Muscle performance after anterior cruciate ligament reconstruction.
We measured muscle strength in 36 patients after anterior cruciate ligament (ACL) reconstruction with autogenous bone-patellar tendon-bone graft. Quadriceps and hamstring isokinetic strength was assessed during concentric contraction at 60 and 180 degrees /s and was measured at 1, 6, 12 and 24 months postoperatively. At 24 months quadriceps muscle strength had recovered to approximately 90% of the level of the uninvolved side, both at 60 and 180 degrees /s. In contrast, hamstring muscle strength had already recovered to approximately 90% at 6 months. Age, gender, activity level, and anterior tibial laxity did not affect the muscle performance. However, the recovery of muscle strength was delayed in patients with anterior knee pain.
Kobayashi
A
A
Department of Orthopaedic Surgery, Faculty of Medicine, Gunma University, 3-39-22 Showa-machi, 371-8511, Maebashi-shi, Gunma-ken, Japan. kobayang@d2.dion.ne.jp
Higuchi
H
H
Terauchi
M
M
Kobayashi
F
F
Kimura
M
M
Takagishi
K
K
D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000503:physiopathology* / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D016025:Bone Transplantation / Q000379:methods; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000503:physiopathology / Q000601:surgery; D007719:Knee Joint / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000503:physiopathology*; D017847:Patellar Ligament / Q000637:transplantation; D011237:Predictive Value of Tests; D020127:Recovery of Function; D016896:Treatment Outcome