MODEL RELEASED. McMurray's knee joint test. Physiotherapist performing a McMurray's knee joint test on a patient. The McMurray test is designed to assess injuries to the cartilage in the knee. The physiotherapist places one hand on the knee with her fingers aligned along the medial joint line. The foot is grasped with the other hand, and the knee is flexed (seen here). The foot is then slightly twisted outwards, and the knee pointed outwards as well. The knee is then gently extended and flexed. If there is an injury to the medial meniscus (the internal pad of cartilage in the knee), then an audible or painful click will be heard or felt.