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Case Reports in Rheumatology
Volume 2013 (2013), Article ID 759193, 3 pages
http://dx.doi.org/10.1155/2013/759193
Case Report

An Unusual Complication after Shoulder Hemiarthroplasty

Edinburgh Royal Infirmary, Orthopaedic Department, 51 Little France Crescent, Old Dalkeith Road, Edinburgh, Midlothian EH16 4SA, UK

Received 26 January 2013; Accepted 7 March 2013

Academic Editors: D. Aeberli, R. Cevik, P. E. Prete, and M. Salazar-Paramo

Copyright © 2013 Oliver D. Stone and S. J. Breusch. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hemiarthroplasty of the shoulder can be a safe and an effective treatment for pain in patients with rheumatoid arthritis. Many complications have been previously described in the literature; the most common of which are dislocation, loosening, periprosthetic fractures, and infection. We report a patient who presented with a discharging sinus over the tip of the acromium which was created by the displacement of the prosthesis and erosion of the AC joint and distal clavicle. The erosion of the distal clavicle and AC joint caused the remaining proximal clavicle to become mobile and displaced posteriorly; this spike of clavicle was then able to penetrate the trapezius muscle and eventually the skin causing an aseptic sinus. This was successfully treated with the exploration and excision of the distal 2 cm of the clavicle.