Posture Stability Evaluation Using Static Posturography in Patients after Cruciate Ligament Reconstruction
L. Kubisza, b, H. Wernera, M. Bosekc and W. Weissd
aDepartment of Biophysics, Poznań University of Medical Sciences, Poznań, Poland
bHigher Vocational State School, Piła, Poland
cDepartment of Biophysics, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Poland
dOrthopedic and Trauma Ward Centre for Complex Sport Injures Treatment, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Poland
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Ligament reconstruction is one of the surgical methods for treatment of anterior cruciate ligament injury. The main purpose of rehabilitation after surgical ligament reconstruction is to obtain maximal efficiency of knee joint, their stability and appropriate lower limbs encumbrance. Static posturography is one of the control, rehabilitative and diagnostic tools in such treatment. The purpose of the study was to evaluate the posture stability differences between healthy people and patients after anterior cruciate ligament reconstruction. The centre of pressure sway was registered using the standard posturography platform: (Pro-med). During the test, the subject stood freely with eyes open and closed. In order to determine the stability of the subject, the average velocity of the centre of pressure sway, and the average accretion rate of surface area encircled by centre of pressure, a mean radius of centre of pressure and amount of its displacement were calculated. Parameters measured for the eyes closed posture were significantly greater for people after anterior cruciate ligament reconstruction, while differences between groups for eyes open test were statistically insignificant. This indicates impairment of the somatosensoric posture control system. It should be noted that selected stability indicators: an average velocity of the centre of pressure sway, its anterior-posterior and mediolateral components, a mean radius of centre of pressure and a mean accretion rate of surface area encircled by centre of pressure varied in both groups.
DOI: 10.12693/APhysPolA.119.957
PACS numbers: 87.19.lu, 87.19.R-, 87.19.U-