Complete rupture of the quadriceps extensor tendon is an uncommon injury. When it occurs, there is total loss of extension at the knee joint.
Apparently this injury occurs only in people well along in adult life.
In cases where the rupture of the tendon has been complete and flush to the patella, strips of fascia lata may be used to close the tear. These strips are passed through drill holes in the upper part of the bone and then through the tendon in the form of mattress sutures.
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