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Helical axes of skeletal knee joint motion during running.
J Biomech. 2008; 41(8):1632-8.JB

Abstract

The purpose of this study was to determine the changes in the axis of rotation of the knee that occur during the stance phase of running. Using intracortical pins, the three-dimensional skeletal kinematics of three subjects were measured during the stance phase of five running trials. The stance phase was divided into equal motion increments for which the position and orientation of the finite helical axes (FHA) were calculated relative to a tibial reference frame. Results were consistent within and between subjects. At the beginning of stance, the FHA was located at the midepicondylar point and during the flexion phase moved 20mm posteriorly and 10mm distally. At the time of peak flexion, the FHA shifted rapidly by about 10-20mm in proximal and posterior direction. The angle between the FHA and the tibial transverse plane increased gradually during flexion, to about 15 degrees of medial inclination, and then returned to zero at the start of the extension phase. These changes in position and orientation of FHA in the knee should be considered in analyses of muscle function during human movement, which require moment arms to be defined relative to a functional rotation axis. The finding that substantial changes in axis of rotation occurred independent of flexion angle suggests that musculoskeletal models must have more than one kinematic degree-of-freedom at the knee. The same applies to the design of knee prostheses, if the goal is to restore normal muscle function.

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Publisher Full Text (DOI)

Authors+Show Affiliations

van den Bogert AJ
Department of Biomedical Engineering and Orthopaedic Research Center, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA. bogerta@ccf.org
Reinschmidt C
No affiliation info available
Lundberg A
No affiliation info available

MeSH

AdultBiomechanical PhenomenaHumansKnee JointKnee ProsthesisMaleModels, AnatomicMuscle, SkeletalRange of Motion, ArticularRunning

Pub Type(s)

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

Language

eng

PubMed ID

18457841

Citation

van den Bogert, A J., et al. "Helical Axes of Skeletal Knee Joint Motion During Running." Journal of Biomechanics, vol. 41, no. 8, 2008, pp. 1632-8.
van den Bogert AJ, Reinschmidt C, Lundberg A. Helical axes of skeletal knee joint motion during running. J Biomech. 2008;41(8):1632-8.
van den Bogert, A. J., Reinschmidt, C., & Lundberg, A. (2008). Helical axes of skeletal knee joint motion during running. Journal of Biomechanics, 41(8), 1632-8. https://doi.org/10.1016/j.jbiomech.2008.03.018
van den Bogert AJ, Reinschmidt C, Lundberg A. Helical Axes of Skeletal Knee Joint Motion During Running. J Biomech. 2008;41(8):1632-8. PubMed PMID: 18457841.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Helical axes of skeletal knee joint motion during running. AU - van den Bogert,A J, AU - Reinschmidt,C, AU - Lundberg,A, PY - 2004/11/11/received PY - 2008/03/15/revised PY - 2008/03/17/accepted PY - 2008/5/7/pubmed PY - 2008/11/1/medline PY - 2008/5/7/entrez SP - 1632 EP - 8 JF - Journal of biomechanics JO - J Biomech VL - 41 IS - 8 N2 - The purpose of this study was to determine the changes in the axis of rotation of the knee that occur during the stance phase of running. Using intracortical pins, the three-dimensional skeletal kinematics of three subjects were measured during the stance phase of five running trials. The stance phase was divided into equal motion increments for which the position and orientation of the finite helical axes (FHA) were calculated relative to a tibial reference frame. Results were consistent within and between subjects. At the beginning of stance, the FHA was located at the midepicondylar point and during the flexion phase moved 20mm posteriorly and 10mm distally. At the time of peak flexion, the FHA shifted rapidly by about 10-20mm in proximal and posterior direction. The angle between the FHA and the tibial transverse plane increased gradually during flexion, to about 15 degrees of medial inclination, and then returned to zero at the start of the extension phase. These changes in position and orientation of FHA in the knee should be considered in analyses of muscle function during human movement, which require moment arms to be defined relative to a functional rotation axis. The finding that substantial changes in axis of rotation occurred independent of flexion angle suggests that musculoskeletal models must have more than one kinematic degree-of-freedom at the knee. The same applies to the design of knee prostheses, if the goal is to restore normal muscle function. SN - 0021-9290 UR - https://www.unboundmedicine.com/medline/citation/18457841/Helical_axes_of_skeletal_knee_joint_motion_during_running_ DB - PRIME DP - Unbound Medicine ER -