The scapula is described as having superior, medial, and lateral borders. Posteriorly, the scapula is divided into a supraspinous fossa and infraspinous fossa by the scapular spine. Anteriorly, on the costal surface, is the shallow subscapular fossa. Laterally is the glenoid fossa.

What are the 3 fossa of the scapula?

The scapula is described as having superior, medial, and lateral borders. Posteriorly, the scapula is divided into a supraspinous fossa and infraspinous fossa by the scapular spine. Anteriorly, on the costal surface, is the shallow subscapular fossa. Laterally is the glenoid fossa.

What muscles attach to the lateral border of the scapula?

Real Bone. Lateral border or margin (Margo lateralis) is the lateral edge of the scapula. The teres minor muscle attaches along this surface, which is also called the axillary border.

What muscles attach to the acromion process?

Two major muscles, the deltoid and trapezius, attach to the acromion. The deltoid, which abducts the arm at the shoulder, forms its origin along the acromion, the spine of the scapula, and the clavicle. From these origins, it crosses the shoulder joint and inserts on the deltoid tuberosity of the humerus.

What muscles attach to the inferior angle of the scapula?

The serratus anterior muscle surrounds the superior and inferior angles of the scapula and is thus attached to both the surfaces of the bone at these sites.

Where is the subscapularis muscle?

scapula
Subscapularis is a triangular shoulder muscle located in the subscapular fossa of scapula. Attaching between the scapula and the proximal humerus, it is one of the four muscles of the rotator cuff, along with supraspinatus, infraspinatus and teres minor.

What does it mean when your scapula hurts?

The most common cause of shoulder blade pain is muscle strain. 2 That’s often from short-term overuse of your arms and upper body. The scapula pain may be accompanied by pain in other muscle groups. That can include the shoulder and back.

What muscles do scapular retraction?

Retraction is accomplished by the actions of the trapezius, rhomboids, and latissimus dorsi muscles. The elevation is accomplished by the trapezius, levator scapulae, and rhomboid muscles.

Why does my acromion hurt?

What is shoulder impingement syndrome? Shoulder impingement occurs when the top outer edge of your shoulder blade, called the acromion, rubs against (“impinges on”) or pinches your rotator cuff beneath it, causing pain and irritation.

What causes acromion pain?

Shoulder Injuries Injuries are one of the most prevalent causes of acromion pain. When you fall, either onto your shoulder or an outstretched arm, you risk spraining the ligaments that connect your acromion to the other bones in your shoulder, including the coracoclavicular ligaments.

What muscles elevate the scapula?

The elevation is accomplished by the trapezius, levator scapulae, and rhomboid muscles. Depression is accomplished through the force of gravity and the actions of the latissimus dorsi, serratus anterior, pectoralis major and minor, and the trapezius muscles.

What causes pain in the shoulder blade?

The most common cause of pain between the shoulder blades is muscle strain. It’s caused by poor posture (like leaning forward when you sit), frequent lifting, or sports that involve twisting. Other causes include: Trauma.

What does subscapularis pain feel like?

Subscapularis tendonitis symptoms include pain when moving the shoulder especially when the arm is raised above the shoulders. An overworked subscapularis muscle may make you feel like you are not able to lift your arm. It may be even responsible for your frozen shoulder.

What are the symptoms of a subscapularis trigger point?

Shoulder pain and limited range of motion are the hallmarks of subscapularis trigger points. Pain is usually concentrated near the back of the shoulder. In addition, pain and tightness often travel down the arm, skipping the elbow and causing pain on the top side of the wrist and forearm.

How can I release tightness in the subscapularis?

You can also learn to release tightness in the subscapularis by slowly and firmly stretching it using the the middle hand positions in the doorway. It is a little like a doorway stretch to open your chest. However, in this stretch, you are externally rotating your upper arm and stretching the subscapularis.

What is the subscapularis?

The subscapularis is a muscle in your shoulder that helps you internally rotate your arm. When your arm is internally rotated, it means that your palm is facing back, behind your body. The subscapularis is the largest muscle in the rotator cuff, which is a group of muscles that attaches your upper arm to your shoulder.

Why is my subscapularis muscle red and painful?

The darker the red, the more common it is to experience pain if the subscapularis contains active trigger points. If you suffer from tenderness in the subscapularis muscle you may be unable to lift your arm more than a 45° angle.