Rodarte Rodrigo Ribeiro Pinho, Guimarães João Antônio Matheus, Duarte Brenno Tavares, Kenedi Paulo Pedro, Pinho William Ribeiro
Hospital Central da Polícia Militar, Rio de Janeiro, RJ, Brazil.
Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brazil.
Acta Ortop Bras. 2022 Aug 26;30(4):e236261. doi: 10.1590/1413-785220223004e236261. eCollection 2022.
The knee has shown a significant increase in the frequency of injury due to sports practice. This increase and the improvement of surgical techniques of ligament reconstruction have led to a greater indication of this treatment to achieve a function close to normal.
To conduct a preliminary analysis of the ligament behavior.
The study consisted of the validation of an anatomical model of the pig, in which five models were subjected to mechanical tests. The data on the loads of the in situ model and the strains of the posterior cruciate ligament were collected.
The analysis of the tensile load showed, at first, a nonlinear increase in stresses. Subsequently, the pig's knee showed a relatively linear intermediate response until failure around 1,200 N. Strain time showed a response of the posterior cruciate ligament, which also has a relatively linear response.
We observed a linear behavior in the range of 1,000 to 5,000 microstrains in the strain of the posterior cruciate ligament. We suggest further studies to understand knee ligaments regarding their behavior in their function.
由于体育活动，膝关节损伤的频率显著增加。这种增加以及韧带重建手术技术的改进，使得这种治疗方法更常用于实现接近正常的功能。
对韧带行为进行初步分析。
该研究包括对猪的解剖模型进行验证，其中五个模型接受了力学测试。收集原位模型的载荷数据和后交叉韧带的应变数据。
拉伸载荷分析首先显示应力呈非线性增加。随后，猪膝关节在达到约1200 N失效前呈现相对线性的中间响应。应变-时间显示了后交叉韧带的响应，其也具有相对线性的响应。
我们观察到后交叉韧带应变在1000至5000微应变范围内呈线性行为。我们建议进一步开展研究，以了解膝关节韧带在其功能中的行为。
