膝蓋腱部分切除が膝伸展機構に与える影響について : 家兎を用いた実験的研究

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Background : The knee ligament injury occurs in a wide range of sports activities. Above all, anterior cruciate ligament (ACL) injury will cause severe knee instability, and often needs surgical treatment such as primary repair or ligament reconstruction. In recent years, the ligament reconstruction has become the main surgical treatment for the ALC injury. We have performed ACL reconstruction using autogenous patellar tendon with both bone ends (simply called BTB as abbreviated from bone-tendon-bone), which is now recognized as "Gold Standard of the ALC reconstruction". However, it is well known that the harvest of BTB often induces weakness and atrophy of the muscle, and which becomes a big problem in sports activities especially for the athletes. Methods : In order to investigate the influence of harvesting BTB for the knee extension mechanism, an experimental study was performed with Japanese white rabbits by resecting central 1/3 of patellar tendon in longitudinal direction. Jump power, tensile strength of the patellar tendon, elasticity of the patellar tendon, and muscle atrophy in the quadricepsfemoris were evaluated, and histological observation was also made on the patellar tendon and the rectus-femoris muscle Results : As compared with the other side, the decrease of the jump power was existed, but muscle atrophy was not observed in the BTB harvested side. The significant deterioration of the tensile strength was not observed, but hyperplasia of scar tissue was found, and the elasticity of the patellar tendon was decreased in the BTB harvested side. Conclusion : It is considered that decrease of the jump power was caused by the change of the neuromuscular function as the result of the decreased elasticity of the muscle due to hyperplasia of scar tissue in the patellar tendon.
愛知医科大学の論文
2007-03-15

膝蓋腱部分切除が膝伸展機構に与える影響について : 家兎を用いた実験的研究

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