Strength Assessment After Reverse Shoulder Arthroplasty

Objective The main objective was to evaluate the anterior flexion force (AFF) and the lateral abduction force (LAF) of patients who underwent reverse shoulder arthroplasty (RSA) and to compare the measured force with that in a similar-age control group. The secondary objective was to identify progno...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of shoulder and elbow arthroplasty Vol. 7; p. 24715492231167111
Main Authors:	Almeida, Alexandre, Junior, Aloir DO, Pante, Samuel, Gobbi, Luis F, Vicente, Marcelo G, Oliboni, Arivaldir B, Agostini, Ana P
Format:	Journal Article
Language:	English
Published:	Los Angeles, CA SAGE Publications 2023 Sage Publications Ltd SAGE Publishing
Subjects:	Joint surgery Muscle strength Original Scientific Research Shoulder flexion strength and abduction strength Reverse shoulder arthroplasty
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Objective The main objective was to evaluate the anterior flexion force (AFF) and the lateral abduction force (LAF) of patients who underwent reverse shoulder arthroplasty (RSA) and to compare the measured force with that in a similar-age control group. The secondary objective was to identify prognostic factors for muscle strength recovery. Methods Forty-two shoulders that underwent primary RSA between September 2009 and April 2020 met the inclusion criteria and were called the arthroplasty group (AG). The control group (CG) consisted of 36 patients. The mean AFF and the mean LAF were evaluated with a digital isokinetic traction dynamometer. Results The average AFF found in the AG was 15 N, while in the CG, the average AFF was 21 N (P < .001). The average LAF in the AG was 14 N (standard deviation [SD] 8 N), while in the CG the average LAF was of 19 N (SD 6 N) (P = .002). All prognostic factors studied in the AG showed no statistical significance: dominance (AFF 0.697/LAF 0.883), previous rotator cuff repair surgery (AFF 0.786/LAF 0.821), Hamada radiological classification (AFF 0.343/LAF 0.857), magnetic resonance imaging (MRI) pre-operative evaluation of the quality of the teres minor (AFF 0.131/LAF 0.229), suture of the subscapularis at the end of the arthroplasty procedure (AFF 0.961/LAF 0.325) and postoperative complications (AFF 0.600/LAF 0.960). Conclusion The mean AFF was 15 N, and the mean LAF was 14 N. The comparison of AFF and LAF with a CG showed a 25% reduction in muscle strength. It was not possible to demonstrate prognostic factors for muscle strength recovery after RSA.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2471-5492 2471-5492
DOI:	10.1177/24715492231167111