Morphologic Characteristics and Strength of the Hamstring Muscles Remain Altered at 2 Years After Use of a Hamstring Tendon Graft in Anterior Cruciate Ligament Reconstruction

Conclusion:
The muscle-tendon properties of the semitendinosus and gracilis are substantially altered after harvesting, and these alterations may contribute to knee flexor weakness in the surgical limb. These deficits are more pronounced in knees with tendons that do not regenerate and are only partially offset by compensatory hypertrophy of other hamstring muscles.

Source: The American Journal of Sports Medicine - September 29, 2016 Category: Sports Medicine Authors: Konrath, J. M., Vertullo, C. J., Kennedy, B. A., Bush, H. S., Barrett, R. S., Lloyd, D. G. Tags: Biomechanics, general, Knee ligaments, ACL, Imaging, magnetic resonance, Medical aspects of sports Source Type: research