JKSSH Journal of the Korean Society for Surgery of the Hand J Korean Soc Surg Hand 1598-3889 2234-0998 The Korean Society for Surgery of the Hand 10.12790/jkssh.2015.20.3.142 jkssh-20-142 Case Report Risk of the Repeated Local Steroid Injection: Rupture of the Extensor Mechanism at Zone V ParkJin-Sung LeeDong-Yeong HwangSun-Chul NamDae-Cheol Department of Orthopaedic Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju, Korea Correspondence to: Dae-Cheol Nam DDepartment of Orthopaedic Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, 79 Gangnam-ro, Jinju 52727, Korea TEL: +82-55-750-8107 FAX: +82-55-750-9244 E-mail: ortho87@naver.com 12 2015 11 12 2015 203 142 147 30032015 23072015 23072015 Copyright © 2015 Korean Ophthalmological Society 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract

Indicators for local steroid injection on the hands include trigger finger, De Quervain’s disease, carpal tunnel syndrome and trapeziometacarpal joint arthritis. Local steroid injection is an effective technique for rapid alleviation of symptoms and return to daily life. Complications following local steroid injection include depigmentation of the skin, subcutaneous fat atrophy, infection and tendon rupture. Tendon rupture and infection rarely occur as severe complications, and local steroid injection should not be abused or misused. The authors experienced a rupture of the extensor mechanism at extensor zone V after repeated local steroid injection to treat vague pain in the second metacarpophalangeal joint, followed by reconstruction of the extensor mechanism through tendon transfer and sagittal band reconstruction. We herein report a case with the literature review.

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Photographs of hand before surgery. (A) Erythematous skin color change on dorsal aspect of second metacarpophalangeal joint. (B) Loss of active extension at the second metacarpophalangeal joint.

Magnetic resonance images. (A) T1-weight sagittal image demonstrates loss of continuity of extensor tendon rupture at the second metacarpophalangeal joint and proximal stump retraction by approximately 2 cm (arrow). (B) T1-weight axial image demonstrates a defect of the extensor tendon and sagittal band around the second metacarpophalangeal joint (arrow).

Photographs of operation. (A) Defect of extensor mechanism at zone V with scar tissues and granulation tissues. There are loss of continuity of the extensor digitorum communis tendons and extensor indicis proprius tendon of the index finger at zone V. Additionally, defect of the sagittal band is demonstrated. (B) Tendon ends have frayed, necrotic, adhesive and degenerative appearance with foreign body deposition which is suggested to be steroid. (C) Tendon gap is approximately 2.5 cm. (D) Reconstruction of the extensor tendon with autologous palmaris longus tendon graft. (E) Reconstruction of sagittal band using palmaris longus tendon to prevent subluxation of reconstructed extensor tendon.

(A, B) At 1 year after surgery, index finger motion is good with mild extension lag.