Volume 22, Issue 3 (summer 2016)                   Intern Med Today 2016, 22(3): 193-199 | Back to browse issues page


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1- Technical Orthopedic Department, Rehabilitation Sciences Faculty, Isfahan University of Medical Sciences, Isfahan, Iran
2- Department of Advanced Technologies in Medicine, Biomedical Engineering Faculty, Amirkabir University of Technology, Tehran, Iran
3- Technical Orthopedic Department, Rehabilitation Sciences Faculty, Isfahan University of Medical Sciences, Isfahan, Iran , mohammadsalahi68@yahoo.com
Abstract:   (4199 Views)

Aims: Being prevalent in the more than 40 years old persons, the knee osteoarthritis is one of the main factors in the function system failure mainly affecting their life. There is a type of instability in the persons with knee osteoarthritis, which is an increase in the domain and frequency of body pressure center. The aim of the present study was to compare the standing stability parameters in persons with knee osteoarthritis and healthy persons.   

Instrument & Methods: In this case-control, 15 patients with knee osteoarthritis referred to the physiotherapy clinic of the rehabilitation center and Al-Zahra hospital were studied in the muscle-skeletal research center of Isfahan University of Medical Sciences in 2015. The subjects were selected via stratified sampling method. As control group, 15 healthy persons were also studied in Isfahan. Total path length and the domain and frequency of pressure center in different directions were measured to assess the stability. Data was analyzed by SPSS 19 software using descriptive statistics and paired T test.

Findings: There were increases in the mean movement domain and the frequency of pressure center in the anterior-posterior and the internal-external directions, as well as in the total path proceeded by the pressure center in the internal-external direction, in the persons with knee osteoarthritis than the healthy persons (p<0.05). Nevertheless, there was no significant difference in the mean total path proceeded by the pressure center in the anterior-posterior direction (p>0.05).

Conclusion: Standing stability and balance in persons with knee osteoarthritis decreases compared to healthy persons.

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Type of Study: Original | Subject: Orthopedics and Biomechanics
Received: 2015/08/25 | Accepted: 2016/02/10 | Published: 2016/05/24

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