Original Research

Clinically relevant magnetic resonance imaging (MRI) findings in elite swimmers’ shoulders

Arno Celliers, Fekade Gebremariam, Gina Joubert, Thami Mweli, Husain Sayanvala, Louis Holtzhausen
South African Journal of Radiology | Vol 21, No 1 | a1080 | DOI: https://doi.org/10.4102/sajr.v21i1.1080 | © 2017 Arno Celliers, Fekade Gebremariam, Gina Joubert, Thami Mweli, Husain Sayanvala, Louis Holtzhausen | This work is licensed under CC Attribution 4.0
Submitted: 17 August 2016 | Published: 20 January 2017

About the author(s)

Arno Celliers, Department of Diagnostic Radiology, University of the Free State, South Africa
Fekade Gebremariam, Department of Pelonomi Radiology, University of the Free State, South Africa
Gina Joubert, Departement of Biostatistics, University of the Free State, South Africa
Thami Mweli, Dr Sulman and Partners, Netcare Rosebank Hospital, South Africa
Husain Sayanvala, Locum Radiologist, Cape Town, South Africa
Louis Holtzhausen, Department of Sport and Exercise Medicine, University of the Free State, South Africa

Abstract

Background: Shoulder pain is the most common and well-documented site of musculoskeletal pain in elite swimmers. Structural abnormalities on magnetic resonance imaging (MRI) of elite swimmers’ symptomatic shoulders are common. Little has been documented about the association between MRI findings in the asymptomatic shoulder versus the symptomatic shoulder.

Objective: To assess clinically relevant MRI findings in the shoulders of symptomatic and asymptomatic elite swimmers.

Method: Twenty (aged 16–23 years) elite swimmers completed questionnaires on their swimming training, pain and shoulder function. MRI of both shoulders (n = 40) were performed and all swimmers were given a standardised clinical shoulder examination.

Results: Both shoulders of 11 male and 9 female elite swimmers (n = 40) were examined. Eleven of the 40 shoulders were clinically symptomatic and 29 were asymptomatic. The most common clinical finding in both the symptomatic and asymptomatic shoulders was impingement during internal rotation, with impingement in 54.5% of the symptomatic shoulders and in 31.0% of the asymptomatic shoulders. The most common MRI findings in the symptomatic and asymptomatic shoulders were supraspinatus tendinosis (45.5% vs. 20.7%), subacromial subdeltoid fluid (45.5% vs. 34.5%), increased signal in the AC Joint (45.5% vs. 37.9%) and AC joint arthrosis (36.4% vs. 34.5%). Thirty-nine (97.5%) of the shoulders showed abnormal MRI features.

Conclusion: MRI findings in the symptomatic and asymptomatic shoulders of young elite swimmers are similar and care should be taken when reporting shoulder MRIs in these athletes. Asymptomatic shoulders demonstrate manifold MRI abnormalities that may be radiologically significant but appear not to be clinically significant.


Keywords

shoulder; elite swimmers; magnetic resonance imaging; tendinosis, overhead athletes, swimmers shoulder

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