What is a significant advantage of multiple strands of semitendinosus or semitendinosus-gracilis composite grafts?

The significant advantage of using multiple strands of semitendinosus or semitendinosus-gracilis composite grafts is that they are stronger relative to the normal anterior cruciate ligament (ACL). The strength of the graft is critical for the successful outcome of anterior cruciate ligament reconstruction. When multiple strands are utilized, the resulting graft has increased cross-sectional area and greater tensile strength, which enhances stability and load-bearing capabilities during rehabilitation and eventual return to sport or activity.

Using multiple strands allows for a more robust reconstruction, mimicking the strength and integrity of the native ACL, which is essential in supporting knee stability and function. The greater strength also contributes to a reduced risk of graft failure during the healing process and the demands of physical activity post-surgery. This is particularly important as it can directly influence the overall success of the surgical intervention and the patient's ability to return to their pre-injury level of activity.