Engpasssyndrome der unteren extremitaten

An entrapment syndrome is defined as a chronic nerve irritation in fibro-osseous tunnel. The entrapment syndromes of the lower extremities are the following: 1.) tarsaltunnel syndrome with compression of the tibial nerve posterior and inferior to the medial malleolus, 2.) Morton's syndrome with irritation of the 4th N. digitalis plantaris communis between the capitula of the 3rd and 4th metatarsal bones, 3.) saphenus neuropathy with compression of the saphenus nerve in the canalis adductorius Hunter, 4.) meralgia paraesthetica with irritation of the lateral cutaneous nerve beneath the inguinal ligament, 5.) piriformis syndrome with compression of the sciatic nerve under the piriformis muscle, 6.) ilioinguinalis syndrome with lesion of this nerve passing the muscles of the abdominal wall. The diagnosis can partially be ensured by electrodiagnostic methods. Therapeutically, infiltrations of local anaesthetic drugs can be performed or surgical exploration and decompression will be necessary.