The relationship between Knee Injury and Osteoarthritis Outcome Score (KOOS) and Timed Up and Go test in patients with s
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SHORT COMMUNICATION
The relationship between Knee Injury and Osteoarthritis Outcome Score (KOOS) and Timed Up and Go test in patients with symptomatic knee osteoarthritis Feride Sabirli • Nurdan Paker • Derya Bugdayci
Received: 9 February 2012 / Accepted: 23 August 2012 Ó Springer-Verlag 2012
Abstract Both self-reported and physical performance tests are used as outcome measures in knee osteoarthritis (OA). The aim of this study is to investigate the relationship between Knee Injury and Osteoarthritis Outcome Score (KOOS) and Timed Up and Go (TUG) test in the patients with symptomatic knee OA. Eighty-nine patients with symptomatic knee OA who admitted to the outpatient clinic of the hospital were included in the study. All patients had bilateral medial tibiofemoral knee OA. After physical examination, radiological severity of the disease was evaluated with Kellgren–Lawrence scale. All patients completed KOOS that is a kneerelated disorder-specific questionnaire. TUG test was used for the evaluation of performance-based functional status. Seventy-seven patients (84.5 %) were female. Mean age was 62.9 ± 9.5 (50–85) years, and body mass index was 32.10 ± 4.39 kg/m2. Mean symptom duration was 7.08 ± 6.52 years. Mean radiological stage was 3.22 ± 0.69. There was a statistically significant negative correlation between all of the KOOS domains and TUG (p \ 0.01). As a result of this study, a moderate relationship was found between the all KOOS dimensions and TUG in knee OA. Keywords KOOS TUG Knee osteoarthritis Physical performance
Introduction Knee osteoarthritis (OA) is a common cause of disability and decrease in quality of life in people over 65 years. Pain and F. Sabirli (&) N. Paker D. Bugdayci Physical Medicine and Rehabilitation Clinic, Istanbul PMR Training Hospital, Istanbul, Turkey e-mail: [email protected]
physical function are main outcome criteria for patients with knee osteoarthritis. Both self-report questionnaires and performance-based tests are frequently used for the evaluation of knee-related pain and physical function. Self-assessment questionnaires give information about the experience of a person during activities; however, performance-based tests show the ability of performing these activities. Self-report tests can easily be performed without investigator’s bias in a relatively short time [2, 3]. On the other hand, performance-based tests measure the physical function during the test and they are affected by the patients’ motivation. They provide less information about the person’s perception of his/her environment, and they are less affected by psychogenic factors such as beliefs, expectations, cognitive impairments, cultural, lingual, and educational level [4–6]. Performance-based tests measure functional limitation, whereas self-report tests can show disability that is the social side of the functional limitation [7]. Performance-based tests are considered to indicate the functional loss earlier than the self-report tests [1, 8, 9]. While some investigators prefer self-report tes
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