Experience with the Leeds-Keio artificial ligament for anterior cruciate ligament reconstruction

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Artificial anterior ligament reconstruction was very popular between 1975 and 1990. Recently, disappointing results have been published. We reviewed 68 patients who had received an artificial anterior cruciate ligament reconstruction 1 year and 5 years after their operation. The Leeds-Keio device was used as a scaffold. The ligament failed in 32 knees. This was arthroscopically confirmed in 20 cases. The other 12 knees were grossly unstable, with a reappearance of pivot shift, anterior drawer sign and high KT 1000. Generally, we found a marked increase in laxity over the period of investigation. Several biopsies were taken during arthroscopic examination of suspected ruptures. They showed lack of collagenisation and ingrowth.