[A woman with floating spheres in her abdomen].

A 55-year-old postmenopausal woman presented with acute abdominal pain. Ultrasound and MRI revealed a large, unilocular, cystic abdominal mass, with remarkable floating spheres. Histopathology showed a dermoid cyst.

Survival of massive allografts in segmental oncological bone defect reconstructions.

Reconstructions of large segmental bone defects after resection of bone tumours with massive structural allografts have a high number of reported complications including fracture, infection and non-union. Our goal is to report the survival and complications of massive allografts in our patients. A total of 32 patients were evaluated for fracture, infection, non-union rate and survival of their massive allograft reconstructions.

The stability of the femoral component of a minimal invasive total hip replacement system.

In this study, the initial stability of the femoral component of a minimal invasive total hip replacement was biomechanically evaluated during simulated normal walking and chair rising. A 20 mm diameter canal was created in the femoral necks of five fresh frozen human cadaver bones and the femoral heads were resected at the smallest cross-sectional area of the neck. The relatively short, polished, taper-shaped prostheses were cemented centrally in this canal according to a standardized procedure.