Journal of Rehabilitation Research & Development (JRRD)

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Kinematic analysis of symmetric axial trunk rotation on dominant hip

Paul S. Sung, PhD, DHSc, PT; Yoon Hyuk Kim, PhD

Figure 1. Axial rotation test in standing position. (a) Participant stands with both legs fully extended with stick bar and performs axial rotation activities five times repeatedly. During testing, (b) participants maintain standing stability while reflective markers collect kinematic data from three spine axes (X = frontal, Y = sagittal, Z = transverse planes). L1???L5 = lumbar vertebrae 1???5.

Axial rotation of the trunk has been reported as a major risk factor for low back dysfunction. However, a lack of biomechanical investigation exists that explains how twisting is accomplished with simultaneous asymmetric handling between the hip and the lumbar spine. We used a three-dimensional motion analysis to measure movements of the lumbar spine and bilateral hips. Decreased axial trunk range of motion might result in stiffened passive structures of the dominant hip joint. The function of the lumbar spine and hip joint might be altered based on the stiffened dominant side of the hip joint.

Volume 48 Number 8, 2011
   Pages 1029 — 1036

View HTML  ¦  View PDF  ¦  Contents Vol. 48, No. 8
This article and any supplementary material should be cited as follows:
Sung PS, Kim YH. Kinematic analysis of symmetric axial trunk rotation on dominant hip. J Rehabil Res Dev. 2011;48(8):1029-36.
ResearcherID: Paul S. Sung, PhD, DHSc, PT: E-5108-2011

Last Reviewed or Updated  Friday, October 14, 2011 9:40 AM

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