• Mark T Dillon, Maria C S Inacio, Mary F Burke, Ronald A Navarro, and Edward H Yian.
• The Permanente Medical Group, Sacramento, CA, USA. Electronic address: Mark.T.Dillon@kp.org.
• J Shoulder Elbow Surg. 2013 Oct 1; 22 (10): 1338-44.

BackgroundWhile shoulder arthroplasty is a well established treatment for a variety of conditions about the shoulder, the results of shoulder replacement in younger patients are not as predictable. The purpose of this study is to examine the indications for shoulder arthroplasty in patients 59 years old and younger, and to analyze revision rates between younger and older patients.MethodsThis is a retrospective cohort study of shoulder arthroplasties performed within a statewide integrated healthcare system between 2005 and 2010. Patients were stratified into 2 groups based on age at time of index replacement procedure: younger patients (≤59 years) and older patients (>59 years).ResultsThere were 2981 primary arthroplasties followed for a median time of 2.2 years (interquartile range, 1.0-3.8), 90 (3.0%) of which required revisions. After adjusting for procedure type and diagnosis, younger patients had a two times higher risk (95% CI 1.2-3.5, P = .007) of revision than older patients. When looking at the risk of revision in younger and older patients separately, the risk of revision in hemiarthroplasty (RR = 4.5 vs RR = 1.7) and reverse total shoulder arthroplasty (RR = 33.6 vs RR = 3.0) compared to total shoulder arthroplasty were higher in younger patients compared to older patients.ConclusionThis study suggests patients 59 years and younger have an increased risk of revision at early follow-up. The higher risk of revision in younger patients receiving hemiarthroplasty may support the use of total shoulder arthroplasty in patients 59 years of age and younger.Copyright © 2013 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.

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