[Importance of measuring stability and function in knee ligament surgery]

To compare results in knee ligament surgery between different surgeons and between different centers, too, is difficult. We investigated if an improvement can be achieved by using easy to handle methods of measurement. The long-term results of 180 patients who underwent ACL surgery between 1983 and 1986 (n = 191) were evaluated. For international comparing of our results we used the scoring of the OAK (Orthopädische Arbeitsgemeinschaft Knie). In addition stability was measured by use of the KT-1000 arthrometer and function by "one leg hop for distance". Together with different usual functional tests those two methods were investigated for being comparable, practicable, and relevant. We found that both measurements came up to these conditions. We succeeded in rating the patients' result by measuring KT-1000 and one leg hop for distance. Examination after knee ligament surgery has to contain these two parameters for international comparison.