The Subscapularis Muscle: A Proposed Classification System.
Nicol ZielinskaR Shane TubbsAndrzej BorowskiMichał PodgórskiŁukasz Hubert OlewnikPublished in: BioMed research international (2021)
The SM is morphologically variable in the number of its bellies. Evolutionary changes are probably the reason. The most common type was the SM with three bellies, in line with Larson's model of the division of the SM into three parts. Subsequent studies should be carried out based on MRI or ultrasonography examination to confirm if it is possible to show all types (presented in this study) among group of patients during MRI.