Entrapment syndromes of the lower extremities

An entrapment syndrome is defined as a chronic nerve irritation in fibro-os seous tunnel. The entrapment syndromes of the lower extremities ore the fol lowing. 1.) tarsaltunnel syndrome with compression of the tibial nerve post erior and inferior to the medial malleolus, 2.) Morton's syndrome with irri tation of the 4(th) N. digitalis plantaris communis between the capitula of the 3(rd) and 4(th) metatarsal bones, 3.) saphenus neuropathy with compres sion of the saphenus nerve in the canalis adductorius Hunter, 4.) meralgia paraesthetica with irritation of the lateral cutaneaus nerve beneath the in guinal ligament, 5.) piriformis syndrome with compression of the sciatic ne rve under the piriformis muscle, 6.) ilioinguinalis syndrome with lesion of this nerve passing the muscles of the abdominal well. The diagnosis con pa rtially be ensured by electrodiagnostic methods. Therapeutically, infiltrat ions of local anaesthetic drugs can be performed or surgical exploration an d decompression will be necessary.