Under physical stress, partial or complete tears of the muscle fibers of the medial head of the gastrocnemius may occur. Radiographs made by soft-tissue technique can be especially helpful in diagnosing partial ruptures, which are sometimes difficult to detect. Intermittent claudication can be caused by an abnormal position of the medial head of the gastrocnemius, resulting in compression of the popliteal vessels. Angiography or computerized tomography will usually disclose the site of local pressure. Surgical intervention may be necessary to eliminate the compression.