What is the sternal end of clavicle?

What is the sternal end of clavicle?

The medial end is also known as the sternal end. It is quadrangular and articulates with the clavicular notch of the manubrium of the sternum to form the sternoclavicular joint. The articular surface extends to the inferior aspect for articulation with the first costal cartilage.

Which bone articulates with the clavicle at its sternal end?

The clavicle is an anterior bone whose sternal end articulates with the manubrium of the sternum at the sternoclavicular joint. The sternal end is also anchored to the first rib by the costoclavicular ligament. The acromial end of the clavicle articulates with the acromion of the scapula at the acromioclavicular joint.

What is a sternal end?

Sternal or medial end (extremitas sternalis) is the rounded end of the clavicle that articulates with the manubrium of the sternum. [

What ligament attaches to sternal end of clavicle?

The costoclavicular ligament’s orientation to the SC joint, anchoring the inferior surface of the sternal end of the clavicle to the first rib, serves as the primary restraint for the SC joint. The subclavius muscle also functions to provide joint stability.

Where is the sternal end of clavicle located?

What are the two ends 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). Each end has unique bony landmarks, depending whether the superior or inferior surface of the bone is viewed.

What bone does the clavicle articulate with?

scapula The clavicle articulates with the scapula here, at the tip of the acromion.

Which 2 bones does the clavicle articulate with?

The clavicle articulates at one end with the sternum (chest bone) and with the acromion of the scapula at the other.

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How does the sternum articulate with the clavicle?

The clavicular notches of the sternum articulate with the medial end of each clavicle to form the sternoclavicular joints. The manubrium sterni also articulates with the costal cartilages of the 1st pair of ribs.

What’s a sternal?

Your sternum is a bone that’s located in the middle of your chest. It’s also sometimes referred to as the breastbone. Your sternum protects the organs of your torso from injury and also serves as a connection point for other bones and muscles.

How many sternal end bones are there?

eight sternebrae The sternum (Figure 7.16) consists of eight sternebrae arranged anteroposteriorly midventrally on the thorax.

What is sternal region?

The sternum or breastbone is a long flat bone located in the central part of the chest. It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury.

What ligaments are attached to the clavicle?

The clavicle has two ligaments involving the shoulder that help with stabilizing it to nearby bony structures: The acromioclavicular ligament and the coracoclavicular ligament both stabilize the clavicle to the shoulder blade.

What ligaments are involved with the sternoclavicular joint?

Sternoclavicular joint

Type Synovial saddle joint; multiaxial
Ligaments Intrinsic ligaments: anterior and posterior sternoclavicular ligaments Extrinsic ligaments: interclavicular and costoclavicular ligaments
Innervation Medial supraclavicular nerve, nerve to subclavius

What is sternoclavicular ligament?

The anterior sternoclavicular ligament is a broad band of fibers, covering the anterior (front) surface of the joint between the sternum and clavicle (sternoclavicular articulation).

Which region of the clavicle is known as the Acromial end?

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.

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Where is the sternum located?

The sternum is a flat bone located in the centre of the anterior thoracic wall. It consists of three segments; Manubrium (uppermost part, see image at R) Body (middle part) and.

Where is the sternal angle?

The sternal angle (angle of Louis) is the anterior angle formed by the junction of the manubrium and the body of the sternum which varies around 162 degrees in males.

What two structures connect the clavicle and scapula?

The acromial end of the clavicle articulates with the acromion of the scapula at the acromioclavicular joint. This end is also anchored to the coracoid process of the scapula by the coracoclavicular ligament, which provides indirect support for the acromioclavicular joint.

What is acromial end?

Description. The acromial end (acromial extremity) presents a small, flattened, oval surface directed obliquely downward, for articulation with the acromion of the scapula. The circumference of the articular facet is rough, especially above, for the attachment of the acromioclavicular ligaments.

What is a distal clavicle?

During the procedure, the end of the clavicle closest to the acromion in the shoulder is removed to allow pain-free movement of the joint. A distal clavicle excision is a surgical procedure performed to relieve pain in the acromioclavicular (AC) joint, which often develops because of a fall or other type of trauma.

What bone does the clavicle articulate with quizlet?

What bones does the clavicle articulate with? The sternum (medially, to form the sternoclavicular joint), and the scapula laterally to form the acromioclavicular joint. You just studied 92 terms!

What part of the clavicle articulates with the humerus?

The scapula articulates with the humerus at the glenoid fossa and the clavicle at the acromion process.

How the clavicle curves and articulates with other bones?

Medially, it articulates with the manubrium of the sternum (breast-bone) at the sternoclavicular joint. … From the roughly pyramidal sternal end, each clavicle curves laterally and posteriorly for roughly half its length. It then forms a smooth posterior curve to articulate with a process of the scapula (acromion).

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What two bones articulate the glenoid cavity?

At the glenoid cavity, the scapula articulates with the humerus, the proximal bone of the upper limb. This articulation, also known as the glenohumeral joint, is the shoulder joint.

What does the body of the sternum articulate with?

The sternum articulates with the clavicles and costal cartilages of the ribs. It also covers and protects the heart.

What bones articulate with the clavicle and how )? Where does the Sternocleidomastoid originate from on the clavicle?

Origin and insertion The sternal head originates from the manubrium sterni, while the clavicular head from the medial third of the clavicle. The insertion is the lateral surface of the mastoid process of the temporal bone and the lateral half of the superior nuchal line of the occipital bone.

What type of joint is the clavicle and scapula articulation?

synovial joint The acromioclavicular joint is a diarthrodial joint defined by the lateral clavicle articulating with the acromion process as it projects anteriorly off the scapula. The AC joint is a plane type synovial joint, which under normal physiological conditions allows only gliding movement.