Efficacy of ultrasound-guided intra-articular hyaluronic acid injection in the management of adhesive capsulitis: a randomized controlled trial
DOI:
https://doi.org/10.2340/jrm.v58.44901Keywords:
adhesive capsulitis, Frozen shoulder, hyaluronic acid, Physical Therapy, Shoulder pain, intra-articular injection, ultrasound-guided procedureAbstract
Objective: To compare the efficacy and safety of ultrasound-guided intra-articular hyaluronic acid injection versus supervised rehabilitation in patients with frozen-phase adhesive capsulitis.
Design: Single-center, parallel-group, randomized controlled trial with 26-week follow-up.
Subjects/Patients: Forty-six adults aged 40–70 years with clinically and radiologically confirmed frozen-phase adhesive capsulitis.
Methods: Participants were randomly assigned to receive either three weekly ultrasound-guided intra-articular hyaluronic acid injections or supervised physical therapy twice weekly for six weeks. Outcomes assessed at baseline and at weeks 4, 6, 8, and 26 included the Shoulder Pain and Disability Index (SPADI) and shoulder range of motion.
Results: Both groups achieved significant within-group improvements in SPADI and range of motion over 26 weeks (all p < 0.01 vs. baseline). No statistically significant between-group differences were observed in total SPADI or its pain and disability subscales at any follow-up time point (all p > 0.05). At week 26, the hyaluronic acid group’s mean total SPADI decreased from 43.0 ± 17.7 to 16.1 ± 12.8 (p < 0.01), while the rehabilitation group improved from 52.0 ± 18.4 to 23.2 ± 21.8 (p < 0.01). Pain subscores were reduced by 64.3% (hyaluronic acid) and 56.1% (rehabilitation); function subscores decreased by 60.9% and 54.8%, respectively (all p < 0.01). Both groups showed significant gains in active and passive flexion, abduction, and external rotation, without significant between-group differences (all p > 0.05). No treatment-related adverse events were observed.
Conclusion: Ultrasound-guided hyaluronic acid injection and supervised rehabilitation produced comparable and clinically meaningful improvements in pain, function, and shoulder mobility in frozen-phase adhesive capsulitis.
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Copyright (c) 2026 Chih-Ya Chang, Ching-Ting Chen, Yung-Hsiang Lin, Chi-Fu Chiang, Yi-Wen Mao, Li-Wei Chou
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