Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (37): 6887-6890.doi: 10.3969/j.issn.1673-8225.2011.37.012

Previous Articles     Next Articles

Biomechanical effect of posterior cruciate ligament rupture on the collateral ligaments

Yu Fang, Zhou Yi-zhao, Li Kang-hua, Li Yu-sheng, Gao Shu-guang, Zhang Can   

  1. Institute of Orthopedics, Xiangya Hospital of Central South University, Department of Orthopedics, Xiangya Hospital of Central South University, Changsha   410008, Hunan Province, China
  • Received:2011-03-29 Revised:2011-06-20 Online:2011-09-10 Published:2011-09-10
  • Contact: Li Kang-hua, Professor, Institute of Orthopedics, Xiangya Hospital of Central South University, Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China Lkh8738@gmail.com
  • About author:Yu Fang☆, Doctor, Institute of Orthopedics, Xiangya Hospital of Central South University, Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China yukang7171930@ yahoo.com.cn

PDF

366

Abstract:

BACKGROUND: At present, most studies on posterior cruciate ligament (PCL) rupture focus on cartilage and posterolateral structures as well as knee joint laxity.
OBJECTIVE: To observe the biomechanical effects of posterior cruciate ligament (PCL) rupture on medial (MCL) and lateral collateral ligament (LCL).
METHODS: The strain in the MCL and LCL of 12 knees from young cadavers was measured at different angles (0°, 30°, 60°and 90°) under 200 N loading. The PCL of all knees was resected for the same measurements.
RESULTS AND CONCLUSION: At the angles of 30°-90°, the strains of PCL intact group and PCL injury group increased as the angle increased. Under 200 N loading after PCL rupture, at the angles of 0° and 30°, the strains of MCL midpoint were not significantly increased (P  > 0.05), while at the angles of 60° and 90° , the strains were significantly increased (P < 0.05). At the angels of 0° and 30°, the strains of LCL midpoint of PCL rupture knee were still compressive and not significantly increased (P > 0.05) compared with the normal knee. However, at the angels of 60° and 90°, the strains were significantly increased after PCL rupture (P < 0.05). These findings suggest that the complete rupture of PCL does not produce effects on knee joint movement at the angle of 30°, but the effects on MCL and LCL were increased with increased angles.

CLC Number: