Burn and Plastic Surgery Department, Shenyang 242 Hospital, No.3 Leshan Road, Shenyang, 110000, China.
Graduate School, Shenyang Medical College, No.5 South Qi West Road, North Huanghe Street, Shenyang, 110000, China.
Sci Rep. 2023 Mar 9;13(1):3922. doi: 10.1038/s41598-023-30791-w.
The current study explored the slide-lengthening potentials of double and triple hemisections and the biomechanical effects of different inter-hemisection distances. Forty-eight porcine flexor digitorum profundus tendons were divided into double- and triple-hemisection groups (Groups A and B) and a control group (Group C). Group A was divided into Group A1 (distance between hemisections were the same as Group B) and Group A2 (distance between hemisections corresponded to the greatest distance between hemisections in Group B). Biomechanical evaluation, motion analysis, and finite element analysis (FEA) were performed. Failure load of intact tendon was significantly highest among groups. When the distance was 4 cm, the failure load of Group A increased significantly. When the distance between the hemisections was 0.5 or 1 cm, the failure load of Group B was significantly lower than Group A. Tendon elongation and failure load of Group B were significantly lower than those in Group A when the greatest distance between hemisections was the same. Consequently, Double hemisections had a similar lengthening ability to that of triple hemisections with the same distance, but better when the distances between extreme hemisections matched. However, the driving force for the initiation of lengthening may be greater.
本研究探讨了双半腱和三重半腱的延长潜力，以及不同的半腱间距离的生物力学效应。将 48 个猪的趾深屈肌腱分为双半腱和三重半腱组（A 组和 B 组）和对照组（C 组）。A 组分为 A1 组（半腱间距离与 B 组相同）和 A2 组（半腱间距离与 B 组的最大半腱间距离相对应）。进行生物力学评估、运动分析和有限元分析（FEA）。完整肌腱的失效负荷在各组中最高。当距离为 4cm 时，A 组的失效负荷显著增加。当半腱间距离为 0.5 或 1cm 时，B 组的失效负荷显著低于 A 组。当最大半腱间距离相同时，B 组的肌腱伸长和失效负荷明显低于 A 组。因此，双半腱具有与相同距离的三重半腱相似的延长能力，但当极端半腱之间的距离相匹配时，效果更好。然而，延长启动的驱动力可能更大。
