Contribution of the Multifidus Muscle for Control of Upright Posture in Subjects with Spina Bifida Occulta

in Journal of Sport Rehabilitation
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Context:

The multifidus muscle plays a role in controlling lumbosacral position and postural sway. One of its attachment sites is the exact site of spina bifida occulta (SBO).

Objective:

To investigate the role of the muscle for postural control in SBO.

Design:

Cross-sectional cohort.

Participants:

Eighty subjects with SBO (38 in minor; 42 in major) and controls.

Interventions:

N/A.

Main Outcome Measures:

Subjects stood upright on a platform at 0° and on an inclined surface (10° and 20°) with feet in plantarflexion/dorsiflexion, together with eyes open and closed. The platform system measured posture to obtain sway area and sway mean for statistics.

Results:

Upon sway area/mean, the group differences of major/minor SBO vs. control were all significant. Sway means of minor SBO were lower than those of major SBO at corresponding inclined degrees.

Conclusions:

Subjects with SBO demonstrated increased sway as compared to controls.

Shin-Tsu Chang, Ming-Fu Hsieh, Liang-Cheng Chen, Heng-Yi Chu, Cheng-Chiang Chang, and Kao- Chung Tsai are with the Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine and Chih-Hung Ku is with the School of Public Health, all at the National Defense Medical Center, Taipei 114, Taiwan.