Abstract

IntroductionRestricted ankle dorsiflexion is common after lower limb injury. The aim of this pilot study was to investigate the effect of passive ankle joint mobilization and calf muscle massage on ankle dorsiflexion range of motion in adults with residual restricted dorsiflexion. The secondary aim was to assess the methodology of the pilot study to inform a larger clinical trial. MethodThe study design was a randomized crossover trial with assessor blinding. Twenty-five healthy participants with a history of lower limb injury were included in the study. Ankle joint mobilization and calf muscle massage were applied for 5 min in a random order, one to two weeks apart. Ankle dorsiflexion was measured by using the weight-bearing lunge pre- and post-intervention (cm). Paired t-tests were used to analyze the effect of the manual therapy interventions on restricted ankles. A minimal detectable difference 95% (MMD95) was calculated. The pilot study was analyzed for suitability of inclusion criteria, blinding of assessors and the manual therapist, and the washout period. ResultsA significant increase in dorsiflexion was demonstrated for ankle joint mobilization (change score = 0.51 ± 0.76, p = 0.003) and calf muscle soft tissue massage (change score = 0.91 ± 1.07, p < 0.001). There was no difference in change scores between manual therapy techniques (mobilization 0.51 ± 0.76, massage 0.91 ± 1.07, p = 0.12). Evaluation of the pilot study revealed limitations to be modified in future studies. ConclusionThese preliminary data indicate ankle joint mobilization and calf muscle soft tissue massage had similar effects on increasing ankle dorsiflexion range of motion in ankles with residual dorsiflexion restriction.

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