Bony Landmars
This structure on the scapula serves as the attachment site for the long head of the triceps brachii.
What is the infraglenoid tubercle?
The coracoclavicular ligament is composed of these two ligaments, which stabilize the acromioclavicular joint.
What are the conoid and trapezoid ligaments?
This elbow flexor is not affected by forearm pronation or supination because it inserts on the ulna.
What is the brachialis?
This nerve runs along the posterior aspect of the humerus in the spiral groove and can be injured in a midshaft humeral fracture.
What is the radial nerve?
This anatomical space is bordered by the teres minor, teres major, and the long head of the triceps, and transmits the axillary nerve.
What is the quadrangular (quadrilateral) space?
This sharp edge runs along the medial border of the radius.
What is the interosseous border (crest) of the radius?
This part of the glenohumeral joint capsule is the least reinforced and is the most common site of anterior shoulder dislocations.
What is the inferior capsule?
The primary muscle responsible for horizontal adduction of the arm.
What is the pectoralis major?
This nerve, which passes over the superior scapula, is responsible for innervating two of the four rotator cuff muscles.
What is the suprascapular nerve?
This small potential space, located between the coracoid process and the humeral head, becomes clinically relevant during anterior shoulder dislocation.
What is the sub-coracoid space?
This concave surface on the scapula houses the head of the humerus, forming the glenohumeral joint.
What is the glenoid fossa (cavity)?
The medial (ulnar) collateral ligament is composed of anterior, posterior, and ___________ bands, in order to stabilizes the medial side of the elbow.
What is the transverse band (fibers)?
This movement of the scapula occurs when raising the arm overhead, involving the trapezius and serratus anterior.
What is upward rotation?
This nerve innervates the pectoralis minor muscle.
What is the medial pectoral nerve?
This passageway, located inferior to the teres major and lateral to the long head of the triceps, allows the radial nerve to continue into the arm.
What is the triangular interval?
This process on the radius is the site of attachment for the biceps brachii tendon.
What is the radial tuberosity?
This ligament stabilizes the sternoclavicular joint by connecting the sternal ends of both clavicles.
What is the interclavicular ligament?
This muscle aids in ipsilateral neck rotation.
What is the levator scapulae?
The serratus anterior muscle is innervated by this nerve, which, when damaged, can result in a "winged scapula."
What is the long thoracic nerve?
This fascia encloses the subclavius and pectoralis minor and is pierced by the lateral pectoral nerve as it travels to the pectoralis major.
What is the clavipectoral fascia?
This roughened area on the inferior surface of the clavicle serves as the attachment for the coracoclavicular ligament.
What is the conoid tubercle?
The ratio of glenohumeral to scapulothoracic movement during full arm abduction.
What is 2:1?
This muscle originates from the SPs of T6-T12 and inserts to the spine of the scapula on its inferior side.
What are the lower trapezius fibers?
This nerve courses through the quadrangular space and is at risk in shoulder dislocations.
What is the axillary nerve?
This space, situated between the deltoid and pectoralis major, serves as a pathway for the cephalic vein and the deltopectoral lymph nodes.
What is the deltopectoral (or clavipectoral) triangle?