"the dance" and cuff
Doing "Chicken Wings" (shoulder abduction) tests this spinal cord Myotome level.
What is C5?
Hitting your "funny bone" actually compresses this nerve in the Cubital Tunnel.
What is the Ulnar Nerve?
You can palpate the pulse of this artery in the floor of the Anatomical Snuffbox.
What is the Radial Artery?
This "roof" of the shoulder impingement zone is made of the Acromion and the Coracoacromial ligament.
What is the Coracoacromial Arch?
A patient presenting with loss of thumb opposition. What nerve is damaged?
What is the Median Nerve?
This Rotator Cuff muscle is responsible for the first 0-15 degrees of abduction.
What is the Supraspinatus?
This nerve pierces the Coracobrachialis muscle and can sometimes get entrapped there.
What is the Musculocutaneous Nerve?
This muscle is the landmark that divides the Axillary Artery into three parts.
What is the Pectoralis Minor?
The Axillary Nerve and Posterior Humeral Circumflex artery travel through this geometric space.
What is the Quadrangular Space?
A "Bankart Lesion" involves the tearing of the Inferior Glenohumeral Ligament and this fibrocartilage ring.
What is the Labrum?
If you burn the tip of your middle finger, the pain travels via this Dermatome level.
What is C7?
"Wrist Drop" is the classic sign of injury to this nerve, often in the spiral groove.
What is the Radial Nerve?
This is the largest branch of the Axillary Artery; it splits into the Thoracodorsal and Circumflex Scapular arteries.
What is the Subscapular Artery?
This ligament acts like a "hammock" and is the primary stabilizer against anterior dislocation when the arm is abducted and externally rotated
What is the Inferior Glenohumeral Ligament (IGHL)?
This syndrome involves compression of the Suprascapular tendon or bursa in the Subacromial space.
What is Impingement Syndrome?
This is the only Rotator Cuff muscle that performs Internal Rotation.
What is the Subscapularis?
This nerve innervates the "LOAF" muscles of the hand (Lumbricals 1-2, Opponens, Abd Pollicis Brevis, Flex Pollicis Brevis).
What is the Median Nerve?
"Cadavers Are Dead People" helps you remember branches; the "D" in "Dead" stands for this branch of the Thoracoacromial Trunk.
What is the Deltoid Branch?
The Radial Nerve passes through this triangular interval to reach the posterior arm.
What is the Triceps Hiatus?
Hyperextension of MCP and flexion of IP in the 4th and 5th digits indicates damage to this nerve.
What is the Ulnar Nerve?
While the other posterior cuff muscles use the Suprascapular nerve, the Teres Minor is innervated by this nerve.
What is the Axillary Nerve?
A fracture at the Surgical Neck of the humerus puts this nerve at significant risk.
What is the Axillary Nerve?
If the Axillary artery is blocked, blood bypasses the shoulder via the Scapular Anastomosis, connecting the Suprascapular artery with this artery. It also runs through the triangular space.
What is the Circumflex Scapular Artery?
This structure deepens the glenoid socket by 50% to increase stability without sacrificing mobility.
What is the Glenoid Labrum?
To distinguish a Radial nerve injury at the Arcade of Frohse vs. the Spiral Groove, you check sensation; if sensation is INTACT, the injury is at this location.
What is the Arcade of Frohse? (The injury here only affects motor/deep branch; sensory is spared because the superficial branch splits off earlier).