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首页> 外文期刊>Journal of shoulder and elbow surgery >Tensile strength of ligaments after thermal shrinkage depending on time and immobilization: in vivo study in the rabbit.
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Tensile strength of ligaments after thermal shrinkage depending on time and immobilization: in vivo study in the rabbit.

机译：热收缩后韧带的拉伸强度取决于时间和固定性：在兔体内研究。

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摘要

The effects of immobilization on healing collagenous tissue treated with thermal shrinkage are investigated in an in vivo rabbit model. Thermal shrinkage was performed on 45 of 50 medial collateral ligaments in 25 mature New Zealand rabbit knees. In half of the knees, the joints were immobilized. Animals were killed at 0, 3, 6, and 9 weeks postoperatively. Failure loads of ligaments were determined, and morphologic changes were evaluated by electron microscopy. The failure load of shrunken ligaments was significantly lower than that of the intact ligaments on the day of operation (P<.05). Shrunken ligaments reached their highest failure loads in the third week within the first 9 weeks. The immobilized ligaments remained weaker than the mobile group, but this difference was statistically significant only in the ninth week (P<.05). Immobilization seems to have negative effects on the healing ligament. Ideal timing for remobilization is still controversial, and abandoning immobilization protocols for longer than 3 weeks should be considered.
机译：在体内兔模型中研究了固定化对热收缩治疗的胶原蛋白组织愈合的影响。在25个成熟的新西兰兔膝盖中，对50个内侧副韧带中的45个进行热收缩。在膝盖的一半中，关节被固定。术后0、3、6和9周处死动物。确定韧带的破坏载荷，并通过电子显微镜评估形态变化。在手术当天，收缩韧带的破坏载荷明显低于完整韧带（P <.05）。收缩韧带在最初的9周内的第三周达到了最高的破坏负荷。固定的韧带仍然比活动组弱，但这种差异仅在第九周有统计学意义（P <.05）。固定似乎对愈合韧带有负面影响。复员的理想时机仍存在争议，应考虑放弃固定方案超过3周。

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