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

不同类型的肌腱被用来模拟肌腱移植或滑车重建，并评估了肌腱和滑车之间的漂移阻力。滑膜内肌腱(即指浅屈肌和伸肌支持带下方的固有伸肌)产生的漂移阻力低于滑膜外肌腱(即指总伸肌在支持带伸肌和掌长伸肌的远侧部分)。趾总伸肌腱滑膜内侧的抗滑移能力明显高于同侧肌腱的滑膜外抗力，加入HA后肌腱的抗滑移能力明显降低，尤以滑膜外肌腱的抗滑移能力更强。给药后滑膜外肌腱的漂移阻力与对照组无显著差异。本研究结果提示，HA的应用可能会改善屈肌腱移植的临床效果。

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.