scholarly journals The effect of physiotherapy on knee joint extensor and flexor muscle strength after anterior cruciate ligament reconstruction using hamstring tendon

2011 ◽  
Vol 17 (1) ◽  
pp. CR35-CR41 ◽  
Author(s):  
Andrzej Czamara ◽  
Wieslaw Tomaszewski ◽  
Tadeusz Bober ◽  
Bartosz Lubarski
Keyword(s):  
Anterior Cruciate Ligament ◽  
Muscle Strength ◽  
Knee Joint ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Hamstring Tendon ◽  
Flexor Muscle ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate

Influence of Medial Hamstring Tendon Harvest on Knee Flexor Strength after Anterior Cruciate Ligament Reconstruction

2003 ◽  
Vol 31 (4) ◽  
pp. 521-529 ◽  
Author(s):  
Toshiyuki Tashiro ◽  
Hisashi Kurosawa ◽  
Akira Kawakami ◽  
Atsuhiko Hikita ◽  
Naoshi Fukui
Keyword(s):  
Anterior Cruciate Ligament ◽  
Muscle Strength ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Knee Flexion ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Hamstring Tendon ◽  
Hamstring Muscle ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate

Background The advantages of hamstring tendon autografts for anterior cruciate ligament reconstruction are well known; however, concerns have arisen regarding the influence of hamstring tendon harvest on postoperative weakness in knee flexion. Purpose To evaluate the influence of hamstring tendon harvest on knee flexion strength in patients undergoing anterior cruciate ligament reconstruction. Study Design Prospective randomized study. Methods Ninety patients were randomly assigned at surgery to undergo anterior cruciate ligament reconstruction with either a semitendinosus tendon autograft or a semitendinosus and gracilis tendon autograft. Quadriceps and hamstring muscle strength was tested before surgery and at 6, 12, and 18 months after surgery. Results There was no significant difference in clinical results between the groups and neither group showed a significant decrease in isokinetic hamstring muscle strength. However, when the subjects’ knees were at positions of 70° or more of flexion, both isokinetic and isometric measurements revealed a significant decrease in hamstring muscle strength in both groups. The strength in the group with semitendinosus and gracilis tendons was considerably less than that in the group with semitendinosus tendon alone at 18 months. Conclusions Tendon harvest causes significant weakness of hamstring muscle strength at high knee flexion angles, but such weakness can be minimized if the gracilis tendon is preserved.

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