with peri-acetabular bone malignancies have been treated by extensive resection followed by hand-modelled innominate prosthesis with partially constrained total hip prosthesis. The hand-modelled innominate pr...

INTRODUCTION The present study was performed to compare cemented total hip replacement (THR) with cemented bipolar prosthesis in the treatment of displaced fracture neck of femur in elderly patients. MATERIALS AND METHODS This prospective study included 47 patients of greater than 60 years of age and having fracture of neck of femur, out of which 25 patients were managed by cemented bipolar p...