The Correlation Analysis Between Balance Function And Its Related Factors In Elderly Patients With Knee Osteoarthritis

Objective:Comprehensive clear of factors related to balance function in elderly patients knee osteoarthritis.Methods:32 patients with knee osteoarthritis who aged 60 or older were collect Social Demographic Information, the Western Ontario and McMaster Universities Osteoarthritis Index, Lequesne's Index, the total score of the MOS Item Short from Health Survey(SF-36) and tested on them, test methods include response time tests, isokinetic strength tests, isometric strength tests, propreoceptive tests, static postural stability tests, limits of stability tests, static and dynamic fall risk tests.Results:The correlation between static postural stability test results and body mass index, image classification and the number of chronic diseases which with great impact on the health or potential life-threatening, respectively (p<0.05 or p<0.001); The correlation between postural stability limit test results and the course of disease, pain score of WOMAC, stiffness score of WOMAC, respectively (p<0.05 or p<0.001); The correlation between static postural stability and postural stability limit test results and age, reaction time, total response time, the average reposition error of lower extremities, the coefficient sum of the medium-to-high frequencies on postural sway in lower extremities, extensor and flexor peak torque of lower extremities, the most vigorous power and the average power of lower extremities, Lequesne's functional score, the number of bone and joint diseases which affect on balance of lower extremities, with crutches, respectively (p<0.05 or p＜0.001); The positive correlation between postural stability limit test results and the total score of SF-36(p<0.05); The correlation between dynamic fall risk index and age, reaction time, the total response time, the course of disease, the average reposition error of lower extremities, the most vigorous power and the average power of lower extremities, Lequesne's functional score, respectively (p<0.05).Conclusion:With age increase and reaction decline, the elderly patients with knee osteoarthritis will show a decline in lower extremities joint mobility and reduced static postural stability and decreased the ability to shift the focus, which result from their impaired proprioception, decreased muscle strength of lower extremity and reduced movement control and coordination ability, and the patients with longer course of disease will be prone to fall. In addition, the patients with lower body mass index, more severe radiological grade and more of the number of chronic diseases which with great impact on the health or potential life-threatening will be worse in static postural stability; The patients suffered from another bone and joint diseases which effect on balance of lower extremities or with crutches will show a reduced static postural stability and decreased the ability to shift the focus; The patients with more severe knee joint pain and stiffness will be worse in ability to shift the focus, and decreased ability to shift the focus will be have a negative impact on their physical function and quality of life.