Most proximal humeral fractures are stable injuries of the ageing population, and can be successfully treated non-operatively. The management of the smaller number of more complex displaced fractures is more controversial and new fixation techniques have greatly increased the range of fractures that may benefit from surgery. This article explores current concepts in the classification and clini...

Increase in the use of shoulder arthroplasty has resulted in the emergence of periprosthetic fractures of the humerus. The management of such fractures is technically demanding. We describe a case in which a displaced periprosthetic fracture at the tip of a stable humeral implant was successfully managed with the Dall-Miles plate and cables system.

We study a lattice model for mode III crack propagation in brittle materials in a stripe geometry at constant applied stretching. Stiffening of the material at large deformation produces supersonic crack propagation. For large stretching the propagation is guided by well-developed soliton waves. For low stretching, the crack-tip velocity has a universal dependence on stretching that can be obta...

BACKGROUND Severe comminution, bone loss, and osteopenia at the site of a distal humeral fracture increase the risk of an unsatisfactory result, often secondary to inadequate fixation. The purpose of this study was to determine the outcome of treating these fractures with a principle-based technique that maximizes fixation in the articular fragments and stability at the supracondylar level. M...

The repair of seven tibiotarsal fractures, three humeral fractures, three tarsometatarsal fractures, two femoral fractures and 13 radial and ulnar fractures with a tubular external fixator system was evaluated prospectively in 10 common pigeons (Columba livia), 11 psittacine birds, six birds of prey and one Bali starling (Leucopsar rothschildii). The fixations included type 1, type 2 and intram...

Sleeve fractures of the upper pole of the patella in children are rare; only 2 cases have been reported in the English literature and 1 case in the German literature. We present a case of this unusual lesion in order to stress the importance of being aware of the existence of upper pole sleeve fractures of the patella. We review the literature and we describe the symptoms, the clinical and radi...