Arterial and neural damage following total 1972. The standard lateral approach was utilized. A Miillerhiw rewlacement is not common. Three cases are rewort-Charnley type prosthesis was inserted and the operation pro-> L A ed. ~h~ first patient had an isolated femoral nerve ceeded uneventfully. However, postoperatively a paralysis of the quadriceps muscle was observed. Electromyographic examina-The second case a aneurysm tion revealed damage of the femoral nerve. The neuropathy was arising from the external artery 2 months after hip presumed to be caused by pressure from retractors during the . -surgery and the third patient sustained a tear of the operation. external iliac artery during the operation. The nerve Two months after the operation, improvement of the and vessel injuries were caused by retractors. In both femoral nerve paralysis was apparent and within 1 Year the patient was asymptomatic. patients with arterial damages a transitory femoral nerve involvement occurred. The prognosis was good Case 2. A Miiller-Charnley total hip prosthesis was inserted in a in all patients. Preventive measures are discussed. 64-year-old woman in December 1977. The indication was redislocation of a femoral neck fracture on the left side, nailed 2 months earlier. Lateral exposure using Hohmann retractors was