Sterno-clavicular and acromio-clavicular joint

A presentation on SC and Ac joint of shoulder girdle. Hope it will help who's need.... Thank You.

1. Welcome To My Presentation Abid Hasan Khan

2. Presented By… Abid Hasan Khan Year: 2nd Session : 2015-16 Department of Physiotherapy Bangladesh Health Professions Institute (BHPI), CRP- Chapain , Savar , Dhaka – 1343. Abid Hasan Khan

3. Topic The Sternoclavicular joint & the Acromioclavicular joint Abid Hasan Khan

4. Contents… Definition Capsule properties Capsule reinforcers- i ) Muscl e ii ) Ligaments iii ) Neurovascular Supply Movements of the joint Physiological i mportance Injuries of the joint Abid Hasan Khan

5. The Sternoclavicular joint Abid Hasan Khan

6. The Sternoclavicular joint The Sternoclavicular joint is a saddle type of synovial joint between the sternal end of clavicle & the manubrium of sternum with the articulation of 1 st costal cartilage.   Abid Hasan Khan

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8. Capsule properties Strong joint capsule- Consists of the  sternal end of the clavicle, the manubrium of the sternum & part of the 1 st costal cartilage . The articular surfaces are covered with fibro-cartilage . The joint is separated into two compartments by a fibro-cartilaginous  articular disc. Abid Hasan Khan

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10. Capsule reinforcers Muscle: Subclavius muscle : Originates at costal cartilage of first rib Inserts on inferior aspect of clavicle . Abid Hasan Khan

11. Continues…. Ligaments : There are three major ligaments present in the Sternoclavicular joint : Posterior and anterior sternoclavicular ligament . Interclavicular ligament . Costoclavicular ligament . Abid Hasan Khan

12. Continues…. Neurovascular Supply : Arterial supply to the sternoclavicular joint is from the internal thoracic artery and the suprascapular artery. The veins of the joint follow the major arteries. The joint is supplied by the medial supraclavicular nerve (C3 and C4) and the nerve to subclavius (C5 and C6). Abid Hasan Khan

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14. Movements of the joint The Sternoclavicular joint has a large degree of mobility. There are several movements that require this joint involvement : Elevation Depression Retraction Protraction Rotation Abid Hasan Khan

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16. Continues…. Movements Muscles Elevation Upper Trapezius , Levator Scapulae Depression Lower Trapezius , Pectoralis Minor Adduction (Retraction ) Middle Trapezius , Rhomboids Abduction (Protraction ) Serratus Anterior Upward Rotation Upper & Lower Trapezius , Serratus Anterior Downward Rotation Rhomboids, Pectoralis Minor, Levator Scapulae Abid Hasan Khan

17. Physiological i mportance The Sternoclavicular (SC) joint is important because it helps to support the shoulder. The SC joint links the bones of the arms and shoulder to the vertical skeleton . Abid Hasan Khan

18. Injuries of the joint Dislocation of the clavicl e Sprains Fractures Degenarative arthritis Abid Hasan Khan

19. The Acromioclavicular joint Abid Hasan Khan

20. The Acromioclavicular joint The Acromioclavicular (AC) joint is a plane type of synovial joint which is a top joint at the shoulder. It is the junction between the acromion of scapula and the clavicle. Abid Hasan Khan

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22. Capsule properties The joint capsule consists of a loose fibrous layer which encloses the two articulation surfaces. It also give rise to the articular disk. Abid Hasan Khan

23. Continues…. The joint mainly consists of an articulation between the acromion of scapula and the lateral end of clavicle. Abid Hasan Khan

24. Continues…. It has two atypical features : The articular surfaces of the joint are lined with fibrocartilage (as opposed to hyaline cartilage). The joint cavity is partially divided by an articular disc. Abid Hasan Khan

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26. Capsule reinforcers Muscle : There’s no muscle connects the bones to move the joint. The Clavicle serves as an attachment for many of the muscles that act on the joint’s movements. These include: Pectoralis Major ( Clavicular head) Sternocleidomastoid Deltoid Trapezius Abid Hasan Khan

27. Continues…. Ligaments : There are three major ligaments present in the acromioclavicular joint: Acromioclavicular ligament Conoid ligament Trapezoid ligament Abid Hasan Khan

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29. Continues…. Neurovascular Supply – Vessels : The arterial supply to the joint is via two vessels: Suprascapular artery Thoraco-acromial artery Abid Hasan Khan

30. Continues…. Nerves : The acromioclavicular joint is innervated by articular branches of the  suprascapular and lateral pectoral nerves. They both arise directly from the brachial plexus. Abid Hasan Khan

31. Movements of the joint The AC joint allows a degree of axial rotation and anteroposterior movement . As no muscles act directly on the joint, all movement is passive, and is initiated by movement at other joints (such as the sternoclavicular joint). Abid Hasan Khan

32. Continues…. Muscles which move the scapula cause it to move on the clavicle. Scapular movements on the chest wall fall into three groups: Protraction and retraction around the chest wall Rotation Elevation or depression. Abid Hasan Khan

33. Physiological importance The AC joint provides the ability to raise the arm above the head. This joint functions as a pivot point acting like a strut to help with movement of the scapula resulting in a greater degree of arm rotation. Abid Hasan Khan

34. Injuries of the joint Dislocation of the clavicle Sprains Fractures Degenarative arthritis Abid Hasan Khan

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