The great scapular notch (or spinoglenoid notch) is a notch which serves to connect the supraspinous fossa and infraspinous fossa. It lies immediately medial to the attachment of the acromion to the lateral angle of the scapular spine.
Where is the spinoglenoid notch?
The spinoglenoid notch is located on the superior and posterior aspect of the scapula.
What forms the borders of the suprascapular foramen?
The suprascapular foramen is located at the superior border of the scapula at its junction with the coracoid process, caused by ossification of the superior transverse scapular ligament which bridges the borders of the suprascapular notch.
What does the Suprascapular notch do?
The supra scapular notch is situated in the lateral part of the superior border of the scapula, adjacent to the base of the coracoid process. The notch is converted into a foramen by the transverse scapular ligament and it serves as a passage for the suprascapular nerve.
Where is the triangular space located?
Anatomical terminology
The triangular space (also known as the medial triangular space, upper triangular space, medial axillary space or foramen omotricipitale) is one of the three spaces found at the axillary space. The other two spaces are the quadrangular space and the triangular interval.
Where is the glenoid fossa?
The glenoid fossa is the socket of the shoulder joint. This part of the shoulder is a ball and socket joint. The head of the Humerus fits into the Glenoid fossa, though it is a shallow socket.
What muscles does the suprascapular nerve innervate?
The suprascapular nerve branches provide efferent innervation to the supraspinatus and infraspinatus muscles as well as sensory innervation to the shoulder joint.
What is suprascapular nerve entrapment?
Suprascapular neuropathy, or suprascapular nerve entrapment, is a condition which is due to irritation and damage to the suprascapular nerve (SSN). This condition can result in pain, weakness, or both depending on the cause.
Is the suprascapular nerve a peripheral nerve?
The suprascapular nerve is a mixed motor and sensory peripheral nerve arising from the superior trunk of the brachial plexus. The nerve supplies motor innervation to shoulder muscles and sends sensory branches to multiple places in the shoulder region.
What is a Subscapular fossa?
Medical Definition of subscapular fossa
: the concave depression of the anterior surface of the scapula.
Where is the acromion process?
The acromion (plural: acromia), also known as the acromial process, is a small projection of the scapula that extends anteriorly from the spine of the scapula.
What is a shoulder notch?
The suprascapular notch (or scapular notch) is a notch in the superior border of the scapula, just medial to the base of the coracoid process. It forms the entrance site into the suprascapular canal.
What is a supra scapula?
1 : a cartilaginous or partly ossified plate attached to the superior end of the scapula in various amphibians and reptiles.
What three bones form the shoulder?
The shoulder is made up of three bones: the scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone). Two joints in the shoulder allow it to move: the acromioclavicular joint, where the highest point of the scapula (acromion) meets the clavicle, and the glenohumeral joint.
What are the symptoms of nerve damage in the shoulder?
Signs and symptoms
changes in feeling on the same side as the shoulder that hurts. muscle weakness in the arm, hand, or shoulder. neck pain, especially when turning the head from side to side. numbness and tingling in the fingers or hand.
How do you treat suprascapular nerve entrapment?
Non-operative management of suprascapular nerve palsy is the initial treatment. Patients should discontinue repetitive or aggravating overhead shoulder activity and begin a physical therapy program consisting of rotator cuff and deltoid stretching and strengthening with scapular stabilization exercises.
What happens if the suprascapular nerve is severed?
The result can be shoulder pain and loss of function. For athletes who depend on the muscles supplied by that nerve, such a problem can be very disabling. Overhead athletes with traumatic shoulder injuries, especially severe rotator cuff tears seem to be affected most often.
What is the purpose of glenoid fossa?
Strong glenohumeral ligaments and muscles prevents dislocation in most cases. By being so shallow the glenoid cavity allows the shoulder joint to have the greatest mobility of all joints in the body, allowing 120 degrees of unassisted flexion.
What does glenoid mean?
Medical Definition of glenoid
1 : having the form of a smooth shallow depression —used chiefly of skeletal articulatory sockets. 2 : of or relating to the glenoid cavity or glenoid fossa.
What type of shoulder dislocation is more common?
Anterior dislocation is the most common, accounting for up to 97% of all shoulder dislocations. Mechanism of injury is usually a blow to an abducted, externally rotated and extended extremity. It may also occur with posterior humerus force or fall on an outstretched arm.
What nerve runs through triangular space?
The axillary nerve and the posterior humeral circumflex artery pass through this space from anterior to posterior. The triangular space is an anatomic interval medial to the quadrangular space. Its borders are formed by the long head of the triceps laterally, the teres minor superiorly, and the teres major inferiorly.
How do you remember quadrangular space?
Triangular space, Quadrangular Space- Scapula
- Triangular Space – TS (aka– Medial or Upper Triangular space, Foramen omotricipitale),
- Quadrangular Space – QS (aka– Quadrilateral space of Velpeau, Foramen humerotricipitale),
- Triangular Interval – TI (aka– Lateral or Lower Triangular space, Triceps hiatus).