Characteristics of Cervical Position Sense in Subjects with Forward Head
Posture |
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Authors: | Mi-Young Lee Hae-Yong Lee Min-Sik Yong |
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Institution: | 1) Department of Physical Therapy, College of Health and Therapy, Daegu Haany University, Republic of Korea;2) Department of Rehabilitation Science, Graduate School, Daegu University, Republic of Korea |
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Abstract: | Purpose] The purpose of this study was to investigate the effect of forward head posture
(FHP) on proprioception by determining the cervical position-reposition error. Subjects
and Methods] A sample population was divided into two groups in accordance with the
craniovertebral angle: the FHP group and the control group. We measured the
craniovertebral angle, which is defined as the angle between a horizontal line passing
through C7 and a line extending from the tragus of the ear to C7. The error value of the
cervical position sense after cervical flexion, extension, and rotation was evaluated
using the head repositioning accuracy test. Results] There were significant differences
in the error value of the joint position sense (cervical flexion, extension, and rotation)
between the FHP and control groups. In addition, there was an inverse correlation between
the craniovertebral angle and error value of the joint position sense. Conclusion] FHP is
associated with reduced proprioception. This result implies that the change in the muscle
length caused by FHP decreases the joint position sense. Also, proprioception becomes
worse as FHP becomes more severe.Key words: Forward head posture, Joint position sense, Proprioception |
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