[Development of ligament-bone junction in anterior cruciate ligament reconstruction with the scaffold type polyester artificial ligament (Leeds-Keio) in the dog].
The anterior cruciate ligament (ACL) was reconstructed in sixty mongrel dogs with artificial ligament (Leeds-Keio). The tibial ligament-bone junction was completely removed before the reconstruction in order to investigate the remodelling process of the junction. The dogs were divided into five groups. In all of these the artificial ligament was taut when implanted except for one group which had deliberately a slack reconstruction. In three groups the reconstructions included the use of a strip of infrapatellar synovium alone or with a strip of fascia lata within or outside the artificial ligament. After two, four, twelve and twenty-four weeks, the tibial junction was investigated macroscopically, histologically and by means of microangiography. Newly formed fibrocartilage and functionally aligned collagen were observed in the junction 12 weeks after the initial surgery in all groups, but not in the group with a slack reconstruction. From the results of this study, it was concluded that infrapatellar synovial transfer improved tissue induction in the early stages, and further, the additional use of the fascia speeded up the remodelling process.
Otani
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Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
D000818:Animals; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D004285:Dogs; D008023:Ligaments, Articular / Q000601:surgery*; D019736:Prostheses and Implants; D013977:Tibia / Q000601:surgery*