What is the edge of the shoulder called?
What is the edge of the shoulder called?
scapula
The scapula (shoulder blade). It is responsible for stabilizing the upper arm bone, which sits in a shallow socket on the outer edge of the shoulder blade.
What are the 3 borders of the scapula?
The scapula has three angles (superior/medial, lateral, inferior), three borders (medial, lateral/axillary, and superior), and two surfaces (ventral and dorsal). The scapula has three processes: the acromion, the spine, and the coracoid process.
Where is the superior border of the scapula?
coracoid process
Of the three borders of the scapula, the superior border is the shortest and thinnest; it is concave, and extends from the medial angle to the base of the coracoid process. At its lateral part is a deep, semicircular notch, the scapular notch, formed partly by the base of the coracoid process.
What causes medial border winging?
Medial winging is more common, being caused by serratus anterior paralysis. This is typically due to damage (i.e. lesions) of the long thoracic nerve. This nerve supplies the serratus anterior, which is located on the side of the thorax and acts to pull the scapula forward.
What is the anatomy of a shoulder?
The shoulder is made up of three bones: the scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone). Two joints in the shoulder allow it to move: the acromioclavicular joint, where the highest point of the scapula (acromion) meets the clavicle, and the glenohumeral joint.
Where is a labrum tear located?
The shoulder labrum is a thick piece of tissue attached to the rim of the shoulder socket that helps keep the ball of the joint in place. The labrum can tear a few different ways: 1) completely off the bone, 2) within or along the edge of the labrum, or 3) where the bicep tendon attaches.
Where is the axillary border of scapula?
The axillary border of the scapula is the thickest of the three borders of the scapula bone. It extends down from the lower margin of the glenoid cavity all the way along the lateral edge of the scapula to the inferior angle.
What is a medial border?
Description. The medial border (vertebral border) is the longest of the three, and extends from the medial to the inferior angle. It is arched, intermediate in thickness between the superior and the axillary borders, and the portion of it above the spine forms an obtuse angle with the part below.
What is superior border of scapula?
The superior border extends from the superior angle laterally towards the coracoid process. The lateral or axillary border runs from the inferior angle to the lateral angle of the scapula. Medial Border. This is thin and extends from superior to inferior angle.
Do push ups help winged scapula?
Physical therapists rely on exercises like scapular push-ups to help correct winged scapula, a condition where the scapula muscles are weak, causing them to protrude like wings. Scapular push-ups improve shoulder mobility. Working out this muscle group helps keep your shoulders strong and healthy.
Can a winged scapula be fixed?
Surgical treatment. The most common surgical treatments for scapular winging are nerve and muscle transfers. These surgeries involve taking all or part of a nerve or muscle and moving it to another part of the body. Nerve and muscle transfers for scapular winging usually focus on the shoulder, back, or chest.
Where is the CR located in the shoulder?
CR perpendicular to IR, centered to scapulohumeral joint, which is approximately 2 inches (5cm) inferior and medial form the superolateral border of shoulder. Collimate so upper and lateral borders of the field are to the soft tissue margins.
Which is the most common shoulder joint separation?
Acromioclavicular (AC) joint separation is a common shoulder injury, representing up to 9% of all shoulder injuries [8, 19]. The majority of AC injuries (44%) occur in people in their twenties and are five times more common in men than in women [19].
Is the scapula part of the shoulder girdle?
The scapula, classified as a flat bone, forms the posterior part of the shoulder girdle (Figs. 5-3 and 5-4). Triangular in shape, the scapula has two surfaces, three borders, and three angles. Lying on the superoposterior thorax between the second and seventh ribs, the medial border of the scapula runs parallel with the vertebral column.
How big is the central ray of the shoulder?
Central Ray: CR perpendicular to IR, centered to scapulohumeral joint, which is approximately 2 inches (5cm) inferior and medial form the superolateral border of shoulder. Minimum SID of 40 inches (100cm)
