The Journal of hand surgery
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Ulnohumeral subluxation or dislocation is rare after open reduction and internal fixation of a bicolumnar fracture of the distal humerus. We report 3 patients in whom detachment of the origins of the lateral collateral ligament and common extensor muscle origins from the lateral epicondyle contributed to postoperative instability after open reduction and internal fixation of a fracture of the distal humerus. This may be due to either unrecognized ligament injury or iatrogenic injury during surgical dissection.
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To demonstrate that surgical repair of partial distal biceps tendon ruptures allows return of supination and flexion strength nearly equal to the contralateral side without compromising range of motion. ⋯ Therapeutic IV.
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To evaluate the safety and efficacy of a hybrid flexor carpi radialis (FCR) approach for volar plate osteosynthesis of displaced distal radius fractures with concurrent prophylactic carpal tunnel release (CTR) in patients without preoperative signs or symptoms of acute carpal tunnel syndrome secondary to the fracture. ⋯ Therapeutic IV.
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Hammering is a functional task in which the wrist generally follows a path of motion from a position of combined radial deviation and extension to combined ulnar deviation and flexion, colloquially referred to as a dart thrower's motion. The purpose of this study was to measure wrist and forearm motion and scaphoid and lunate kinematics during a simulated hammering task. We hypothesized that the wrist follows an oblique path from radial extension to ulnar flexion and that there would be minimal radiocarpal motion during the hammering task. ⋯ The simulated hammering task was performed using a wrist motion that followed a coupled path of motion, from extension and radial deviation to flexion and ulnar deviation. Scaphoid and lunate rotations were greatly reduced, but not minimized, compared with rotations during pure wrist flexion/extension. This is likely because an extended wrist position was maintained throughout the entire task studied.