CLS MULTICENTER STUDY - REVIEW AFTER 8 YE ARS

The principles of proximal fixation of cementless endoprostheses is es tablished already. This theory was the subject of the present multi-ce nter study of 22 clinics. Between 1984 and 1992 all 1830 patients with an uncemented CLS press-fit stem had a clinical and radiological foll ow-up examination and computer documentation. The evaluation of the cl inical results are based on the Merle d'Aubigne score. In 91% we found a good or excellent result. For the remainder of patients (9%) with a score less than 14 each case has been especially analised. The incide nce of femor component loosening was less than 1% within the average f ollow-up time of 2,5 years. The medium-term results with the uncemente d CLS press-fit stem confirmed the idea of proximal load induction on the femur.