What is Infraspinous fossa of scapula?
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.
Where is the Subscapular fossa located?
The subscapular fossa is a landmark of the scapula. 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: 1.
What is Infraspinous?
Medical Definition of infraspinous : lying below a spine especially : lying below the spine of the scapula.
What is the function of a Infraspinous fossa?
… 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 muscle fits in the Infraspinous fossa?
The infraspinatus has actions on the head of the humerus. The infraspinatus’ insertion at the middle facet of the glenoid tubercle allows it to exert a lateral or external rotational force. This force is synergistic with the teres minor, as it inserts on the inferior facet of the glenoid tubercle.
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?
Action. Teres Minor, along with Infraspinatus, primarily produces external rotation of the shoulder joint. It assists in adduction and extension of the shoulder. When the humerus is stabilized, abducts the inferior angle of the scapula.
Why is it called teres minor?
Anatomical terms of muscle The teres minor (Latin teres meaning ’rounded’) is a narrow, elongated muscle of the rotator cuff.
Why do Teres minors hurt?
The rotator cuff muscle tendons, including the teres minor tendon, can be inflamed or irritated in a process called tendinitis. In general, tendinitis is usually an exertional injury caused by repetitive use; rotator cuff tendinitis is caused by repetitive use of the arm, often in overhead activities.
What bones does the teres minor attach to?
Origin and insertion Teres minor inserts onto the greater tubercle of humerus. Specifically, the superior fibers of the muscle give off a short tendon that inserts to the inferior facet of the greater tubercle of humerus.
Why does my teres major muscle hurt?
Teres Major Syndrome, a myofascial pain syndrome affecting the teres major muscle, has been observed in patients. This can occur as a result of stretch or impact injuries from playing sports, vehicle accidents, or falls onto the lateral scapula.
Can you feel your teres major?
To find teres major, reach across and grab the flesh that forms the back of your armpit, with your thumb in your armpit and your fingertips on the outside edge of your shoulder blade. If you slide your thumb back and forth, you can feel the dense and slippery tendon of your latissimus dorsi (or lat) muscle.