Bones & Joints
This specific fibrous syndesmosis holds the distal radius and ulna together, preventing separation during heavy load loading.
What is the Interosseous Membrane?
This deep axial muscle originates on the transverse processes of lower vertebrae and spans 2-4 segments to insert on spinous processes above.
What is the Multifidus?
This artery runs over a notch to supply blood to the supraspinatus and, eventually, the infraspinatus.
What is the suprascapular artery?
This combined multi-planar movement occurs at the 1st CMC joint, allowing the pad of the thumb to touch the other digits.
What is Opposition?
Repetitive typing at a new job can compress this nerve in the wrist, causing numbness in the thumb, index, and middle fingers."
What is the median nerve?
This ring-like fibrocartilage deepens the shoulder joint and creates a negative pressure seal improving stability.
What is the glenoid labrum?
This intrinsic hand muscle passes through the two slips of the Flexor Digitorum Superficialis tendon to insert on the distal phalanx.
What is the Flexor Digitorum Profundus (FDP)?
This nerve innervates the ECRB and Supinator muscles, after which it changes its name to the posterior interosseous nerve.
What is the Deep Branch of the Radial Nerve?
During shoulder abduction above 90 degrees, this specific motion of the scapula is required to clear the greater tubercle under the acromion and prevent RTC impingement.
What is Upward Rotation?
These ligaments connect the C2 vertebra to the skull and limit head rotation.
What are the alar ligaments?
This ligament prevents anterior displacement of C1 on C2 and is susceptible to destruction in severe rheumatoid arthritis.
What is the Transverse Ligament?
This dynamic stabilizer is the only rotator cuff muscle that inserts into the lesser tubercle of the humerus.
What is the Subscapularis?
Running down the medial side of the forearm, this brachial artery branch forms an anastomosis around the elbow and travels alongside a similarly named nerve.
What is the ulnar artery?
Although not located in the shoulder, based on it's fiber orientation and insertion site, this muscle produces GHJ extension, adduction, and IR.
What is the latissimus dorsi?
A patient can only perform shoulder abduction if the therapist helps them start the movement. Injury to which muscle should be suspected?
What is the supraspinatus?
These two carpal bones articulate directly with the distal radius to form the radiocarpal joint.
What are the scaphoid and lunate?
This intrinsic hand muscle flexes the metacarpophalangeal (MCP) joint while extending the interphalangeal (IP) joints.
What are the Lumbricals?
This nerve originates directly from C5-C7 ventral rami without passing through the brachial plexus trunks or cords.
What is the Long Thoracic Nerve?
This muscle, based on muscle volume, is the most powerful elbow flexor.
What is the brachialis?
A patient who loses the ability to flex their elbow and supinate their forearm, but can still extend their wrist, likely has an injury to this specific cord of the brachial plexus.
What is the lateral cord?
This specific intrinsic spinal ligament runs along the anterior surface of the vertebral bodies, specifically limiting hyperextension of the spine.
What is the Anterior Longitudinal Ligament (ALL)?
This deep flexor compartment muscle of the forearm flexes the distal phalanx of the thumb and is innervated by the AIN.
What is the Flexor Pollicis Longus (FPL)?
The intrinsic palmar interossei and dorsal interossei muscles of the hand receive motor innervation from this specific nerve branch.
What is the Deep Branch of the Ulnar Nerve?
Which muscle fibers of the trapezius work with the serratus anterior to produce upward rotation of the scapula?
What are the upper and lower trapezius muscle fibers.
"A sudden traction injury from a door blowing open causes atrophy in a patient's hypothenar eminence, signaling damage to this specific cord of the brachial plexus."
What is the medial cord?