Abstract
DesignIn vitro biomechanical research using an elbow motion simulator. IntroductionThe optimal rehabilitation of elbow dislocations with medial collateral ligament (MCL) and lateral collateral ligament (LCL) injuries has not been defined. PurposeTo determine a safe rehabilitation protocol for elbow dislocations with MCL and LCL injuries. MethodsEight cadaveric elbows underwent simulated active and passive motions with the arm in multiple orientations. Varus–valgus angulation and internal–external rotation of the ulna relative to the humerus were quantified for the intact joint and with injured MCL and LCL. ResultsActive motion with injured MCL and LCL in the horizontal and vertical orientations resulted in kinematics similar to the intact elbow, whereas passive motion resulted in significant kinematic alterations. Marked elbow instability was noted in the varus and valgus orientations using both active and passive motion. ConclusionsElbows with MCL and LCL injuries should be rehabilitated using active motion in the horizontal or vertical orientations. Level of EvidenceBasic science research.
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