GY system(Double Spike Plate:DSP)を用いた膝前十字靱帯再建術の検討

抄録

We have been using double spike plate (DSP) for fixation in anterior cruciate ligament (ACL) reconstruction using hamstrings since March 2000. A set force of 80N in male and 60N in female was applied for graft tension with the knee in full extension. We compared this procedure (DSP group; 52 patients) with manual maximum fixation using the Post screw before March 2000 (Post group; 102 patients). The purpose of this study was to clarify the clinical results of this procedure. The DSP group was significantly better than the Post group in the JOA score, Lachman and Jerk test (P<0.05). The average side-to-side anterior laxity difference with the KT-2000 arthrometer was 1.7mm in the DSP group, and 2.0mm in the Post group. No significant difference in the quadriceps and hamstring muscle strength were observed between the two groups with the Biodex machine and range of motion. There were no patients who resulted in contracture or graft failure, so the initial strength applied for the graft was not set high in this procedure.