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Effect of the posterior cruciate ligament on posterior stability of the knee in high flexion.
J Biomech. 2004 May; 37(5):779-83.JB

Abstract

Most biomechanical studies of the knee have focused on knee flexion angles between 0 degrees and 120 degrees. The posterior cruciate ligament (PCL) has been shown to constrain posterior laxity of the knee in this range of flexion. However, little is known about PCL function in higher flexion angles (greater than 120 degrees). This in vitro study examined knee kinematics before and after cutting the PCL at high flexion under a posterior tibial load and various muscle loads. The results demonstrated that although the PCL plays an important role in constraining posterior tibial translation at low flexion angles, the PCL had little effect in constraining tibial translation at 150 degrees of flexion under the applied loads.

Authors+Show Affiliations

Li G
Orthopaedic Biomechanics Laboratory, Harvard Medical School, Massachusetts General Hospital and Beth Israel Deaconess Medical Center, Boston, MA, USA. gli1@partners.org
Most E
No affiliation info available
DeFrate LE
No affiliation info available
Suggs JF
No affiliation info available
Gill TJ
No affiliation info available
Rubash HE
No affiliation info available

MeSH

AgedCadaverHumansIn Vitro TechniquesJoint InstabilityKnee JointMiddle AgedMovementMuscle ContractionPosterior Cruciate LigamentPostural BalancePostureRange of Motion, ArticularWeight-Bearing

Pub Type(s)

Comparative Study
Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15047008

Citation

Li, G, et al. "Effect of the Posterior Cruciate Ligament On Posterior Stability of the Knee in High Flexion." Journal of Biomechanics, vol. 37, no. 5, 2004, pp. 779-83.
Li G, Most E, DeFrate LE, et al. Effect of the posterior cruciate ligament on posterior stability of the knee in high flexion. J Biomech. 2004;37(5):779-83.
Li, G., Most, E., DeFrate, L. E., Suggs, J. F., Gill, T. J., & Rubash, H. E. (2004). Effect of the posterior cruciate ligament on posterior stability of the knee in high flexion. Journal of Biomechanics, 37(5), 779-83.
Li G, et al. Effect of the Posterior Cruciate Ligament On Posterior Stability of the Knee in High Flexion. J Biomech. 2004;37(5):779-83. PubMed PMID: 15047008.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of the posterior cruciate ligament on posterior stability of the knee in high flexion. AU - Li,G, AU - Most,E, AU - DeFrate,L E, AU - Suggs,J F, AU - Gill,T J, AU - Rubash,H E, PY - 2003/09/18/accepted PY - 2004/3/30/pubmed PY - 2004/10/27/medline PY - 2004/3/30/entrez SP - 779 EP - 83 JF - Journal of biomechanics JO - J Biomech VL - 37 IS - 5 N2 - Most biomechanical studies of the knee have focused on knee flexion angles between 0 degrees and 120 degrees. The posterior cruciate ligament (PCL) has been shown to constrain posterior laxity of the knee in this range of flexion. However, little is known about PCL function in higher flexion angles (greater than 120 degrees). This in vitro study examined knee kinematics before and after cutting the PCL at high flexion under a posterior tibial load and various muscle loads. The results demonstrated that although the PCL plays an important role in constraining posterior tibial translation at low flexion angles, the PCL had little effect in constraining tibial translation at 150 degrees of flexion under the applied loads. SN - 0021-9290 UR - https://www.unboundmedicine.com/medline/citation/15047008/Effect_of_the_posterior_cruciate_ligament_on_posterior_stability_of_the_knee_in_high_flexion_ DB - PRIME DP - Unbound Medicine ER -