[Initial Results with Non-cemented Walter-Motorlet Prostheses of the Hip Joint.]

The authors present their experience with the use of non-cemented total endoprostheses of the hip joint. During a 5-year period at the First Orthopaedic Clinic of the First Medical Faculty, Charles University, Prague 178 non-cemented hip joint prostheses were implanted. The authors evaluated, using internationally accepted criteria, 69 patiens with non-cemented prostheses of the hip joint Walter-Motorlet after an interval of more than 20 months. The intensity of pain was reduced, the consumption of analgesics lower. The patients' capacity to look after themselves improved. The distance patients are able to cover without resting increased. Heterotopic ossifications were found in 20 patients but only low grades. Translucent X-ray lines at the borderline between the implant and bone were found in 20 patients but they were only 2 mm wide and sharply defined. Subjective evaluation by the patient and surgeon was in all instances favourable. The authors evaluate also complications in the entire group of 178 operated patients and analyze the surgical method used. Walter-Motorlet non-cemented prostheses are indicated in biologically young patients. They are very suitable for patients with acetabular dysplasia and in patients with rheumatic disease. An unequivocal contraindication are severe forms of metabolic diseases which do not create conditions for secondary bone fixation. Key words: non-cemented total prosthesis of the hip joint, results, complications, indications, contraindications.