INTRODUCTION The avascular necrosis of the femoral head represents the death of bone tissue due to the lack of blood supply. The disease has a progressive evolution and left untreated leads to femoral head collapse and severe arthritis. CASE PRESENTATION We present a case of a pertrochanteric fracture which has been successfully operated with a dynamic interlocking trochanteric gamma nail on ...

Osteometric measurements of the femur are consistently used to estimate stature, sex, and race in constructing demographic profiles. The presence of positive or negative changes in the size of the maximum vertical diameter of the femoral head could potentially affect the validity of such profiles. Additionally, changes in femoral head size may be an indicator of the socioeconomic status, health...

Correspondence to: Dr M P Seed, Departments of Experimental Pathology and Rheumatology, St Bartholomew's Hospital Medical College, Charterhouse Square, London ECIM 6BQ, United Kingdom. Accepted for publication 20 August 1992 Abstract Interleukin 1 induced proteoglycan loss from cartilage in vitro was prevented by a biochemical inhibitor of metalloproteinase activity. The inhibitor also partiall...

The acetabular coverage of the femoral head has been assessed in two-dimensions as the projected covered area or the covered angle on plain radiographs. We present a novel method of the three-dimensional assessment of femoral head coverage obtained by evaluating the covered volume of the femoral head in both normal and dysplastic hips. We also assessed the covered angles on the vertical slices ...

Osteonecrotic collapse of the femoral head is a common refractory disease in orthopedics, and the occurrence of collapse is an important factor in the prognosis of this condition. Osteonecrotic collapse of the femoral head can be delayed or prevented by the formation of a sclerotic rim. This study used finite element analysis to evaluate the mechanical role of a proximal sclerotic rim on stress...

1. Post-graduation student, Orthopaedics and Traumatology Institute, Hospital das Clínicas, USP Medical College. 2. Orthopaedic doctor. 3. Health Technologist, Laboratory of Biomechanics, Orthopaedics and Traumatology Institute, Hospital das Clínicas, USP Medical College. 4. Assistant Doctor, Orthopaedics and Traumatology Institute, Hospital das Clínicas, USP Medical College. 5. Assistant Docto...

BACKGROUND Previous studies regarding modular head-neck taper corrosion were largely based on cobalt chrome (CoCr) alloy femoral heads. Less is known about head-neck taper corrosion with ceramic femoral heads. QUESTIONS/PURPOSES We asked (1) whether ceramic heads resulted in less taper corrosion than CoCr heads; (2) what device and patient factors influence taper fretting corrosion; and (3) w...