Abstract
Purpose To perform the comparative assessment of the mechanical strength of models of semitendinosus and peroneus longus tendon grafts prepared using the GraftLink technique. Materials and methods Tendon material was collected on the base of the Irkutsk Regional Bureau of Forensic Medicine. The main stage of the mechanical strength study of graft models was carried out at the National Research Irkutsk State Technical University, the Department of Strength of Materials, using universal tension testing desk-standing machine Shimadzu AGS-10kNXD. The mechanical strength of graft models of tendon of the semitendinosus and peroneal longus muscles, prepared by a known method (GraftLink technique) was defined. Statistical data processing was carried out using the statistical software Statistica for Windows 10.0 (StatSoft Inc., USA; license holder is the Irkutsk Scientific Center of Surgery and Traumatology). We used a nonparametric method for defining the statistical significance of differences, i.e. the Mann-Whitney test. Differences in the compared groups were considered statistically significant in p < 0.01. Results The mechanical strength of the graft harvested from the semitendinosus muscle tendon according to the known technique averaged out at 351.8 ± 133.0 N, and the mechanical strength of the graft from the half of the peroneus longus tendon, prepared in a known manner, averaged out at 632.4 ± 193.7 N. Statistically significant differences were revealed (p <0.01). Discussion Our study is the only one that shows the results of studying the mechanical strength of allografts prepared by two different techniques. In addition, we identified two phases of the graft rupture, when the free end of the graft being the weakest site of the graft ruptures during the first phase Conclusion The rupture of the graft from the half tendon of the peroneus longus muscle, prepared using the GraftLink technique, occurred at a force of 632.4 ± 193.7 N, which is 1.8 times more than the graft from the semitendinosus muscle prepared using the GraftLink technique.
Highlights
The choice of graft for anterior cruciate ligament (ACL) plasty is still controversial
The purpose of the work is to conduct a comparative assessment of the mechanical strength of graft models from the semitendinosus and long peroneal muscles prepared by a known method (GraftLink technique) under experimental conditions
Determination of mechanical strength of a semitendinosus tendon graft model prepared in a known way (GraftLink technique)
Summary
The choice of graft for anterior cruciate ligament (ACL) plasty is still controversial. Significant disadvantage of taking the above tendon materials for the subsequent formation of grafts is that each of them is an integral part of the para-articular complex responsible for both passive and active stabilization of the joint, and removal of any part of it inevitably leads to partial loss of the biomechanical unity of a complex anatomical formation. An alternative when choosing a tendon material for subsequent formation of an ACL graft can be use of the tendon of the long peroneal muscle. When it is taken, the biomechanics of the knee joint is not affected, since the tendon of the long peroneal muscle is anatomically located in the lower leg, which is extremely important in the rehabilitation period.
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