[Comparative study of the stabilizing effect of conservative-functional measures of the unstable upper ankle joint].

In a comparative study the value of castless immobilisation methods for stabilising the lateral ankle instability was examined. For this the dimension of the lateral talar tilt as a sign for chronic lateral ankle instability in 32 sportsmen with chronic ankle instability was checked initially. Afterwards the reduction of this instability due to the application of the tape-bandage and the "ankle-brace" was tested under the same standardised conditions. In regard to the reduction of the lateral talar tilt a reduction of this instability of the ankle joint is possible significantly. But compared to the normal talar tilt showing a stable ankle joint, it is not possible to reach this in all cases of ankle instability. So for treatment of the lateral ligament rupture it is necessary to use the usual cast for stabilising the joint after ligament suture before reduction of the time of immobilisation is possible. The use in cases of chronic instability or as a precaution method is not restricted when a sufficient active stabilisation is possible.