Avascular necrosis (AVN) of the capitate bone is very rare. It was first reported by Jonsson in 1942 and about 30 additional cases have been reported since. Most of the cases were associated with serious trauma, but in some cases, severe trauma has not played a major etiologic role. In our case, we propose that the cause of the avascular necrosis of the capitate bone was repetitive minor trauma...

Introduction: Avascular necrosis of the lunate bone was described in 1910 by Austrian radiologist Robert Kienböck, which is named after him. A mixture different factors such as mechanical, vascular and genetic predisposition may be related to pathogenesis this disease. As for natural evolution disease, failure early diagnosis treatment lead a gradual from stage I IV, causing discomfort patient....

We treated 34 consecutive articular fractures of the proximal humerus in 33 patients with good bone quality by open reduction and internal fixation. Anatomical or nearly anatomical reduction was achieved in 30, at a mean follow-up of 63 months (25 to 131), complete or partial avascular necrosis had occurred in 12 cases (35%). Two patients subsequently underwent arthroplasty and six further pati...