Avtor/Urednik		Paravlić, Armin; Pišot, Saša; Mitić, Petar; Pišot, Rado
Naslov		Validation of the Oxford knee score and lower extremity functional score questionnaires for use in Slovenia
Tip		članek
Vol. in št.		Letnik 140, št. 10
Leto izdaje		2020
Obseg		str. 1515-1522
ISSN		0936-8051 - Archives of orthopaedic and trauma surgery
Jezik		eng
Abstrakt		Background With the increasing prevalence of total knee replacement (TKR) due to knee osteoarthritis, the absence of patient-reported outcome measures in Slovenia must be addressed. Questions/purposes (1) We cross-culturally adapted Oxford Knee Score (OKS) and Lower Extremity Functional Scale (LEFS) questionnaires to the Slovenian-speaking community. (2) We evaluated OKS and LEFS psychometric characteristics. Patients and methods In the frst assessment (Time 1) Slovenian versions of both questionnaires (OKS-Slo and LEFS-Slo), knee pain, timed-up to go (TUG) and sit to stand (STS) tests were completed by 123 subjects (55% females), of which 78 were patients scheduled for TKR and 45 were healthy age-matched controls. The questionnaires were assessed one week apart (Time 2) to investigate the test%retest reliability, with 121 subjects (98.4%) completing second measurements. Results Signifcant diferences were observed between the two groups. Where patients had greater body mass index, they were slower in TUG, weaker in STS, had greater knee pain in both knees and scored lower on both questionnaires. Additionally, correlation analysis showed that OKS-Slo and LEFS-Slo correlated almost perfectly (correlation coefcient [CC]=.968, p<0.001). Excellent negative correlations were observed with TUG (OKS-Slo/CC=% 0.679, p<0.001; LEFSSlo/CC=% 0.692, p<0.001) and STS (OKS-Slo/CC=0.790, p<0.001; LEFS-Slo/CC=0.815, p<0.001) tests, while knee pain of afected leg correlated the most (OKS-Slo/CC=% 0.923, p<0.001; LEFS-Slo/CC=% 0.915, p<0.001). The Cronbach%s alpha coefcient for both the OKS-Slo and LEFS-Slo ranged between 0.87 and 0.99, while the interclass correlation coefcient was excellent; i.e., 0.99. Finally, both questionnaires proved to be unidimensional measures. Conclusion The Slovenian version of both questionnaires is feasible, valid and reliable for use in clinical studies including the older adult population in Slovenia. Level of evidence Level III, Diagnostic-case-control study
Proste vsebinske oznake		total knee replacement Oxford Knee Score quetionnaire Lower Extremity Functional Scale questionnaire psychometric properties self-reported measures osteoarthritis quality of life physical function Slovenia