Tension loss of a bovine calcaneus tendons


  • Sergio Rocha Piedade Universidade Estadual de Campinas, Faculdade de Ciências Médicas, Campinas, SP
  • Silvestre Rodrigues Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP
  • Alessandra Carvalho Tavares Rocha Piedade
  • Martha Maria Mischan Universidade Estadual Paulista, Instituto de Biociências, Botucatu, SP
  • Inácio Maria Dal Fabbro Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP




Surgery veterinary, Tendons, Graft, Anterior cruciate ligament


Lesion of the anterior cruciate ligament (ACL) in the knee is a problem that affects animals as well as humans and may evolve with joint instability that is often symptomatic and incapacitating. The main option for ligament substitution is the autologous tendon graft. The graft undergoes tensioning during ACL reconstructive surgery to reestablish the normal laxity of the ACL- deficient knee. Although graft tensioning plays a fundamental role in postoperative clinical evolution, ideal tensioning levels have not been established in the literature. Therefore, graft elongation that may occur over time is still one of the main reasons for ligament reconstruction failure. In this study, ten bovine calcaneus tendons underwent two successive assays of physiological tensioning for a maximum deformation of 2.5% of the initial tendon length, maintained for 600s with force (N) values recorded at zero time (initial), 300s and 600s. At the end of the first assay, the tendon returned to its initial length and was maintained at rest for 300s and then the next tensioning assay was initiated, repeating the previous procedure. Statistical analysis revealed that tendon elongation is more pronounced during the initial 300s, reflecting a more accentuated decline in the tension values of the graft. Therefore, 300s after tensioning and fixing the graft, the surgeon can assess with more precision if the tensioning level was adequate.


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How to Cite

Piedade SR, Rodrigues S, Piedade ACTR, Mischan MM, Fabbro IMD. Tension loss of a bovine calcaneus tendons. Braz. J. Vet. Res. Anim. Sci. [Internet]. 2008 Apr. 1 [cited 2024 Jul. 15];45(2):109-15. Available from: https://www.revistas.usp.br/bjvras/article/view/26707