Templated freezing: a simple method may increase gripping force of the clamp on the tendon

Journal of Orthopaedic Surgery and Research

H. Yu¹  T. Wang² 

[1] Department of Orthopedics, The First Hospital of China Medical University;Graduate School, Shenyang Medical College;

关键词: Biomechanical phenomena;    Mechanical tests;    Tensile strength, clamping;    Tendon;   

DOI  :  10.1186/s13018-022-03209-y

来源: DOAJ

【 摘 要 】

Abstract Purpose To evaluate the effectiveness of combining a customized mold with frozen conventional clamps against other freezing and non-freezing methods. Methods Forty-five porcine and 45 chicken tendons were evenly divided into five groups (n = 9 + 9/group): control group, non-freezing with gauze placed between tendon and clamp (gauze), non-freezing with suture fixation at tendon ends (suture), freezing with dry ice pocket placed at the clamps (pocket), and freezing using a templated liquid nitrogen clamp with a customized mold (mold). Tension tests were used to measure failure modes and loads. Result Slippage and avulsion were observed in non-freezing groups with significantly lower failure loads compared to freezing methods. With freezing, rupture occurred near the central point only in the mold group. The failure loads for porcine tendons in the mold group were higher (2121.651 ± 73.101 N) than the pocket group (1746.337 ± 68.849 N). The failure loads of chicken tendons in the mold (243.552 ± 15.881 N) and pocket groups (260.647 ± 22.161 N) were not statistically different. Conclusion Freezing clamps represent the better choice for soft tissue clamping. The customized mold method could improve gripping effectiveness.

【 授权许可】

Unknown