Shoulder Complex Anatomy
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IAP Musculoskeletal Series
Christian Orense, PTRP
The Shoulder Complex
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BONES FORMING THE SHOULDER GIRDLE
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Clavicle• S-shaped, strut bone
• Medial 1/3 convex anteriorly
• Round Sternal end
• Flat Acromial EndWednesday, January 18, 12
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Scapula
• shoulder blade, located between T2-T7
• Acromion Process- highest point
• Receptacle for humerus
• Point of origin and insertion of several muscles
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Bony Landmarks
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Bony Landmarks of the Scapula (Posterior View)
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Bony Landmarks of the Scapula (Anterior View)
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Lateral View of the
Scapula
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Humerus
• longest, largest bone of the UE
• Articulates proximally with the scapula, distally with the ulna and radius
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The 6 Joints of the Shoulder Complex
• Glenohumeral
• Acromioclavicular
• Sternoclavicular
• Suprahumeral
• Bicipital Groove
• Scapulothoracic
3 True Joints 3 Functional Joints
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Acromioclavicular Joint
• Bony Articulations
• Type of Joint
• Degrees of Freedom
• Motions
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Glenohumeral Joint
• Bony articulations
• Type of Joint
• Degrees of Freedom
• Motions
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Sternoclavicular Joint
• Bony articulations
• Type of Joint
• Degrees of Freedom
• Motions
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MUSCLES OF THE UE CONNECTING TO
• THE THORAX
• THE VERTEBRAL COLUMN
• SCAPULA TO HUMERUS
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MUSCLES: UE TO THE THORACIC WALL
• PECTORALIS MAJOR• PECTORALIS MINOR• SUBCLAVIUS• SERRATUS ANTERIOR
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UE TO THORACIC WALL
SUBCLAVIUS
PECTORALIS MINOR
PECTORALIS MAJOR
SERRATUS ANTERIOR
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MM: UE TO THE VERTEBRAL COLUMN
• TRAPEZIUS• LATISSIMUS DORSI• LEVATOR SCAPULAE• RHOMBOID MINOR &
MAJOR
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TO VERTEBRAL COLUMN
TRAPEZIUS
RHOMBOID MINOR
RHOMBOID MAJOR
LATISSIMUS DORSIWednesday, January 18, 12
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SCAPULA TO HUMERUS
• DELTOID• SUPRASPINATUS• INFRASPINATUS• TERES MAJOR• TERES MINOR• SUBSCAPULARIS
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MUSCLES ATTACHED TO THE HUMERUS & SCAPULA
• BICEPS BRACHII• BRACHIALIS• TRICEPS BRACHII• CORACOBRACHIALIS
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DELTOID
PECTORALIS MAJOR
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SUPRASPINATUS
INFRASPINATUS
TERES MINOR TERES
MAJOR
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BRACHIAL PLEXUS
• NERVES THAT ARE ABOUT TO ENTER THE UPPER LIMB
• FORMED IN THE POSTERIOR TRIANGLE OF THE NECK• PROVIDING SENSORY AND
MOTOR INNERVATION
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BRACHIAL PLEXUS
• DIVIDED INTO:• ROOTS• TRUNKS• DIVISIONS• CORDS
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THE BRACHIAL PLEXUS
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LET’S HAVE A REVIEW
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JOINTS
• ARTICULATING SURFACES
• TYPE
• MOTIONS
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MUSCLE GROUPS
• FLEXORS
• EXTENSORS
• ABD/ADDUCTORS
• IR/ER
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