Effect of patellofemoral joint mobilization in the caudal direction on knee extensor muscle strength

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  • Matsunaga Yoshitaka
    Department of Rehabilitation, Kurashiki Municipal Hospital, 2-39 Kojimaekimae, Kurashiki-shi, Okayama 711-0921, Japan

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  • 膝蓋骨の遠位方向へのモビライゼーションが膝伸展筋力に及ぼす影響

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<p>[Purpose] The purpose of this study was to investigate the effect of patellofemoral joint mobilization in the caudal direction on the arthrokinetic reflex by measuring the knee extensor muscle strength. [Methods] Forty participants without knee joint disease were split into a control group and an experimental group. The knee extensor muscle strengths of individuals in both groups were measured twice, once before and once after a one-hour rest. After the one-hour rest, patellofemoral joint mobilization was performed on the extensor muscles of the experimental group. This group’s muscle strength was then measured again immediately after the mobilization. From these results, the ratio of knee extensor torque to weight and the rate of knee extensor torque increase of each group were calculated and compared. [Result] The experimental group showed a statistically significant difference in the ratio of knee extensor torque to weight (p=0.03) and demonstrated a 11.4 ± 15.1% increase in the rate of knee extensor torque increase whereas the control group showed no significant changes. [Conclusion] The result of this study suggests that inducing the arthrokinetic reflex by means of patellofemoral joint mobilization removes neurogenic inhibition on the quadriceps muscle.</p>

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