Collagen injections versus dry needling in the treatment of chronic supraspinatus tendinopathy: a randomized controlled trial

Front Surg. 2026 Mar 13;13:1771944. doi: 10.3389/fsurg.2026.1771944. eCollection 2026. ABSTRACT PURPOSE: This randomized controlled study compares ultrasound-guided collagen injections (USG-CI) vs. ultrasound- guided dry needling (USG-DN) for treating chronic supraspinatus tendinopathy. METHODS: Forty patients were randomly divided into two groups of 20 each. Group A received four weekly collagen injections, while Group B underwent two […]