Korean J Sports Med.  2019 Sep;37(3):75-83. 10.5763/kjsm.2019.37.3.75.

Effects of Reduced Plantar Cutaneous Sensation on Static Postural the Kinematic Strategy Control in Individuals with or without Chronic Ankle Instability

Affiliations
  • 1Department of Physical Education, Yonsei University, Seoul, Korea. sylee1@yonsei.ac.kr
  • 2Yonsei Institute of Sports Science and Exercise Medicine (YISSEM), Yonsei University, Seoul, Korea.

Abstract

PURPOSE
To investigate the alteration of lower extremity movement during maintaining balance test with their eyes closed in chronic ankle instability (CAI) patients compared to healthy group with and without plantar cutaneous sensation.
METHODS
Ten healthy volunteers (age, 23.40±2.22 years; height, 165.42±6.67 cm; weight, 60.93±13.42 kg) and 10 CAI patients (age, 23.90±2.56 years; height, 166.89±10.50 cm; weight, 67.43±12.96 kg), were recruited. Subjects immersed both feet in an ice water for 10 minutes and performed three trials of a single-leg stance balance test with their eyes closed while standing on a force plate for 10 seconds.
RESULTS
CAI group showed increased knee flexion, reduced knee external rotation, and hip internal rotation compared to the healthy group from single-limb stance with eyes closed after diminished plantar cutaneous sensation. However, there was no significant interaction between group and time.
CONCLUSION
These findings indicate that the postural kinematic analyses revealed that individuals with CAI used different strategy of controlling their lower extremities, which alters transverse plane motion of hip and knee compared to the healthy group in order to compensate for their ankle deficits after freezing the plantar cutaneous.

Keyword

Chronic ankle instability; Plantar cutaneous sensation; Static postural control
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