Supraspinous fossa of scapula

It is much smaller than the infraspinous fossa bearing the spinoglenoid fossa on its side. Spine of the scapula bony ridge that separates the supraspinous fossa from the infraspinous fossa.

The supraspinous fossa is smooth and concave and becomes broaderlarger moving towards the medialvertebral border.

Supraspinous fossa of scapula. The supraspinous fossa is separated from the infraspinous fossa by the spine of the scapula. The supraspinous fossa of the scapula is of functional importance because it is the origin for. The supraspinatus muscle one of the four rotator cuff muscles.

Supraspinatus is the most superior of the four rotator cuff muscles. It is a small triangular-shaped muscle located on the posterior aspect of the scapula. It originates from the medial aspect of the supraspinous fossa a concave depression located above the spine of the scapula.

The muscle fibers converge onto a tendon that runs inferior to the. What does Supraspinous fossa mean. Medical Definition of supraspinous fossa.

A smooth concavity above the spine on the dorsal surface of the scapula that gives origin to the supraspinatus muscle. What is the action of teres minor. Teres Minor along with Infraspinatus primarily produces external rotation of the shoulder joint.

It is the area above the spine of the scapula. It is concave smooth and broader at its vertebral than at its humeral end. 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. It originates from medial two-third of the supraspinous fossa of the scapula. It inserts in the upper impression on the greater tubercle of the humerus.

It is supplied by Suprascapular nerve C5 C6 Action. Along with other scapular muscles it steadies the head of humerus during arm movements. 1 Supraspinous Fossa.

The supraspinous fossa is the much smaller superiorly placed fossa located above the spine of the scapula. The supraspinous fossa is smooth and concave and becomes broaderlarger moving towards the medialvertebral border. Supraspinous Fossa - supraspinous means above supra- superior- above the spine spinous of the scapula.

Its smaller than the infraspinous fossa but its pretty deep. The supraspinatus muscle originates here. Infraspinous Fossa - large scooped out hollow beneath the spine of the scapula where the infraspinatus originates.

At the back of the scapula is the convex and uneven posterior surface which has a protruding ridge of bone spine of the scapula that unevenly separates it into two divisions. The superior supraspinous fossa and the much bigger inferior infraspinous fossa. 1 The spine or spinous process.

It is a triangular plate of bone with 3 borders and 2 surfaces. It divides the dorsal surface of scapula into Supraspinous and infraspinous fossae. Posterior border is called as the crest of spine.

This crest has upper and lower lips. Other articles where supraspinous fossa is discussed. Scapulainto two concave areas the supraspinous and infraspinous fossae.

The spine and fossae give attachment to muscles that act in rotating the arm. The spine ends in the acromion a process that articulates with the clavicle or collarbone in front and helps form the upper part of the shoulder socket. What is the bony ridge of the scapula called.

Spine A tubercle is a small rounded projection on a bone. Spine of the scapula bony ridge that separates the supraspinous fossa from the infraspinous fossa. The lateral end flattens out to become the Acromion flat lateral aspect of the spine of the scapula.

Supraspinous fossa a depression above the spine of the scapula. Temporal fossa an area on the side of the cranium bounded posteriorly and superiorly by the temporal lines anteriorly by the frontal and zygomatic bones and laterally by the zygomatic arch lodging the temporal muscle. Accordingly the fossa that lies superior to the spine of the scapula is the supraspinous fossa.

The scapula consists of two surfaces the costal surface and the posterior surface. The infraspinous fossa is significantly larger than the supraspinous fossa and comprises the majority of the posterior surface of the scapula. The infraspinatus muscle one of the rotator cuff muscles originates in the infraspinous fossa.

The dorsal surface of the scapula is arched from above downward. It is divided into two unequal parts by the spine of the scapula. The portion above is known as the supraspinous fossa while the part below is called the infraspinous fossa.

The two fossae are connected by the spinoglenoid notch which lies lateral to the root of the spine. Note the flat shape of the shoulder blade in some parts of the supraspinous and infraspinous fossas the thickness is less than 1 millimeter and looks semitranslucent when observed against the light. Anterior or costal surface of the scapula.

These images are at about the angle they are as you look at the side of a dog. We are looking at the lateral aspect of the left scapula in this first imageThe articular surface the glenoid cavity E is at the distal end of the bone and the supraspinous fossa C is cranial to the spinous process A or spine of the scapula. The distal end of the spinous process A of the dog has an.

Supraspinous fossa of scapula insertion. Greater tubercle of humerus innervation. This landmark of the scapula lies at the level of thoracic vertebra 3 spinous process.

It separates the supraspinous fossa from the infraspinous fossa. It serves as part of the origin of the deltoid muscle as well as the insertion of part of the trapezius muscle. The prominent spine of scapula divides the surface into a smaller supraspinous fossa and a larger infraspinous fossa.

The depth of the supraspinous fossa is filled by the supraspinatus muscle. Borders edit edit source Superior Border It is thin and shorter. It presents the suprascapular notch near the root of the coracoid process.

Supraspinous fossa of the scapula and overlying supraspinous fascia Insertion. Superior most aspect of the greater tubercle of the humerus Actions. Abducts the shoulder joint Nerve supply.

Suprascapular nerve Blood supply. Branches of the subclavian artery. You may also find scapula posterior view lateral angle acromion superior border supraspinous fossa a spine of scapula coronoid process glenoid cavity infraspinous fossa inferior angle as well.

Health care advices from Overseas Doctor.