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  2. Rotator cuff - Wikipedia

    en.wikipedia.org/wiki/Rotator_cuff

    The shoulder that is injured is placed in a sling and shoulder flexion or abduction of the arm is avoided for 4 to 6 weeks after surgery (Brewster, 1993). Avoiding movement of the shoulder joint allows the torn tendon to fully heal. [24] Once the tendon is entirely recovered, passive exercises can be implemented.

  3. Supraspinatus muscle - Wikipedia

    en.wikipedia.org/wiki/Supraspinatus_muscle

    The supraspinatus muscle performs abduction of the arm, and pulls the head of the humerus medially towards the glenoid cavity. [5] It independently prevents the head of the humerus from slipping inferiorly. [5] The supraspinatus works in cooperation with the deltoid muscle to perform abduction, including when the arm is in an adducted position. [5]

  4. List of abductors of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_abductors_of_the...

    Abduction is an anatomical term of motion referring to a movement which draws a limb out to the side, away from the median sagittal plane of the body. It is thus opposed to adduction . Upper limb

  5. List of movements of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_movements_of_the...

    Lateral rotation (in abduction: 95°; in adduction: 70°) Infraspinatus: Infraspinous fossa of scapula Greater tubercle of humerus Teres minor Upper two thirds of lateral border of scapula Greater tubercle of humerus Posterior fibers of deltoid Spine of scapula Middle of lateral surface of shaft of humerus Medial rotation (in abduction: 40 ...

  6. List of adductors of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_adductors_of_the...

    Superior rectus muscle; Inferior rectus muscle; Medial rectus muscle; jaw (muscles of mastication, the closing of the jaw is adduction): masseter; pterygoid muscles (lateral and medial) temporalis; vocal folds. Lateral cricoarytenoid muscle

  7. Infraspinatus muscle - Wikipedia

    en.wikipedia.org/wiki/Infraspinatus_muscle

    In human anatomy, the infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa. [1] As one of the four muscles of the rotator cuff , the main function of the infraspinatus is to externally rotate the humerus and stabilize the shoulder joint.

  8. Suprascapular nerve - Wikipedia

    en.wikipedia.org/wiki/Suprascapular_nerve

    Supraspinatus muscle helps in 0°-15° arm abduction. And Infraspinatus helps in lateral rotation (external rotation) of humerus. Suprascapular nerve entrapment syndrome , causing shoulder pain and localized muscular atrophy of the supraspinatus and infraspinatus muscles.

  9. List of external rotators of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_external_rotators...

    External rotation (or extorsion or lateral rotation) is an anatomical term of motion referring to rotation away from the center of the body. The external rotator muscles include: Muscles