ArticleHaemophilia : the official journal of the World Federation of Hemophilia
Weight-Bearing Lunge Test in Young Patients With Haemophilia and Limited Joint Damage: Reliability and Functional Associations for Ankle Assessment.
Article in Haemophilia : the official journal of the World Federation of Hemophilia. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionPerformance-based measures are essential for detecting early musculoskeletal functional limitations in patients with haemophilia (PwH). The Weight-Bearing Lunge Test (WBLT) assesses ankle dorsiflexion mobility, but its psychometric properties in PwH remain unclear.
aimTo determine the test-retest reliability and construct validity of the WBLT in young PwH and limited joint damage, and to examine its associations with ankle-specific clinical and imaging measures.
methodsThis prospective cross-sectional study included 24 PwH (mean age: 15.6 ± 4.7 years). Ankle dorsiflexion was assessed using the WBLT and tibial inclination angle with Goniometer PRO. Test-retest reliability was evaluated in 20 participants. Joint health was assessed using the HJHS and HEAD-US. Reliability was analysed using ICC (2,1), and construct validity using Spearman correlations.
resultsThe WBLT demonstrated excellent test-retest reliability (ICC = 0.96-0.99). Moderate correlations were found between WBLT Right and HJHS Total Score (r = -0.493, p = 0.014), HJHS Right Ankle Score (r = -0.621, p = 0.001), and HEAD-US Right Ankle Score (r = -0.481, p = 0.017). WBLT Left correlated with GPRO Left (r = -0.587, p = 0.006) and HEAD-US Left Ankle Score (r = -0.456, p = 0.025). No significant correlations were found with HEAD-US Total or GPRO Right.
conclusionThe WBLT showed excellent test-retest reliability and meaningful associations with ankle-related clinical and imaging findings in young PwH and limited joint damage. These findings suggest that the WBLT may provide a simple, functional, and objective measure of ankle dorsiflexion mobility.
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