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Schematic diagram of an apparatus used to load and measure forearm rotation of upper extremity specimens. The humerus is fixed, but the forearm can rotate freely. The distal end is pinned to a pulley, through which a torque is applied by a deadweight. (Reprinted from Bronstein AJ, Trumble TE, Tencer AF. The effects of distal radius fracture malalignment on forearm rotation: A cadaveric study. J Hand Surg Am 1997;22(2):258-262, with permission from Elsevier.)
