How many bones in pectoral girdle

Depending on the extent of your condition, rehabilitation for conditions associated with the pectoral girdle include the following:. Arthroscopic surgery of the shoulder is commonly performed for active patients with distal clavicular osteolysis who wish to resume weightlifting and athletic activities without pain.

A distal clavicle resection is often performed where a small portion of the end of the clavicle that has become inflamed is removed to increase the space in the acromioclavicular joint and reduce joint compression and degeneration.

Arthroscopic surgery may also be performed to manage symptoms of acromioclavicular joint arthritis when other treatment methods have failed to relieve pain. Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Hansen, JT. Chapter 7; Upper Limb. In Hansen JT, ed. Harvard Medical School. Harvard Health Publishing. Shoulder sprain. Updated April Hospital for Special Surgery. American Academy of Orthopedic Surgeons.

Scapular shoulder blade disorders. Updated March Your Privacy Rights. To change or withdraw your consent choices for VerywellHealth. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page.

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Common Causes and Treatments for a Separated Shoulder. Was this page helpful? Thanks for your feedback! You can easily palpate, or feel with your fingers, the entire length of your clavicle. Pectoral Girdle The pectoral girdle consists of the clavicle and the scapula, which serve to attach the upper limb to the sternum of the axial skeleton. The scapula shoulder blade lies on the posterior aspect of the shoulder. It is supported by the clavicle , which also articulates with the humerus arm bone to form the shoulder joint.

The scapula is a flat, triangular-shaped bone with a prominent ridge running across its posterior surface. This ridge extends out laterally, where it forms the bony tip of the shoulder and joins with the lateral end of the clavicle. By following along the clavicle, you can palpate out to the bony tip of the shoulder, and from there, you can move back across your posterior shoulder to follow the ridge of the scapula.

Move your shoulder around and feel how the clavicle and scapula move together as a unit. Both of these bones serve as important attachment sites for muscles that aid with movements of the shoulder and arm.

The right and left pectoral girdles are not joined to each other, allowing each to operate independently. In addition, the clavicle of each pectoral girdle is anchored to the axial skeleton by a single, highly mobile joint.

This allows for the extensive mobility of the entire pectoral girdle, which in turn enhances movements of the shoulder and upper limb. The clavicle is the only long bone that lies in a horizontal position in the body see [link].

The clavicle has several important functions. First, anchored by muscles from above, it serves as a strut that extends laterally to support the scapula. This in turn holds the shoulder joint superiorly and laterally from the body trunk, allowing for maximal freedom of motion for the upper limb. The clavicle also transmits forces acting on the upper limb to the sternum and axial skeleton.

Finally, it serves to protect the underlying nerves and blood vessels as they pass between the trunk of the body and the upper limb. The clavicle has three regions: the medial end, the lateral end, and the shaft.

The medial end, known as the sternal end of the clavicle , has a triangular shape and articulates with the manubrium portion of the sternum. This forms the sternoclavicular joint , which is the only bony articulation between the pectoral girdle of the upper limb and the axial skeleton.

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. There are some sex differences in the morphology of the clavicle. In women, the clavicle tends to be shorter, thinner, and less curved. In men, the clavicle is heavier and longer, and has a greater curvature and rougher surfaces where muscles attach, features that are more pronounced in manual workers.

The clavicle is the most commonly fractured bone in the body. Such breaks often occur because of the force exerted on the clavicle when a person falls onto his or her outstretched arms, or when the lateral shoulder receives a strong blow.

Because the sternoclavicular joint is strong and rarely dislocated, excessive force results in the breaking of the clavicle, usually between the middle and lateral portions of the bone. If the fracture is complete, the shoulder and lateral clavicle fragment will drop due to the weight of the upper limb, causing the person to support the sagging limb with their other hand.

Muscles acting across the shoulder will also pull the shoulder and lateral clavicle anteriorly and medially, causing the clavicle fragments to override. The clavicle overlies many important blood vessels and nerves for the upper limb, but fortunately, due to the anterior displacement of a broken clavicle, these structures are rarely affected when the clavicle is fractured. The scapula is also part of the pectoral girdle and thus plays an important role in anchoring the upper limb to the body.

The scapula is located on the posterior side of the shoulder. It is surrounded by muscles on both its anterior deep and posterior superficial sides, and thus does not articulate with the ribs of the thoracic cage. The scapula has several important landmarks [link]. The three margins or borders of the scapula, named for their positions within the body, are the superior border of the scapula , the medial border of the scapula , and the lateral border of the scapula.

Your pectoral girdles are responsible for providing structural support to your shoulder region on the left and right side of your body.

They also allow for a large range of motion, connecting muscles necessary for shoulder and arm movement. This allows for your shoulder and arms to move and function independently. The clavicle or collarbone is an S-shaped bone situated at the front of your body in a horizontal position. It supports your shoulder, encourages a full range of motion, and protects your nerves and blood vessels that pass between the trunk of your body and your upper limbs.

Your clavicle provides the only direct connection between your pectoral girdle and axial skeleton. There are also some physical differences in men and women. Unlike your clavicle, the scapula bone or shoulder blade is located at the back of your shoulder. The scapula provides an attachment point for a number of muscles in your shoulder and upper limbs to your neck and back.

Injury or fracture to the scapula is uncommon, but can occur from severe chest trauma, sports injuries , or car collisions. Sports injuries can happen during regular exercise or while playing a sport. Find out all…. A recessed maxilla can cause cosmetic issues like flat cheekbones and a prominent jaw, and lead to dental problems, speech issues, and obstructed….

If you do tear a meniscus, you might be tempted to "walk it off.