The Effect of Pulling Angle on Rotator Cuff Mechanical Properties in a Canine In Vitro Model.
The Effect of Pulling Angle on Rotator Cuff Mechanical Properties in a Canine In Vitro Model.
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DOI：
10.3390/bioengineering10050599
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发表时间：
2023-05-17
影响因子：
4.6
通讯作者：
Zhao, Chunfeng
中科院分区：
文献类型：
--
作者：
Liu, Qian;Qi, Jun;Zhu, Weihong;Thoreson, Andrew R.;An, Kai-Nan;Steinmann, Scott P.;Zhao, Chunfeng
本研究的目的是在犬的体外模型上，观察牵拉角度对完整冈下肌腱或改良Mason-Allen技术修复的完整冈下肌腱的零时力学性能的影响。共采集了36个犬肩标本。20个完整标本随机分为功能拉力组(135°)和解剖拉力组(70°)，每组10个。其余16条冈下肌腱从止点处切断，用改良Mason-Allen法修复，然后随机分为功能牵拉组和解剖牵拉组(n=8)。对所有试件进行从加载到失效的测试。功能性牵拉完整肌腱的极限破坏载荷和极限应力显著低于解剖牵拉肌腱(1310.2±167.6 N比1687.4±228.2 N，p=0.0005：55.6±8.4 Mpa比67.1±13.3 Mpa，p=0.0334)。对于改良Mason-Allen技术修复的肌腱，功能拉力组和解剖拉力组的极限断裂载荷、极限应力和肌腱刚度均无显著差异。在犬肩关节模型中，牵拉角度的变化对肩袖肌腱的生物力学性能有显著影响。与解剖拉位相比，功能性拉位的完整冈下肌腱断裂时的负荷较低。这一结果表明，在功能性拉力作用下，肌腱纤维之间的载荷分布不均匀，可能是肌腱发生撕裂的原因。然而，使用改良的Mason-Allen技术修复肩袖后，这种力学特征并不表现出来。
The objective of this study was to examine the effect of pulling angle on time-zero mechanical properties of intact infraspinatus tendon or infraspinatus tendon repaired with the modified Mason-Allen technique in a canine model in vitro. Thirty-six canine shoulder samples were used. Twenty intact samples were randomly allocated into functional pull (135°) and anatomic pull (70°) groups (n = 10 per group). The remaining sixteen infraspinatus tendons were transected from the insertion and repaired using the modified Mason-Allen technique before being randomly allocated into functional pull or anatomic pull groups (n = 8 per group). Load to failure testing was performed on all specimens. The ultimate failure load and ultimate stress of the functional pulled intact tendons were significantly lower compared with anatomic pulled tendons (1310.2 ± 167.6 N vs. 1687.4 ± 228.2 N, p = 0.0005: 55.6 ± 8.4 MPa vs. 67.1 ± 13.3 MPa, p = 0.0334). For the tendons repaired with the modified Mason-Allen technique, no significant differences were observed in ultimate failure load, ultimate stress or stiffness between functional pull and anatomic pull groups. The variance of pulling angle had a significant influence on the biomechanical properties of the rotator cuff tendon in a canine shoulder model in vitro. Load to failure of the intact infraspinatus tendon was lower at the functional pulling position compared to the anatomic pulling position. This result indicates that uneven load distribution across tendon fibers under functional pull may predispose the tendon to tear. However, this mechanical character is not presented after rotator cuff repair using the modified Mason-Allen technique.
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DOI：
10.1016/j.clinbiomech.2015.06.020
发表时间：
2015-11
期刊：
Clinical biomechanics (Bristol, Avon)
影响因子：
--
作者：
Ji X;Chen Q;Thoreson AR;Qu J;An KN;Amadio PC;Steinmann SP;Zhao C
通讯作者：
Zhao C
影响因子：
2.4
作者：
Miller, Kristin S.;Connizzo, Brianne K.;Soslowsky, Louis J.
通讯作者：
Soslowsky, Louis J.
影响因子：
4.8
作者：
Mihata, Teruhisa;Watanabe, Chisato;Kinoshita, Mitsuo
通讯作者：
Kinoshita, Mitsuo
影响因子：
4.8
作者：
Rossbach, Bjoern P.;Guelecyuez, Mehmet F.;Mueller, Peter E.
通讯作者：
Mueller, Peter E.
影响因子：
3
作者：
Rothrauff, Benjamin B.;Smith, Catherine A.;Musahl, Volker
通讯作者：
Musahl, Volker