Deltoid pain most commonly occurs ... The deltoid muscle has three distinct parts: the anterior (front), lateral (side), and posterior (rear) deltoid. Each part contributes to different arm ...

[7–9] Specifically, several researchers [10–13] hypothesized that the stiffness of specific muscles (rotator cuff) may contribute to posterior shoulder stiffness. These potential mechanisms ...

Additionally, the role of the posterior deep deltoid ligament has been highlighted in studies examining its contribution to ankle stability. Research indicated that when the posterior deep deltoid ...