ArticleJournal of ultrasound2026
Axillary-pouch capsular thinning after ultrasound-guided hydrodilation in post-stroke adhesive capsulitis: a longitudinal observational study.
Article in Journal of ultrasound, 2026. 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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10 authors.
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Abstract
purposeTo characterize longitudinal changes in axillary-pouch capsular thickness and clinical outcomes after ultrasound-guided hydrodilation with corticosteroid injection in patients with post-stroke adhesive capsulitis, and to examine associations between structural and clinical changes.
methodsIn this longitudinal observational study, 20 patients underwent clinical and ultrasonographic assessment before the first procedure (T0) and at follow-up (T1), separated by a median of 5.7 months. All participants also received conventional neurorehabilitation. Paired changes in pain measured using the Numeric Rating Scale (NRS), range of motion (ROM), strength, muscle tone, disability, quality of life, and capsular thickness were assessed using Wilcoxon signed-rank or exact McNemar tests. Associations between within-participant changes were explored using Spearman correlations.
resultsMedian movement-evoked pain decreased by 4 NRS points during flexion and abduction and by 5 points during external rotation (all p < 0.001). Active and passive ROM improved across all assessed movements (all p ≤ 0.001). Median affected-side capsular thickness decreased from 3.7 to 2.45 mm, with a median within-participant reduction of 1.4 mm (p < 0.001). The proportion meeting the ultrasonographic criteria for adhesive capsulitis decreased from 20/20 at T0 to 4/20 at T1. Capsular-thickness changes were not significantly associated with changes in any clinical outcome (all |ρ|≤ 0.35; all p ≥ 0.13).
conclusionIn this uncontrolled cohort, hydrodilation with corticosteroid injection, delivered alongside neurorehabilitation, was followed by reduced movement-evoked pain, improved shoulder mobility, and axillary-pouch capsular thinning. Capsular thickness should be interpreted as a complementary structural marker rather than a surrogate for clinical recovery.
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