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Shoulder Joint

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  • 1. MUSCULOSKELETAL SYSTEM - I Shoulder Girdle Complex
  • 2. Shoulder Complex• The shoulder complex are made up of 4 joints :  Glenohumeral joint  Acromioclavicular (AC) joint  Sternoclavicular (SC) joint  Scapulothoracic joint
  • 3. BONES• The bones that are involve in the formation of the shoulder joint are : Humerus Scapula Clavicle Ribs Sternum
  • 4. MUSCLES• The muscles that were involved in the functional part of the shoulder joint are :PectoralisDeltoidTrapeziusSerratusRhomboids
  • 5. SHOULDER JOINT or GLENOHUMERAL JOINTMultiaxial ball-and-socket joint.The most moveable joint in the body.Articulation of the Glenoid fossa of the Scapula and the head of the Humerus.
  • 6. LIGAMENTS of SHOULDER JOINTCoracohumeral ligament - attaches the coracoid process to the anterior region of the greater tubercle of the humerusTransverse humeral ligament – covers the intertubercular groove.Glenoid labrum – fibrocartilaginous ring that add depth to the Glenoid fossa.
  • 7. BURSAE of SHOULDER JOINTSubdeltoid bursa - (between the joint capsule and deltoid muscle)Subcoracoid bursa - (between joint capsule and coracoid process)Subacromial bursa - (between joint capsule and acromion of scapula)Subscapular bursa - (between joint capsule and tendon of subscapularis muscle, also known as subtendinous bursa of subscapularis muscle)
  • 8. • Made of the synovial membrane of the joint capsule.
  • 9. ACROMIOCLAVICULAR (AC) JOINTJoint at the top of the shoulder.Junction between the acromion (part of the scapula that forms the highest point of the shoulder) and the clavicle.
  • 10. STERNOCLAVICULAR (SC) JOINTArticulation of the clavicle and the manubrium of the sternum.
  • 11. SCAPULOTHORACIC JOINT
  • 12. BLOOD SUPPLY to SHOULDER JOINT• Suprascapular vessels• Anterior & posterior circumflex humeral vessels• Brachial artery• Axillary artery• Subscapular vessels
  • 13. NERVE SUPPLY to SHOULDER JOINT• Axillary nerve• Sub scapular nerve• Musculocutaneous nerve
  • 14. MOVEMENTS of SHOULDER JOINTMovements Main MusclesFlexion Pectoralis major , Anterior deltoidExtension Posterior deltoid , Latissimus dorsiAdduction Pectoralis major , Latissimus dorsi , Short head of biceps , Long head of tricepsAbduction Deltoid , Supraspinatus , Serratus anterior , TrapeziusMedial Rotation Pectoralis major , Anterior deltoid , Latissimus dorsi , Teres majorLateral Rotation Posterior deltoid , Infraspinatus , Teres minor