Excursion Resistance between Tendon and Pulley after Reconstructicn of Flexor Tendon and Pulley

用不同类型的肌腱模拟肌腱移植或滑轮重建，评估肌腱与滑轮之间的偏移阻力。滑突内肌腱（即指浅屈肌和指固有伸肌在伸肌网膜下的部分）比滑突外肌腱（即指共伸肌在伸肌网膜和掌长肌远端的部分）产生更小的偏移阻力。趾共伸肌腱的滑膜内部分的抗偏移性明显高于同一肌腱的滑膜外部分。注射透明质酸后，肌腱的滑动阻力明显降低，尤其是滑膜外肌腱。注射羟基磷灰石后，滑膜外肌腱的偏移阻力与对照组无显著差异。本研究结果表明，给药透明质酸可能会改善屈肌腱移植的临床结果。

Different kinds of tendons were used to simulate a tendon graft or pulley reconstruction, and excursion resistance between tendon and pulley were evaluated.Intrasynovial tendons, (i.e., flexor digitorum superficialis and the portion of the extensor indicis proprius beneath the extensor retinaculum) produced less excursion resistance than extrasynovial tendons, (i.e., the portion of the extensor digitolum communis distal to the extensor retinaculum and palmaris longus). The excursion resistance of the intrasynovial portion of the extensor digitolum communis tendon was significantly higher than that of the extrasynovial portion of the same tendon.The gliding resistances of tendons were significantly decreased after administration of HA, especially in the extrasynovial tendons. Excursion resistances of the extrasynovial tendons after administration of HA were not significantly different from the control values. The results of this study suggest that the administration of HA may possibly to improve the clinical outcome of the flexor tendon graft.