[Effect of anterior cruciate ligament rupture on the strain of medial collateral ligament].
OBJECTIVE
To explore the effect of anterior cruciate ligament (ACL) rupture on the biomechanics of medial collateral ligament (MCL).


METHODS
Six fresh human knee joints were fixed on the self-made fixture and flexed 90 degrees . ACL was divided into a normal group, an anteromedial bundle (AMB) break group, and an ACL complete break group. 800N burden was loaded, and the MCL strain data were compared among the 3 groups.


RESULTS
The MCL strain was significantly increased in the AMB break group and the ACL complete break group than that in the normal group (P<0.05). There was no significant difference in the MCL strain between the AMB break group and the ACL complete break group (P>0.05).


CONCLUSIONS
ACL rupture may cause significant changes in the MCL biomechanics, but the effect of AMB break and ACL complete break on MCL has no significant difference.
Li
Kanghua
K
Orthopedic Institute, Xiangya Hospital, Central South University, Changsha 410008, China.
Xu
Yongqiang
Y
Luo
Ling
L
Li
Peng
P
D000328:Adult; D000070598:Anterior Cruciate Ligament Injuries; D001696:Biomechanical Phenomena; D002102:Cadaver; D012090:Cumulative Trauma Disorders / Q000209:etiology; D006801:Humans; D008297:Male; D017888:Medial Collateral Ligament, Knee / Q000293:injuries / Q000503:physiopathology*; D012421:Rupture / Q000150:complications*; D013180:Sprains and Strains / Q000503:physiopathology*