Traumatic ulnar translocation of the carpus: early recognition and treatment.

This study evaluated the clinical outcomes and radiographic features of surgically treated traumatic ulnocarpal translocation in nine patients (ten cases). All ligament and fracture repairs were completed within 2 months of injury. Seven cases were examined at a mean of 6.5 years, and information in three cases was obtained from medical records at a mean of 13 months after injury. At final evaluation, the mean disabilities of the arm, shoulder, and hand score was 6 (range, 0-16), and the mean Mayo modified wrist score was 76 (range, 40-100). Ulnocarpal translocation was evident in nine of the injured wrists, six of which showed arthritis, and in four of the uninjured wrists. Ulnar variance measured negative in nine cases and neutral in one case. Pre-existing medial alignment of the carpus and ulnar minus variance may predispose to traumatic ulnocarpal translocation. Early injury repair does not assure restoration of radiocarpal alignment or prevent joint deterioration; however, these changes do not always portend a suboptimal result.

Providing quantitative feedback when teaching tendon repair: a new tool.

Flexor tendon repair remains one of the more difficult technical tasks facing the hand surgeon. A good repair must be both strong and able to glide smoothly through the tendon sheath. The purpose of this study is to present a model that allows surgeons to improve their technique of flexor tendon repair by receiving feedback on these important biomechanical parameters. The set-up requires testing equipment found in most biomechanical laboratories and should be available in many academic medical centres. Preliminary data suggest that receiving feedback about the strength and smoothness of a flexor tendon repair may be a very useful tool in helping surgeons improve the overall quality of their tendon repair technique.