COMPARISON OF KNEE LIGAMENT RATING SYSTEM S

The results of the treatment of knee instabilities are evaluated by di fferent scoring systems including subjective and/or objective criteria . Because of their number and their different criteria a comparison be tween the scoring systems is still a problem. The aim of this study wa s to analyze 14 different scoring-systems and prove the comparison of the commonly used rating scales. 116 patients with anterior or anterio r-medial knee instabilities were followed up at least 2 years postoper atively. The evaluation was performed according to the criteria of the used rating-scales. The Lysholm I scoring system showed the highest m ean total score (92 points). The scales that gave the highest correlat ion were the Cincinnati and ARPEGE scoring system (r=0.97). The Lyshol m I Scale and the Barrack Scale correlated least well (r=0.711). This study documents that a transfer of results from one scoring system to another is not possible. A comparison between these scoring systems is only possible after adjusting the total points, the quality and the q uantity of each criterion and component of the scoring system. This ca n done by using a standardized rating scale like the IKDC-score.