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Related Concept Videos

Muscles of the Shoulder01:23

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The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
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DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
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Nine muscles are involved in arm movements. Two of these, the pectoralis major and latissimus dorsi, originate from the axial skeleton and are called axial muscles. The other seven originate from the scapula and are called the scapular muscles.
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Reverse Total Shoulder Arthroplasty
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Acute traumatic posterior shoulder dislocation.

Dominique M Rouleau, Jonah Hebert-Davies, C Michael Robinson

    The Journal of the American Academy of Orthopaedic Surgeons
    |March 8, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Posterior shoulder dislocation is rare and difficult to diagnose, often leading to poor shoulder function if missed. Prompt diagnosis and imaging are crucial for effective management and preventing long-term complications.

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    Area of Science:

    • Orthopedic Surgery
    • Traumatology
    • Sports Medicine

    Background:

    • Posterior shoulder dislocation is an uncommon injury.
    • Varied trauma mechanisms complicate diagnosis.
    • Delayed diagnosis negatively impacts shoulder function.

    Purpose of the Study:

    • To highlight the challenges in diagnosing posterior shoulder dislocations.
    • To emphasize the importance of prompt imaging and treatment.
    • To outline management strategies for acute and delayed presentations.

    Main Methods:

    • Review of clinical presentation and diagnostic challenges.
    • Discussion of imaging modalities for diagnosis.
    • Analysis of treatment options for acute and chronic cases.

    Main Results:

    • High index of suspicion and appropriate imaging are essential.
    • Associated injuries (fractures, rotator cuff tears) require identification.
    • Acute treatment involves reduction; delayed cases may need arthroplasty.

    Conclusions:

    • Early and accurate diagnosis of posterior shoulder dislocation is critical.
    • Comprehensive assessment including associated injuries guides treatment.
    • Management varies from reduction to arthroplasty depending on chronicity and instability.