[Knee joint infections].

Knee joint infection represents an emergency case at every age. Joint infection occurs frequently after trauma or joint surgery. The infection can be caused by numerous bacteria, viruses, or yeasts; however, Staphylococcus aureus is identified as the cause in 85-95 % of joint infections.

[Clavicle fractures].

Clavicle fractures are the most common break injuries in humans second to radius fractures. They often occur alone, mostly after falling directly onto the shoulder and less often onto the stretched out arm. They are also not uncommon in connection with high speed trauma or multiple injuries.

[Preventing malrotation during intramedullary nailing of femoral fractures].

Background: The problem of preventing malrotation after closed intramedullary nailing of femoral shaft fractures has not been solved yet. As clinical tests and radiologic criteria for intraoperative use provide little accuracy, the theoretical basis for a C-arm-based measurement of the femoral antetorsion was analysed.

Methods: The directions of femoral neck axis and condylar axis can be identified by the radiologic views "knee joint, lateral view" and "hip joint, axial view".