Open AccessThe Lysholm score: Cross cultural validation and evaluation of psychometric properties of the Spanish version
Author(s) -
Manuel Arroyo-Morales,
Jose Martin-Alguacil,
Mario LozanoLozano,
Antonio CuestaVargas,
Andrés J. Fernández-Fernández,
Juan Manuel González,
Yelverton Tegner,
Irene CantareroVillanueva
Publication year - 2019
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0221376
Subject(s) - construct validity , physical therapy , reliability (semiconductor) , medicine , ceiling effect , exploratory factor analysis , criterion validity , test (biology) , psychometrics , clinical psychology , pathology , paleontology , power (physics) , physics , alternative medicine , quantum mechanics , biology
Background This study aims at assessing the validity and reliability of the Spanish version of the Lysholm score, a widely used instrument for assessing knee function and activity level after ligament injuries. Methods Ninety-five participants (67.4% male, 22±5 years) completed the questionnaire twice within 7 days and a subsample of 42 participants completed a test-retest reliability. Reliability, validity and feasibility psychometric properties were studied. The validity of the questionnaire was analysed using ceiling and floor effects. Factor structure and construct validity were analysed with the SF-36, the Hip and Knee Questionnaire (HKQ) and one leg jump test (OLJT). Results Criterion validity with the SF-36 Physical State was moderate (r = 0.50 and p<0.01), poor and inverse relationship (r = -0.31, p<0.01) with HKQ and positive moderate (r = 0.59, p<0.01) with OLJT. Measurement error from MDC 90 was 3.9%. Exploratory factor analysis demonstrated a one-factor solution explaining 51.5% of total variance. The x2 test for the one-factor model was significant (x2 = 29.58, df = 20, p < 0.08). Test-retest reliability level was high (ICC2.1 = 0.92, p<0.01) and also the internal consistency (α = 0.77). Conclusion The Spanish Lysholm score demonstrated that it is a reliable and valid instrument that can be used to assess knee function after ligament injuries.