Abstract
The glenohumeral joint facilitates the large range of upper limb motion that is essential for undertaking most activities of daily living. The shallow concavity of the bony glenoid and fibrocartilaginous labrum, together with the humeral head, comprises an inherently unstable joint that is dependent on the integrity and morphology of the articular surfaces, as well as the simultaneous activity of the rotator cuff for glenohumeral joint compression and stability. The scapulothoracic joint provides an additional stabilization by increasing upper limb range of motion and providing a moving “seat” for the humeral head, while the bony glenoid concavity, joint capsule and ligaments generate passive support to the glenohumeral joint, particularly in the mid-range and end range of joint motion. Disease or trauma to any of these bony or soft-tissue stabilizers may result in glenohumeral instability.
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Ernstbrunner, L., Ackland, D., de Girolamo, L. (2020). Glenohumeral Joint Instability: Basic Science and Potential Treatment Options. In: Brzóska, R., Milano, G., Randelli, P., Kovačič, L. (eds) 360° Around Shoulder Instability. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-61074-9_43
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DOI: https://doi.org/10.1007/978-3-662-61074-9_43
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