- Bone and Ligament
Also available as a Poster size image. See printing instructions and image restrictions.
Also available as a Poster size image. See printing instructions and image restrictions.
Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
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Muscles
Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
- Bones
- Joints and Articulations
- Glenohumeral joint (GH Joint)
- Glenoid of Scapula meets humeral head
- Golf ball on golf tee
- Articulation with bone: 30%
- Articulation with glenoid labrum: 75%
- Posterior Chest Wall (Scapulothoracic articulation)
- Acromioclavicular Joint (AC Joint)
- Acromion of Scapula meets the clavicle
- Sternoclavicular Joint (SC Joint)
- Four ligaments (in addition to a saddle-like structure) stabilize the joint
- Anterior sternoclavicular ligament
- Posterior sternoclavicular ligament
- Interclavicular ligament
- Costoclavicular ligament
- Four ligaments (in addition to a saddle-like structure) stabilize the joint
- Nerves
- Rotator cuff is innervated by Brachial Plexus derived nerves
- Subacromial Space
- Coracoclavicular arch forms the roof of the subacromial space
- Coracoid process
- Coracoacromial ligament
- Acromion process
- Rotator cuff composition (mnemonic: SITS Muscles)
- Subacromial bursae
- Separates cuff from overlying coracoacromial arch
- Includes subdeltoid bursa and subcoracoid bursa
- Image
- Function
- Scapula stabilized prior to arm movement
- Rotator Cuff (Musculotendinous)
- Steadies humeral head in glenoid
- Results in humeral head descent
- Scapulothoracic Musculature
- Results in forward and lateral Scapula movement
- Initiates first 60-70 degrees of Shoulder Abduction
- Glenohumeral Musculature
- Deltoid and supraspinatus Muscles
- Accounts for last two thirds of Shoulder Abduction
- Muscle action at Glenohumeral joint
- Shoulder Abduction
- Shoulder Adduction
- Shoulder Flexion
- Shoulder Extension
- Shoulder Internal Rotation
- Shoulder External Rotation