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Tendon to Bone Healing: Differences in Biomechanical, Structural, and Compositional Properties Due to a Range of Activity Levels

机译:肌腱到骨的愈合:由于一系列活动水平,生物力学,结构和成分特性的差异

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摘要

Little knowledge exists about the healing process of the tendon to bone insertion, and hence little can be done to improve tissue healing. The goal of this study is to describe the healing of the supraspinatus tendon to its bony insertion under a variety of loading conditions. Tendons were surgically detached and repaired in rats. Rat shoulders were then immobilized, allowed cage activity, or exercised. Shoulders that were immobilized demonstrated superior structural (significantly higher collagen orientation), compositional (expression of extracellular matrix genes similar to the uninjured insertion), and quasilinear viscoelastic properties (A = 0.30 ± 0.10 MPa vs. 0.16 ± 0.08 MPa, B = 17.4 ± 2.9 vs. 15.1 ± 0.9, and τ_2 = 344 ± 161 s vs. 233 ± 40 s) compared to those that were exercised, contrary to expectations. With this knowledge of the healing response, treatment modalities for rotator cuff tears can be developed.
机译:关于腱到骨插入的愈合过程的知识很少,因此改善组织愈合的工作很少。这项研究的目的是描述在各种负荷条件下腕上肌腱对其骨插入的愈合。肌腱通过手术分离并在大鼠中修复。然后将大鼠肩膀固定,使其保持笼状活动或进行锻炼。固定的肩膀表现出出众的结构性(胶原蛋白取向明显提高),组成性(与未受伤的插入相似的细胞外基质基因的表达)和准线性粘弹性质(A = 0.30±0.10 MPa vs. 0.16±0.08 MPa,B = 17.4±与练习相比,分别为2.9 vs. 15.1±0.9和τ_2= 344±161 s vs. 233±40 s。有了对愈合反应的了解,就可以开发出肩袖撕裂的治疗方法。

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