Abstract
It is recognized that meniscal injury is commonly associated with anterior cruciate ligament (ACL) injury. The purpose of this study was to clarify the characteristics of the meniscal injury after ACL reconstruction, though the antero-posterior stability was good. The subjects were 6 patients (2 men and 4 women) who had an operation for meniscal injury from 2001 through 2004 after ACL reconstruction by a bone-patellar tendon-bone method. The mean age was 28 years (range, 19 to 43 years). The mean period from ACL reconstruction to the operation for meniscal injury was 40 months (range, 10 to 87 months). Five patients continued to play sports after ACL reconstruction. Only 1 patient suffered a non-sport accident at the time of meniscal injury. Four menisci were medial and 2 menisci were lateral. Lachman test was negative in all patients. Pivot shift test was slightly positive in 3 patients. The mean KT-2000 side-to-side difference was 0.1 mm (range, -3.3 to +3.2 mm). Arthroscopically the tension and the synovial coverage of the reconstructed ACL was relatively good in all patients. We supposed that the slight rotational instability and the sports activity after ACL reconstruction caused the meniscal injury.
