Kyujo Lee1, Hyunwoo Kim1, Hyunjin Lee1, Il-Tae Jang2, Syungkyun Choi3

1Nanoori 2bko R&D Institute, Nanoori Hospital Suwon, Suwon, Republic of Korea
2Department of Neurosurgery, Nanoori Hospital Gangnam, Seoul, Republic of Korea
3Department of Orthopedic Surgery, Nanoori Hospital Gangnam, Seoul, Republic of Korea

Keywords: Arthroscopy, pigmented villonodular synovitis, shoulder


Pigmented villonodular synovitis (PVNS) occurs most frequently in the knee and hand joints and is extremely rare in the shoulder joints. A 27-year-old women was admitted to our outpatient clinic with an abrupt-onset pain and limited range of motion of the left shoulder. On arthroscopic examination, localized PVNS surrounding the reactive synovitis in the posterior aspect of the subscapularis within the shoulder joint cavity. The mass was removed using a grasper and shaver. Symptomatic relief was achieved following surgical removal. In conclusion, although rare, localized PVNS of the shoulder joint should be kept in mind in patients with a sudden-onset shoulder joint subluxation and pseudoparalysis.

Citation: Lee K, Kim H, Lee H, Jang II-T, Choi S. An abrupt- onset shoulder joint subluxation and pseudoparalysis caused by intraarticular pigmented villonodular synovitis: A case report. Jt Dis Relat Surg 2021;32(1):258-261.

Conflict of Interest

The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.

Financial Disclosure

The authors received no financial support for the research and/or authorship of this article.


We would like to acknowledge Kyeong-Rae Kim, a Nanoori Scientific Team member, for his valuable assistance in acquiring the full text articles for the literature review and managing digital works.