The Journal of hand surgery
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To investigate changes in lengths of the ligaments stabilizing the distal radioulnar joint during forearm pronation and supination in vivo. ⋯ These in vivo measurements validate that in forearm pronation, the dorsal superficial radioulnar ligament and palmar deep radioulnar ligament tighten, serving as restraints for the distal radioulnar joint instability. In forearm supination, the palmar superficial radioulnar ligament and dorsal deep radioulnar ligament tighten, maintaining stability of the distal radioulnar joint.
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To retrospectively analyze consecutive cases with opening wedge corrective osteotomy of the volarly malunited distal radius with iliac bone graft, including preoperative and postoperative comparison of symptoms, visual analog scale (VAS), Japanese Society for Surgery of the Hand version of the Disabilities of the Arm, Shoulder, and Hand (DASH-JSSH) questionnaires, radiographic indices, clinical results as evaluated by modified Mayo wrist score, and complications. ⋯ Therapeutic IV.
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Although the strength of a tendon repair is clearly important, the friction of the repair is also a relevant consideration. The purpose of this study was to characterize the frictional coefficient, gliding resistance, and breaking strength of suture materials and a suture construct commonly used for flexor tendon repair. ⋯ Braided polyester composite is a low-friction suture material. However, when this suture was used for tendon repair with a locking suture technique, it did not show a significant effect on the gliding resistance and repair strength compared with the same repair using a coated polyester suture.
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To report the results of nerve transfer to the serratus anterior muscle using the thoracodorsal nerve for winged scapula in C5 and C6 brachial plexus avulsion. ⋯ Therapeutic IV.
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The role of the posterior bundle of the medial collateral ligament in stability of the elbow remains poorly defined. The purpose of this study was to determine the effect of sectioning the posterior bundle of the medial collateral ligament on the stability of the elbow. ⋯ These results indicate that isolated sectioning of the posterior bundle of the medial collateral ligament causes a small increase in varus angulation and internal rotation during both passive varus and active vertical flexion. This study suggests that isolated sectioning of the posterior bundle of the medial collateral ligament may not be completely benign and may contribute to varus and rotation instability of the elbow. In patients with insufficiency of the posterior bundle of the medial collateral ligament, appropriate rehabilitation protocols (avoiding forearm pronation and shoulder abduction) should be followed when other injuries permit.