Axial and tangential views of the acromioclavicular joint: the introduction of new projections.

Background: Routine anteroposterior radiographs of the acromioclavicular (AC) joint with or without weight bearing have limitations in demonstrating the AC joint. Transarticular fixation with Kirschner wire is a treatment choice for AC dislocations. However, percutaneous fixation of the AC joint is technically demanding.

Comparison of two kinds of intramedullary nails in the treatment of femoral shaft fractures in adults.

Background: Intramedullary nails have been widely used in treating femoral shaft fractures. However, end caps falling into soft tissue intraoperatively may cause trouble to surgeons, prolong operative time and increase radiation exposure. Additionally, difficulties may be encountered when removing nails because of callus formation over the nail tip.