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Copyright ©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Orthop. Mar 18, 2015; 6(2): 211-220
Published online Mar 18, 2015. doi: 10.5312/wjo.v6.i2.211
Factors affecting healing after arthroscopic rotator cuff repair
Amir M Abtahi, Erin K Granger, Robert Z Tashjian
Amir M Abtahi, Erin K Granger, Robert Z Tashjian, Department of Orthopaedic Surgery, University of Utah, Salt Lake City, UT 84108, United States
Author contributions: Abtahi AM, Granger EK and Tashjian RZ solely contributed to the concept, writing and editing of this paper.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Robert Z Tashjian, MD, Department of Orthopaedic Surgery, University of Utah, 590 Wakara Way, Salt Lake City, UT 84108, United States. robert.tashijan@hsc.utah.edu
Telephone: +1-801-5875457 Fax: +1-801-5875411
Received: July 4, 2014
Peer-review started: July 4, 2014
First decision: July 18, 2014
Revised: September 29, 2014
Accepted: October 1, 2014
Article in press: October 10, 2014
Published online: March 18, 2015
Processing time: 258 Days and 16.1 Hours
Abstract

Rotator cuff repair has been shown to have good long-term results. Unfortunately, a significant proportion of repairs still fail to heal. Many factors, both patient and surgeon related, can influence healing after repair. Older age, larger tear size, worse muscle quality, greater muscle-tendon unit retraction, smoking, osteoporosis, diabetes and hypercholesterolemia have all shown to negatively influence tendon healing. Surgeon related factors that can influence healing include repair construct-single vs double row, rehabilitation, and biologics including platelet rich plasma and mesenchymal stem cells. Double-row repairs are biomechanically stronger and have better healing rates compared with single-row repairs although clinical outcomes are equivalent between both constructs. Slower, less aggressive rehabilitation programs have demonstrated improved healing with no negative effect on final range of motion and are therefore recommended after repair of most full thickness tears. Additionally no definitive evidence supports the use of platelet rich plasma or mesenchymal stem cells regarding improvement of healing rates and clinical outcomes. Further research is needed to identify effective biologically directed augmentations that will improve healing rates and clinical outcomes after rotator cuff repair.

Keywords: Shoulder; Repair; Healing; Tendon; Rotator cuff tear

Core tip: Many factors, both patient and surgeon related, can influence healing after repair. Older age, larger tear size, worse muscle quality, greater muscle-tendon unit retraction, smoking, osteoporosis, diabetes and hypercholesterolemia have all shown to negatively influence tendon healing after rotator cuff repair. Smoking cessation and blood glucose and cholesterol control are methods to potentially improve healing rates. Slower, less aggressive rehabilitation programs may improve healing rates with no negative effect on final range of motion and are therefore recommended after arthroscopic repair of most full thickness tears. Finally, no definitive evidence supports the use of platelet rich plasma or mesenchymal stem cells regarding improvement of healing rates after rotator cuff repair. Routine use of these adjuvants is therefore not currently recommended.