Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study

Introduction. Isolated idiopathic teres minor atrophy is a relatively understudied condition characterized by selective atrophy of the teres minor muscle without any identifiable underlying pathology. This study aimed to determine the prevalence of isolated idiopathic teres minor atrophy. Meth...

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Main Authors: Waleed F Alkhaldi, Nouf Alharbi, Faten Almohideb, Mamdouh Almalki, Abdulmalik B Albaker, Abdulrahman Alabdali, Ibrahim Alrashidi, Yazeed Altebainawi, Ali Albweady, Mohammed Mubarak Al Dengoh
Format: Article
Language:English
Published: Ivano-Frankivsk National Medical University 2024-11-01
Series:Galician Medical Journal
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Online Access:https://ifnmujournal.com/gmj/article/view/1935
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author Waleed F Alkhaldi
Nouf Alharbi
Faten Almohideb
Mamdouh Almalki
Abdulmalik B Albaker
Abdulrahman Alabdali
Ibrahim Alrashidi
Yazeed Altebainawi
Ali Albweady
Mohammed Mubarak Al Dengoh
author_facet Waleed F Alkhaldi
Nouf Alharbi
Faten Almohideb
Mamdouh Almalki
Abdulmalik B Albaker
Abdulrahman Alabdali
Ibrahim Alrashidi
Yazeed Altebainawi
Ali Albweady
Mohammed Mubarak Al Dengoh
author_sort Waleed F Alkhaldi
collection DOAJ
description Introduction. Isolated idiopathic teres minor atrophy is a relatively understudied condition characterized by selective atrophy of the teres minor muscle without any identifiable underlying pathology. This study aimed to determine the prevalence of isolated idiopathic teres minor atrophy. Methods. Data were collected retrospectively by examining magnetic resonance imaging scans of the right and left shoulders of individuals aged 18 years or older performed at the Medical Centre of Majmaah University, Al Majma’ah, Saudi Arabia, between February 2019 and October 2022. Teres minor atrophy was classified using the original Goutallier classification system to assess fatty infiltration. In addition, demographics, including age, gender, and nationality, were collected. Associated imaging-based factors, such as teres minor and deltoid muscle edema, rotator cuff muscle tears, and injuries to the labrum and quadrilateral space, were also documented. Results. Among the 2, 194 patients studied, 59 (2.7%) were diagnosed with isolated idiopathic teres minor atrophy, aged 27 to 75 years. Females comprised 59.3% of the affected individuals, and the majority of cases were Saudi nationals (81.4%). The right side was affected in 61% of cases. Nearly half of the affected individuals (50.9%) were classified as grade 2, while 25.4% were classified as grade 4. Patients with grade 3 and grade 4 isolated idiopathic teres minor atrophy were significantly older than those with grade 2 (58.29 ± 7.12 and 57.93 ± 12.34 versus 49.96 ± 11.72, respectively (p=0.029). No statistically significant associations were found between the demographic characteristics of individuals (age and gender) and the pattern of teres minor fatty involvement. Conclusions. The incidence of isolated idiopathic teres minor atrophy was found to be 2.7%. Age was the main statistically significant factor associated with isolated idiopathic teres minor atrophy and the grade of teres minor atrophy. Other evaluated factors, including gender and the pattern of involvement, did not demonstrate any statistically significant associations.
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spelling doaj-art-ce9339ab27e045b39fd7639933cdd5aa2025-08-20T02:54:49ZengIvano-Frankivsk National Medical UniversityGalician Medical Journal2414-15182024-11-0131410.21802/e-GMJ2024-A271935Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective StudyWaleed F Alkhaldi0Nouf Alharbi1Faten Almohideb2Mamdouh Almalki3Abdulmalik B Albaker4Abdulrahman Alabdali5Ibrahim Alrashidi6Yazeed Altebainawi7Ali Albweady8Mohammed Mubarak Al Dengoh9College of Medicine, Majmaah University, Majmaah, Saudi ArabiaCollege of Medicine, King Saud University, Riyadh, Saudi ArabiaCollege of Medicine, King Saud University, Riyadh, Saudi ArabiaCollege of Medicine, King Saud University, Riyadh, Saudi ArabiaCollege of Medicine, Majmaah University, Majmaah, Saudi ArabiaKing Salman Specialist Hospital, Hail, Saudi ArabiaPrince Sultan Military Hospital, MSD Madinah, Saudi ArabiaKing Salman Specialist Hospital, Hail, Saudi ArabiaCollege of Medicine, Qassim University, Qassim Region, Al-Mulida, Saudi ArabiaNajran University, Najran, Saudi ArabiaIntroduction. Isolated idiopathic teres minor atrophy is a relatively understudied condition characterized by selective atrophy of the teres minor muscle without any identifiable underlying pathology. This study aimed to determine the prevalence of isolated idiopathic teres minor atrophy. Methods. Data were collected retrospectively by examining magnetic resonance imaging scans of the right and left shoulders of individuals aged 18 years or older performed at the Medical Centre of Majmaah University, Al Majma’ah, Saudi Arabia, between February 2019 and October 2022. Teres minor atrophy was classified using the original Goutallier classification system to assess fatty infiltration. In addition, demographics, including age, gender, and nationality, were collected. Associated imaging-based factors, such as teres minor and deltoid muscle edema, rotator cuff muscle tears, and injuries to the labrum and quadrilateral space, were also documented. Results. Among the 2, 194 patients studied, 59 (2.7%) were diagnosed with isolated idiopathic teres minor atrophy, aged 27 to 75 years. Females comprised 59.3% of the affected individuals, and the majority of cases were Saudi nationals (81.4%). The right side was affected in 61% of cases. Nearly half of the affected individuals (50.9%) were classified as grade 2, while 25.4% were classified as grade 4. Patients with grade 3 and grade 4 isolated idiopathic teres minor atrophy were significantly older than those with grade 2 (58.29 ± 7.12 and 57.93 ± 12.34 versus 49.96 ± 11.72, respectively (p=0.029). No statistically significant associations were found between the demographic characteristics of individuals (age and gender) and the pattern of teres minor fatty involvement. Conclusions. The incidence of isolated idiopathic teres minor atrophy was found to be 2.7%. Age was the main statistically significant factor associated with isolated idiopathic teres minor atrophy and the grade of teres minor atrophy. Other evaluated factors, including gender and the pattern of involvement, did not demonstrate any statistically significant associations.https://ifnmujournal.com/gmj/article/view/1935isolatedidiopathicteres minoratrophyprevalence
spellingShingle Waleed F Alkhaldi
Nouf Alharbi
Faten Almohideb
Mamdouh Almalki
Abdulmalik B Albaker
Abdulrahman Alabdali
Ibrahim Alrashidi
Yazeed Altebainawi
Ali Albweady
Mohammed Mubarak Al Dengoh
Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study
Galician Medical Journal
isolated
idiopathic
teres minor
atrophy
prevalence
title Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study
title_full Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study
title_fullStr Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study
title_full_unstemmed Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study
title_short Prevalence of Isolated Idiopathic Teres Minor Atrophy: A Retrospective Study
title_sort prevalence of isolated idiopathic teres minor atrophy a retrospective study
topic isolated
idiopathic
teres minor
atrophy
prevalence
url https://ifnmujournal.com/gmj/article/view/1935
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