Scapular Region Flashcards
Bony Landmarks of Deltoid
Clavicle
Acromion Process
Spine of Scapula
Deltoid Tuberosity of Humerus
Actions of Deltoid
Flexion & Medial Rotation (anterior)
Abduction (middle)
Extension & Lateral Rotation & Horizontal Extension (posterior)
Innervation of Deltoid
Axillary Nerve (C5-C6)
Bony Landmarks of Teres Major
Dorsal Surface of Inferior Angle of Scapula
Lower 1/3 of Lateral Border of Scapula
Medial Lip of the Intertubercular Sulcus of Humerus
Action of Teres Major
Adduction
Medial Rotation
Extension
(Of Humerus)
Innervation of Teres Major
Lower Subscapular Nerve (C5-C6)
Bony Landmarks of Supraspinatus
Medial 2/3 of Supraspinous Fossa
Superior Facet of Greater Tubercle of Humerus
Shoulder Joint Capsule
Actions of Supraspinatus
Initiates Abduction
Lateral Rotation
(Of Humerus)
Stabilizes Glenohumeral Joint (Reinforces Superior Aspect of Joint Capsule)
Innervation of Supraspinatus
Suprascapular Nerve (C4-C6)
Bony Landmarks of Infraspinatus
Medial 2/3 of Infraspinous Fossa
Middle Facet of the Greater Tubercle of Humerus
Shoulder Joint Capsul
Actions of Infraspinatus
Lateral Rotation
Stabilization of Glenohumeral Joint
Innervation of Infraspinatus
Suprascapular Nerve (C5-C6)
Bony Landmark of Teres Minor
Upper 2/3 of Dorsal Surface of Lateral Border of Scapula
Inferior Facet of Greater Tubercle of Humerus
Shoulder Joint Capsule
Actions of Teres Minor
Lateral Rotation
Stabilization of Glenohumeral Joint
Innervation of Teres Minor
Axillary Nerve (C5-C6)
Bony Landmarks of Subscapularis
Subscapular Fossa
Lesser Tubercle of Humerus
Actions of Subscapularis
Medial Rotation of Humerus
Stabilizes Glenohumeral Joint
Innervation of Subscapularis
Upper & Lower Subscapular Nerves (C5-C6)
Describe the neurovascular tract: Quadrangular Space
Teres Minor
Teres Major
Long Head of Triceps
Humerus
Posterior Circumflex Humeral A.
Axillary N.
Describe the neurovascular tract: Medial Border of Scapula
Dorsal Scapular N.
Dorsal Scapular A.
Describe the neurovascular tract: Scapular Notch
Superior Scapular Notch
Superior Transverse Scapular Ligament
Suprascapular A. (Above Ligament)
Suprascapular N. (Below Ligament)
Describe Shoulder Separation + Anatomical Structures
Fall On an OutStretched Hand / landing on the shoulder.
AC and coracoclavicular ligaments are stressed to the point of potential tear.
If complete tear of coracoclavicular ligament, then clavicle could move over acromion and may move inferior… damaging the glenohumeral joint.
Describe Shoulder Dislocation + Anatomical Structures
most vulnerable when arm is in abducted position
the inferior joint capsule does not have any reinforcement from any muscles or ligaments
Humerus pops out inferiorly then moves anteriorly to the glenohumeral joint
Locations of bursae in scapular region
-Subacromial
-Subdeltoid
-Subtendinous of Subscapularis
Muscle(s) Innervated By: Accessory Nerve (CN XI)
Trapezius (M)
Muscle(s) Innervated By: C3-C4
Trapezius (S)
Levator Scapula (S)
Rhomboids (S)
Muscle(s) Innervated By: Dorsal Scapular Nerve (C4-C5)
Levator Scapula (M)
Rhomboids (M)
Muscle(s) Innervated By: Suprascapular Nerve (C4-C6)
Supraspinatus
Muscle(s) Innervated By: Suprascapular Nerve (C5-C6)
Infraspinatus
Muscle(s) Innervated By: Subclavian Nerve (C5-C6)
Subclavius
Muscle(s) Innervated By: Axillary Nerve (C5-C6)
Deltoid
Teres Minor
Muscle(s) Innervated By: Upper & Lower Subscapular Nerve (C5-C6)
Subscapularis
Muscle(s) Innervated By: Lower Subscapular Nerve (C5-C6)
Teres Major
Muscle(s) Innervated By: Long Thoracic Nerve (C5-C7)
Serratus Anterior
Muscle(s) Innervated By: Medial & Lateral Pectoralis Nerve (C5-T1)
Pec Major (claviular head C5-C7 & Sternocostal head C8-T1)
Pec Minor
Muscle(s) Innervated By: Thoracodorsal Nerve (C6-C8)
Latissimus Dorsi
