It is a research which could enter into contradiction with the current trend concerning the hip implants. It is known as sliding friction, which is characteristic of present artificial hip joints, is higher than in the case of rolling friction. The paper reports the studies of the functioning mode of a novel spherical bearing MoM (metal on metal) with rolling friction, with potential applicatio...

In this study, porous-coated, fixed with screwed-system femoral prosthesis and total hip prosthesis composed of screwed-system acetabular cup were applied on 21 dogs of different breeds, sexes and ages. Total hip arthroplasty (THA) was applied as one sided in all cases. In 7 cases luxation occured and in 5 of them the prostheses were taken out. One of the cases had a second operation for disloc...

Individuals with unilateral below-knee amputation expend more energy than non-amputees during walking and exhibit reduced push-off work and increased hip work in the affected limb. Simple dynamic models of walking suggest a possible solution, predicting that increasing prosthetic ankle push-off should decrease leading limb collision, thereby reducing overall energy requirements. We conducted a ...

We describe a modified surgical technique for the reconstruction of major acetabular defects using a coned acetabular component (the Stanmore 'ice-cream' cone prosthesis) and report its early clinical outcomes. A single surgeon performed 28 acetabular reconstructions using a stemmed-cone acetabular prosthesis (mean age 70.9 years; 61% female) in 15 oncology patients with periacetabular metastas...

BACKGROUND Approximately half of all hip fractures are displaced intracapsular fractures. The standard treatment for these fractures is either hemiarthroplasty or total hip arthroplasty. The recent National Institute for Health and Care Excellence (NICE) guidance on hip fracture management recommends the use of 'proven' cemented stem arthroplasty with an Orthopaedic Device Evaluation Panel (ODE...

There are an increasing number of radiation therapy patients with hip prosthesis. The common method of minimizing treatment planning inaccuracies is to avoid radiation beams to transit through the prosthesis. However, the beams often exit through them, especially when the patient has a double-prosthesis. Modern treatment planning systems employ algorithms with improved dose calculation accuraci...

UNLABELLED Early periprosthetic osteolysis following total hip replacement (THR) as a result of septic etiology has been well understood. Periprosthetic bone loss as a result of metastatic infiltration is an uncommon and infrequent cause of early, progressive loosening of joint replacement prosthesis. Proximal femur has been the most common site of involvement compared to acetabular prosthesis....