Scapula bone. Scapula: Anatomy, Function, and Treatment 2022-10-26
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The scapula, also known as the shoulder blade, is a flat, triangular-shaped bone located on the posterior side of the rib cage in the upper back. It plays a vital role in the movement of the shoulder joint, as it acts as a stable base for the upper arm bone (humerus) to rotate and move.
The scapula has three main parts: the body, the acromion, and the coracoid process. The body is the largest part of the scapula and has a smooth, concave surface that faces the rib cage. The acromion is a bony projection located on the top of the scapula and forms the highest point of the shoulder. The coracoid process is a small, hook-like projection located in the front of the scapula, just below the acromion.
The scapula has several important functions in the body. One of its main functions is to provide attachment points for several muscles that help to move the shoulder joint. These muscles include the deltoid, rotator cuff, and trapezius. The scapula also helps to stabilize the shoulder joint and keep it in proper alignment.
Injuries to the scapula are relatively uncommon, but they can occur as a result of a fall or a blow to the shoulder. Common scapula injuries include fractures, sprains, and dislocations. Treatment for these injuries typically involves rest, ice, and physical therapy, and in some cases, surgery may be necessary.
In conclusion, the scapula is a vital bone in the human body that plays a crucial role in the movement of the shoulder joint. It provides attachment points for several muscles and helps to stabilize the shoulder joint. While injuries to the scapula are not common, they can occur and may require treatment to heal properly.
Scapula: Function, Location, Health Problems, and More
Gliding joints allow for a limited range of motion and do not rotate. The movement of the scapula can be described by rotations in relation to the thorax. Reverse Band Flye Band pull-aparts are good for the scapula, but band reverse flies are better. It is innervated by the subscapular nerve. It is thought of all bone fractures that occur, only one percent affect only the scapula. Also present are two major bursae at the scapulothoracic joint: scapulothoracic or infraserratus; between the serratus anterior muscle and chest wall and the subscapularis bursae between the subscapularis muscle and serratus anterior muscle.
The anterior scapula has the coracoid process, which is a projection of bone that aids in support of the clavicle and serves as a site for muscular attachment. A complete understanding of the osseous, muscular, bursal, and neurovascular anatomy along with the biomechanics of normal scapular motion is critical to the evaluation of any patient with shoulder pathology. It is supplied via the dorsal scapular nerve. The muscles you care about are the muscles you can see. This process extends superiorly to articulate with the clavicle. Use a light weight, lift with control, and feel the muscles work here.
The coracoid fossa is one of two processes that together help form the glenoid cavity, a cavity that houses the shoulder joint. Joints The joints connected to your shoulder blades can be affected by inflammation similar to the arthritis commonly seen in other locations of the body. This exam may include visual observation and muscle testing. Both of these moves focus on scapular retraction more on that below , but the banded reverse flye provides a longer range of motion and therefore more tension. Your doctor will perform strength testing of your shoulder and scapular muscles to determine if muscle weakness is contributing to the abnormal scapular motion.
They reside in the shoulder region and sit laterally to the spine. A doctor can determine a fracture with the use of an x-ray image. It is a triangular and flat bone that serves as an attachment site for 17 upper body muscles. Another cause of winging of the scapula is fascioscapulohumeral dystrophy, an autosomal dominant condition affecting several muscles related to the scapula: serratus anterior, rhomboids, trapezius, teres major and minor, pectoralis minor and major, biceps, and triceps muscle. Upward rotation and downward rotation of the scapula assist with stabilization of the shoulder capsule during excessive arm motion. The trapezius muscle implants into the collarbone. Snapping scapula: a review of the literature and presentation of 14 patients.
Acromion The answer is C: Spine 12. Attached to the ridge is a fibrous septum, which separates the The broad and narrow portions above alluded to are separated by an oblique line, which runs from the axillary border, downward and backward, to meet the elevated ridge: to it is attached a fibrous septum which separates the Its lower third presents a broader, somewhat triangular surface, the inferior angle of the scapula, which gives origin to the Figure 2: Left scapula. In humans, it is a flat bone, roughly triangular in shape, placed on a posterolateral aspect of the thoracic cage…. The borders of the scapula are also given proper names. In some species, such as dogs, the clavicle has become vestigial and there is no articulation between the front limbs and the rest of the skeleton.
You may have heard of the scapula before, though it is more commonly called the shoulder blade. This series of connections is how the scapula connects your arms to your trunk. Bone Due to the protection it receives, the scapula bones are not easily fractured as other bones in the body. This prefix is derived from ὦμος ōmos , the Ancient Greek word for shoulder, and is cognate with the Latin h umerus, which in Latin signifies either the shoulder or the upper arm bone. The clavicle articulates with the scapula at the acromion process, a projection of bone found on the posterior surface of the scapula. In Figure 1, what anatomical structure is labeled as 5? Thus, all movements of the arm involve movement or stability provided by the scapula. Maintain proper posture Sometimes the pain near or on the shoulder blade region is caused by not sitting properly or laying in bed at an unfamiliar angle.
As mentioned above, the suprascapular nerve passes beneath the transverse scapular ligament whereas the suprascapular artery travels above the ligament. Scroll down to see your results. If an injury or condition causes these muscles to become weak or imbalanced, it can alter the position of the scapula at rest or in motion. The two fossae are connected by the spinoglenoid notch, situated lateral to the root of the spine. Ligaments are vital to aid in the maintenance of scapula stability. The scapula is also angled anteriorly between 10° and 20° from the coronal plane. An example of this is scapular winging, where damaged muscles or nerves result in a scapula that appears to stick out from the back of the body and is thus not in its proper position.
There are tons of T- Spine extension variations by not many that lock in your lower back and work against gravity like this one. The suprascapular nerve arises from the superior trunk of the brachial plexus and courses towards the suprascapular notch with the suprascapular artery. Osseous Anatomy The scapula is a large, flat, triangular-shaped bone positioned over the posterior thorax between the second and seventh ribs. The suprascapular nerve travels below the transverse scapular ligament whereas the suprascapular artery passes above the ligament. As a result, only the deltoid can move the shoulder and winging of the scapula occurs.