Patella displacement measuring device

摘要

A device for evaluating the integrity of the patella femoral joint measures movement of the patella in response to a lateral force applied against the patella of a flexed leg supported in a relaxed position. The device includes a measuring instrumentality which is positionable against the patella to measure the linear displacement of the patella in response to the lateral force. The magnitude of the applied force is correlated with the degree of leg flexion and the linear displacement of the patella to indicate the health and condition of tissues in the knee which resist dislocation of the patellofemoral joint and which promote alignment of the patella within the joint.