Análise de reprodutibilidade da escala "American Knee Society Score" (AKSS)

Ana Luiza Cabrera Martimbianco,Mário Carneiro Filho,Ozório Lira Neto,Fernanda Rizzo Calabrese,Luiz Alberto Nakao Iha,Marcelo Petrilli

doi:10.1590/s1413-78522012000100007

Ana Luiza Cabrera Martimbianco, Mário Carneiro Filho + Show 4 more

Open Access

https://doi.org/10.1590/s1413-78522012000100007

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Abstract

ObjectiveTo analyze the reproducibility of the "American Knee Society Score" (AKSS) scale, and determine its measurement, in order to make it useful for the evaluation of patients with osteoarthritis or who have undergone total knee arthroplasty.MethodsIn the first interview, the AKSS was applied along with the SF-36 and WOMAC (examiner 1). After thirty minutes the same patients answered only the AKSS. After a two week break, a third additional interview with AKSS was applied (examiner 2).ResultsWe selected 58 patients with a mean age of 67.4 years. In the analysis of reproducibility, by ICC, there was strong inter-examiner and intra-examiner correlation for two AKSS components. In the individual items analysis there was good correlation for "Pain", "Range of Motion", "Flexion contracture" and all items of the AKSS Function component. Validation through the Pearson coefficient showed good correlation between AKSS "Pain," WOMAC "pain" and SF-36 "Pain domain", and good correlation between the AKSS and SF-36 "Functional Capacity domain".ConclusionThe AKSS adapted to Brazilian culture is useful and reliable for the evaluation of individuals with osteoarthritis or those who have undergone TKA.

Highlights

Osteoarthritis is one of the most frequent musculoskeletal disorders, responsible for the recurring work incapacity of the individuals affected
All the patients were reevaluated after thirty minutes (A2) and again after an interval of two weeks (A3), whereas both evaluations were carried out by examiner 2 (E2)
In the analysis of the inter-examiner and intra-examiner reproducibility, according to the estimates of the intraclass correlation coefficient (ICC), strong correlation was observed for the total scores of the two components: Clinical American Knee Society Score” (AKSS) and Functional AKSS (Clinical AKSS 0.87 and 0.89 / Function AKSS 0.89 and 0.81, respectively)