PURPOSE The purpose of this study was to evaluate the clinical and radiological results of total hip arthroplasty using a proximal modular femoral stem in patients who had secondary coxarthrosis associated with a dysplastic hip. MATERIALS AND METHODS Forty-two patients (45 hips) with secondary coxarthrosis were evaluated after undergoing primary total hip arthroplasty using an S-ROM proximal ...

Revision surgery of the hip was performed on 114 hips using an extensively porous-coated femoral component. Of these, 95 hips (94 patients) had a mean follow-up of 10.2 years (5 to 17). No cortical struts were used and the cortical index and the femoral cortical width were measured at different levels. There were two revisions for aseptic loosening. Survivorship at 12 years for all causes of fa...

The cortical strains on the femoral neck and proximal femur were measured before and after implantation of a resurfacing femoral component in 13 femurs from human cadavers. These were loaded into a hip simulator for single-leg stance and stair-climbing. After resurfacing, the mean tensile strain increased by 15% (95% confidence interval (CI) 6 to 24, p = 0.003) on the lateral femoral neck and t...

Revision total hip arthroplasty (THA) is challenging when there is severe loss of bone in the proximal femur. The purpose of this study was to evaluate the clinical and radiographic outcomes of revision THA in patients with severe proximal femoral bone loss treated with a fluted, tapered, modular femoral component. Between January 1998 and December 2004, 92 revision THAs were performed in 92 pa...

25 This study aimed to demonstrate the higher accuracy and reproducibility of quantitative 26 computed tomography (QCT) compared with dual-energy X-ray absorptiometry (DXA) as a gold 27 standard for measuring canine bone mineral density (BMD). Seven middle-aged beagle dogs 28 underwent lumbar vertebral and bilateral femoral DXA and QCT scans. BMD (mg/cm) was 29 measured at the vertebral body fr...

Although the existence of atypical femoral fractures is well established and bisphosphonate therapy is thought to be a major risk factor, the underlying mechanisms are poorly understood. Epidemiological data show that atypical femoral fractures account for only a small proportion of diaphyseal subtrochanteric femoral fractures, being about 100 times less common than proximal femoral fractures. ...

background hip fracture–related pain both before and after surgery is generally reported as severe by most patients. various regional pain control modalities have been described in order to reduce pain in these patients. objectives because of the challenges of lumbar plexus block (lpb) and the fact that the effect of combined femoral nerve block/spinal anesthesia in controlling pain after ortho...

Surgical treatment to restore full range of motion and full weight bearing after extensive femoral bone resection in patients with primary or metastatic femoral tumours is individually challenging. Especially when the remaining distal or proximal bone is very short, a rigid fixation of an implant is difficult to achieve due to the reverse funnel shape of the metaphysis. Herein, we present a nov...

Background. The biomechanical effect of two implants, namely, proximal femoral nail antirotation for Asia (PFNA-II) and Expert Asian Femoral Nail (A2FN), for treating subtrochanteric fracture during healing stages, is still unclear. Methods. A 3D finite element model of an intact femur was constructed and validated. The fractured and postoperative models were accordingly produced. The postopera...