What does the dorsal scapular artery supply?

The dorsal scapular artery (DSA) supplies the levator scapulae and rhomboid muscles, and contributes to the arterial anastomosis around the scapula.

What artery supplies subscapularis?

Posterior circumflex humeral artery supplying the subscapularis muscle.

Where is the transverse cervical artery?

neck The transverse cervical artery arises from the thyrocervical trunk and can be located at the root of the neck accompanied by the transverse cervical vein (see Figure 4.1).

What does the dorsal scapular nerve do?

The DSN is a motor nerve that innervates the levator scapulae, rhomboid major, and rhomboid minor muscles. These muscles work dynamically and collectively are considered periscapular stabilizing muscles. Individually they can retract and elevate the scapula.

Where is dorsal scapular artery located?

The scapular dorsal artery (DSA) is usually described as the last branch of the subclavian artery (SCA). In this case its origin is located below the anterior scalenus muscle.

What artery supplies the infraspinatus?

The infraspinatus is supplied arterially by the suprascapular and circumflex scapular arteries. The suprascapular artery either originates from the thyrocervical trunk or the subclavian artery.

What artery supplies the rotator cuff?

The major arterial supply to the rotator cuff is derived from the ascending branch of the anterior humeral circumflex artery, the acromial branch of the thoracoacromial artery, as well as the suprascapular and posterior humeral circumflex arteries.

Where does the dorsal scapular nerve come from?

The dorsal scapular nerve originates from the fifth cervical spinal nerve (ventral ramus) in the majority (75%) of cases, within the posterior cervical triangle deep to the prevertebral fascia. However, this nerve may also receive some contributions from C4 to T1.

Is the transverse cervical artery the same as dorsal scapular artery?

The dorsal scapular artery is a branch of either the transverse cervical artery (from the thyrocervical trunk off the first part of the subclavian artery) or an independent branch from the third (or less commonly second) part of the subclavian artery.

What artery supplies trapezius?

It was found that there are two main patterns of vascular supply to the trapezius, and that the muscle is principally supplied by three vascular sources: the transverse cervical artery, the dorsal scapular artery, and the posterior intercostal arterial branches.

What is a transverse cervical artery?

The transverse cervical artery (transverse artery of neck or transversa colli artery) is an artery in the neck and a branch of the thyrocervical trunk, running at a higher level than the suprascapular artery.

What does dorsal scapular nerve pain feel like?

Typically, a person will complain of pain down the inside border of the scapula on one side, pain across the shoulder blades, lower neck, shoulder, and/or arm pain. It often feels like burning, sharp, stabbing, shooting, or knife-like pain and may feel like it’s actually underneath the shoulder blade.

How do you fix dorsal scapular nerve pain?

Using ART to relax the muscles irritating the nerves and to make sure the nerve is sliding freely alongside those muscles is the key to resolving a Dorsal Scapular Nerve Entrapment.

How do you treat dorsal scapular nerve pain?

Active Release Technique has proven to be a very effective treatment method in breaking up those adhesions and trigger points around the neck and shoulder blade. While the entrapment most commonly occurs at the neck, treatment must also include looking at scapular movement when going through shoulder ranges of motion.

Are the rhomboids under the trapezius?

The rhomboid muscles, located on your upper back underneath the trapezius muscle, play a big part when it comes to posture. This is especially true if you have overdeveloped chest muscles or your shoulders pronate forward. The rhomboids are rhombus-shaped and are used to pull the shoulder blades together.

What artery supplies deltoid?

The posterior circumflex humeral artery was the most important artery. It supplied the posterior and middle parts of the deltoid muscle. The anterior circumflex humeral artery supplied the anterior part of the deltoid muscle in 63%.

What are the nerve roots of the dorsal scapular nerve?

The dorsal scapular nerve arises from the brachial plexus, usually from the plexus root (anterior/ventral ramus) of the cervical nerve C5. Once the nerve leaves C5 it commonly pierces the middle scalene muscle. It continues deep to levator scapulae muscle and the rhomboids (minor superior to major).

Why is it called Infraspinatus?

Infraspinatus is a thick triangular muscle that occupies the majority of the dorsal surface of the scapula. It arises mostly from the infraspinous fossa of scapula, and connects it to the proximal humerus. … Infraspinatus muscle.

Origin Infraspinous fossa of scapula
Blood supply Suprascapular artery, circumflex scapular arteries

What is the brachial artery?

The brachial artery is the extension of the axillary artery starting at the lower margin of the teres major muscle and is the major artery of the upper extremity. The brachial artery courses along the ventral surface of the arm and gives rise to multiple smaller branching arteries before reaching the cubital fossa.

What artery supplies the teres major?

Teres Major

Origin Dorsal surface of inferior angle of scapula
Insertion Medial lip of intertubercular groove of humerus
Action Adducts and medially rotates arm
Innervation Lower subscapular nerve (C6 and C7) (C6, C7)
Arterial Supply Subscapular and circumflex scapular arteries

How many rotator cuffs are in the shoulder?

All four rotator cuff muscles work together to centralize your humerus bone in the shoulder joint.

What are the 4 rotator cuff muscles?

The rotator cuff includes the following muscles[1][2][3]:

What are the 5 rotator cuff muscles?

Your rotator cuff is made up of muscles and tendons that keep the ball (head) of your upper-arm bone (humerus) in your shoulder socket. … What Is It?

Is dorsal scapular nerve part of brachial plexus?

The dorsal scapular nerve is a branch from the C5 root of the brachial plexus and supplies the rhomboid muscles.

What nerves are under the shoulder blade?

Nerves of the Shoulder

What nerve causes scapular pain?

In our study, C7 radiculopathy resulted in interscapular pain, and C8 radiculopathy resulted in interscapular and scapular pain. In almost all cases of C7 radiculopathy, the medial branches from the dorsal rami ended within the rhomboideus muscle, indicating that C7 radiculopathy causes interscapular pain.

Is superficial cervical artery same as transverse cervical artery?

A superficial branch, which is the superficial cervical artery, travels upward after it branches from the transverse cervical artery. A deep branch, which is the dorsal scapular artery, travels downward after it branches from the transverse cervical artery.

What is rhomboid major?

The rhomboid major is a skeletal muscle on the back that connects the scapula with the vertebrae of the spinal column. In human anatomy, it acts together with the rhomboid minor to keep the scapula pressed against thoracic wall and to retract the scapula toward the vertebral column.

What does the Suprascapular artery supply?

The suprascapular artery supplies the supra- and infraspinatus muscles and travels with the suprascapular nerve. It is a direct branch from the subclavian artery (12%), the thyrocervical trunk (27%) or the internal thoracic artery (11%).