Adaptation of the Russian version of Oxford Knee Score

Abstract

Objective: to adapt the Russian version of the 1998 Oxford Knee Score (OKS) to assess the level of pain and function of the knee joint in patients both before and after primary knee arthroplasty. Material and methods. Validation and cross-cultural adaptation of the Russian version of OKS has been completed. A patient survey was conducted, and according to its results, the filling rates of both Russian-language versions of OKS were assessed, based on the criteria developed in the course of the current study. The following parameters were also evaluated in our study: validity, internal fit (Cronbach's a), reproducibility, ceiling/floor effect, filling rate, mean score, mean age of patients. Results. The study involved 200 patients hospitalized for primary knee arthroplasty. 167 of them (83%) were women, mean age 64.4 (SD 8.2) and 33 (17%) men, mean age 64 (SD 9.7). Validity index — 0.73, p<0.001, Cronbach's a — 0.864, reproducibility — 0.93 (0.76-0.98), ceiling effect in questions 1, 2, 3, 4; gender effect in questions 5, 7, 10, 11. Conclusion. The new Russian version of OKS, in comparison with the previous version, showed an improvement in the examined criteria for the comparison of the occupancy rates by 6, 9, 11 and 16%, respectively (p<0.05 for each of the criteria).