Behavior of the extensor pollicis longus tendon in experiment.

Several experimental rupture tests of the extensor pollicis longus tendon proved that a rupture of a tendon caused by experiments is located in a region in which the rupture is mainly found clinically as well. By using a newly developed Silicon impression system it can be proved that in the course of a tendon there is always a certain place which has the smallest cross section. This is more or less identical with the location of the rupture. Thus, ruptures of the extensor pollicis longus tendon can be experimentally simulated.