Subacromial bony erosion: a rare presentation of pigmented villonodular synovitis of the shoulder
Related Experiment Video
Updated: Jun 25, 2026

Anterior Capsular Reconstruction with Human Dermal Allograft for Irreparable Subscapularis Tears
Published on: May 9, 2025
Jong-Hun Ji1, Mohamed Shafi, Sang-Eun Park
1Department of Orthopaedic Surgery, Daejeon St. Mary's Hospital, Catholic University of Korea, Joong-ku, Daejeon, South Korea.
Abstract:
Pigmented villonodular synovitis (PVNS) rarely affects the shoulder. We describe two cases of PVNS arising from the shoulder joint, which caused rotator cuff tears and sub-acromial bony erosion, and which were treated arthroscopically. Sub-acromial erosion is frequently associated with various glenohumeral joint disorders, but it has not been reported in association with PVNS. We believe PVNS should also be considered in the differential diagnosis of patients who present with sub-acromial erosion.
Related Concept Videos
Muscles of the Shoulder
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
Bones of the Upper Limb: Humerus
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a short...
Bones of the Upper Limb: Ulna