Extensor Digiti Minimi Triggering Caused by an Anatomical Variation: A Case Report

Roh,  Youn Tae; Jeong,  Changhoon; Kang,  Soo Hwan; Lee,  Jae Young; Jeon,  Sang Hyun; Park,  Il Jung

doi:2015.20.4.204

Arch Hand Microsurg > Volume 20(4); 2015 > Article

Case Report

Journal of the Korean Society for Surgery of the Hand 2015;20(4):204-208.
Published online December 30, 2015.
DOI: https://doi.org/10.12790/jkssh.2015.20.4.204

Extensor Digiti Minimi Triggering Caused by an Anatomical Variation: A Case Report

Youn Tae Roh, Changhoon Jeong, Soo Hwan Kang, Jae Young Lee, Sang Hyun Jeon, Il Jung Park

¹Department of Orthopaedic Surgery, Uijeongbu Paik Hospital, Uijeongbu, Korea.
²Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea. jikocmc@naver.com

Received: 2 August 2015 • Accepted: 11 August 2015

Abstract

Although flexor tendon triggering due to stenosing flexor tenosynovitis is common clinically, extensor triggering is quite rare. Known common causes are impingement between extensor tendon and extensor retinaculum, stenosis of the tendon sheath, and impingement between extensor tendon and osteophyte. We report rare case of triggering in the little finger caused by impingement between extensor digiti minimi and synovial septum.