Where is scapular spine

As the name implies, it is on the deep side of the scapula. The subscapular fossa of the scapula is of functional importance because it is the origin for: the subscapularis muscle one of the four rotator cuff muscles.

The top of the iliac crests also marks the level of the fourth lumbar vertebral body L4 , above or below which lumbar puncture may be performed. Pointing laterally forward, it, together with the acromion, serves to stabilize the shoulder joint. Latissimus dorsi attaches to the inferior angle of the scapula.

Type 1, Direct Attachment : muscular slips are anchored directly onto the inferior angle of the scapula. Type 2a, Indirect Attachment : few muscle fibres with a soft, fibrous link between the two fascia. Where is the spine of the scapula?

Category: medical health bone and joint conditions. The spine of the scapula or scapular spine is a prominent plate of bone, which crosses obliquely the medial four-fifths of the scapula at its upper part, and separates the supra- from the infraspinatous fossa. What is the main function of the scapula? How does the scapula work? Why does my scapula hurt? Musculoskeletal Causes.

Which feature lies between the spine and superior border of the scapula? What does the scapula connect to?

The supraspinatus muscle originates from the middle of this area. It is much smaller than the infraspinous fossa, bearing the spinoglenoid fossa on its side. The fossa houses the suprascapular canal, connecting the suprascapular notch and the spinoglenoid notch conveying the suprascapular nerve and vessels. Infraspinous fossa: It is the area below the spine of the scapula. It is convex and much larger than the preceding one. At its upper part, towards the vertebral margin, it shows a shallow concavity.

In the center, it is convex, while near the lateral border, it has a deep groove running from the upper toward the lower part. Acromion: It is a large bony projection on the upper end of the scapula. It arches over the shoulder joint, articulating with the clavicle at the acromioclavicular AC joint. As the scapula has a large surface area, a large number of muscles get attached to it.

The 17 muscles attached here, fix the scapula to the thoracic wall and allow it to move. Four muscles, namely subscapularis, infraspinatus, teres minor, and supraspinatus, form the rotator cuff, covering the shoulder capsule.

These muscles are listed below and classified based on whether they originate from the scapula or insert into it. First, hold the bone at the inferior angle and orient it in a way so that the convex posterior surface faces you. In this position, the glenoid cavity faces laterally outward, and the spine is clearly visible.

Another way to identify the side is to observe which side the glenoid cavity is facing. While holding the bone in the position mentioned above, if the glenoid cavity faces right according to your body, that is the right scapula and vice versa. The muscles that stabilize the scapula are the serratus anterior, rhomboids, levator scapulae, and trapezius muscles.

No, the scapula is not a part of the axial skeleton. Yes, the scapula is a part of the appendicular skeleton. Musculoskeletal Causes The most common cause of shoulder blade pain is a muscle strain.

Short-term overuse of your arms and upper torso may be experienced in your scapula. Other muscular conditions which may cause shoulder blade pain include rotator cuff tears and a condition known as snapping scapula syndrome. The scapula is commonly referred to as the shoulder blade.

It connects the humerus bone of the arm to the collarbone. There are only three muscles that are responsible for enabling the movement of the shoulder blade. The trapezius muscle implants into the collarbone. Latissimus dorsi attaches to the inferior angle of the scapula. Type 1, Direct Attachment : muscular slips are anchored directly onto the inferior angle of the scapula.

Type 2a, Indirect Attachment : few muscle fibres with a soft, fibrous link between the two fascia. On top of that, the scapula has three processes , the acromion, the spine, and the coracoid process. The scapula bears two marked processes : the acromion and, rather less obvious, the coracoid. The acromion springs like the head of a golf club from the spine of the scapula , extends anterior to the glenoid fossa and carries a small subsidiary process , the metacromion.

Pointing laterally forward, it, together with the acromion, serves to stabilize the shoulder joint. Connecting with the cervical spine above and the lumbar spine below, the thoracic spine runs from the base of the neck down to the abdomen. Although care has been taken when compiling this page, the information contained might not be completely up to date. Accuracy cannot be guaranteed. This material is copyright. See terms of use. IvyRose Holistic Toggle navigation More.