The lateral or acromial end of the clavicle articulates with the acromion of the scapula, the portion of the scapula that forms the bony tip of the shoulder.
What is the function of acromial?
The acromion of the scapula is a large bony projection on the superior end of the scapula. It is an important landmark of the skeletal system and a muscle attachment point essential to the function of the shoulder joint. The acromion also forms the acromioclavicular (AC) joint with the clavicle.
What is acromial extremity of clavicle?
The conoid tubercle is found on the lateral end (acromial extremity) of the clavicle, and is located posteriorly. It is the attachment point for the conoid ligament, which attaches to the coracoid process of the scapula and reinforces the joint between these two bones.
Where is the acromial bone?
The acromion is the bony tip of the outer edge of your shoulder blade (scapula) that comes off the top of the back side of this bone. It meets with the end of your collar bone (clavicle) at your shoulder. Shoulder impingement occurs when the tendon rubs against the acromion.
What is conoid tubercle?
The conoid tubercle also known as the coracoid tuberosity (not to be confused with the coracoid process of the scapula) is a bony prominence on the inferior surface of the lateral third of the clavicle.
What is the end of the clavicle called?
The orientation of the clavicle can be distinguished by its ends: a broad, flat acromial end (referred to as the lateral third); and a round pyramidal-like sternal end (referred to as the medial two-thirds).
What is the bump on the clavicle called?
An aneurysmal bone cyst of the clavicle is one rare type of tumor that can form, usually in people under the age of 20 . Some people may develop a non-cancerous, soft tumor called a lipoma near the collarbone.
Why is the acromion important?
The acromion process serves as the point of attachment for the deltoid muscle, which is the major muscle that allows us to lift or abduct our arms.
What is scapula and acromion?
In human anatomy, the acromion (from Greek: akros, “highest”, ōmos, “shoulder”, plural: acromia) is a bony process on the scapula (shoulder blade). Together with the coracoid process it extends laterally over the shoulder joint. The acromion is a continuation of the scapular spine, and hooks over anteriorly.
What is the acromion of the shoulder?
Acromion. The roof (highest point) of the shoulder that is formed by a part of the scapula.
Why clavicle is called beauty bone?
Functional anatomy of clavicle. The clavicle, or collarbone, is also referred to as “beauty bone” because of its prominent body location. It is the only long bone that lies horizontally in the body. The shape of the clavicle appears elongated ‘S’ due to its unique anterior and posterior curvatures.
What is the weakest part of the clavicle?
Most common site of fracture is the middle third segment of the clavicle because its weakest point is at the junction of the middle and lateral third of the clavicle.
What is the ACJ?
ACJ stands for acromioclavicular (AC) joint, which is where your collarbone (clavicle) joins your shoulder blade at the acromion. The AC joint allows you to move your arm above your head and across your body and is used in pushing, pulling and lifting movements.
Can the acromion break?
Acromion fractures are rare injuries. They constitute 8%–16% of scapula fractures,. Recently, they are seen at the rate of 5%–6.9% as the complication of reverse shoulder arthroplasty. Acromion fractures may occur as a result of shoulder trauma and overuse injuries.
