Abstract
BackgroundThis 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.MethodsNinety-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).ResultsCriterion 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 MDC90 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).ConclusionThe Spanish Lysholm score demonstrated that it is a reliable and valid instrument that can be used to assess knee function after ligament injuries.
Highlights
Anterior cruciate ligament (ACL) injuries account for more than 50% of all sustained knee injuries [1]
This study aims to report the psychometric properties of the Spanish version of the Lysholm score
For construct validity was developed by factor analysis, the correlation matrix for the Spanish version of Lysholm was determined to be suitable based on the Kaiser-Meyer-Oklin values (0.86) and Bartlett’s Test of Sphericity (p
Summary
Anterior cruciate ligament (ACL) injuries account for more than 50% of all sustained knee injuries [1]. One study states that the incidence of meniscus tears in patients with an ACL lesion is 40% in the first year, 60% in the fifth year and up to 80% 10 years after the injury [6]. The Lysholm score was developed to evaluate function and activity after ACL surgery in terms of stability [8] and graded activity [9]. It has been validated as an instrument administered by the patient to measure symptoms and function in patients with various knee injuries [10,11,12]. 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
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