Affiliations: [a] Istanbul Physical Medicine and Rehabilitation Training Hospital, Istanbul, Turkey | [b] Public Health Department, University of Istanbul School of Medicine, Istanbul, Turkey
Correspondence:
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Corresponding author: Nurdan Paker, Istanbul Physical Medicine and Rehabilitation Training Hospital, Istanbul, Turkey. Tel.: +90 212 496 5000 14290; E-mail:nurdanpaker@hotmail.com
Abstract: BACKGROUND: Activities-specific Balance Confidence (ABC) scale is a
well known tool to evaluate the functional balance. Balance impairment may
accompany to knee osteoarthritis. OBJECTIVE: The aim was to investigate the reliability and validity
of the Turkish version of ABC in knee osteoarthritis. METHODS: Forty-nine patients with knee osteoarthritis were
included. All the participants were evaluated by ABC and Berg Balance Scale
(BBS). Knee Injury and Osteoarthritis Outcome Score (KOOS) was used for the
assessment of the knee related condition. RESULTS: Mean age was 64.7 ± 9.2. Eighty-five percent was women.
Mean ABC score was 53.5% and BBS score was 40. Interclass correlation
coefficient was 0.95. There was a statistically significant positive
correlation between the test-retest results (t= 1.90, p= 0.063). Correlation
coefficient was high (p= 0.001, r= 0.953). Cronbach's alpha was 0.97. There was
a significant positive correlation between ABC-T and BBS, the symptoms,
daily living activities and quality of life subscales of KOOS (r= 0.555, p< 0.001; r= 0.424, r= 0.379, r= 0.621, p< 0.01). ABC-T correlated negatively with the radiological severity (r = -0.316, p< 0.05). CONCLUSIONS: ABC-T is a reproducible test with excellent internal
consistency and construct validity in knee osteoarthritis. Balance
confidence was moderate and related with the symptoms, daily living
activities, disease severity and quality of life.
