UE Muscle Origin/Insertion
This muscle attaches to the intertubercular groove and performs adduction, IR, and extension.
Latissimus dorsi
This nerve innervates the infraspinatus.
Suprascapular nerve
Which ability allows identifying objects by touch without vision?
Stereognosis
This pathology results from thickening of the palmar fascia.
Dupuytren’s contracture
This test reproduces symptoms of DeQuervain’s by ulnar deviation with thumb enclosed in the fist.
Finkelstein’s test
Which muscle inserts on middle phalanges 2–5 via its split tendons?
Flexor digitorum superficialis
Which nerve innervates pronator teres?
Median nerve
Which rotator cuff muscle performs shoulder abduction for the first 15 degrees?
Supraspinatus
Pain during gardening tasks in a patient with lateral epicondylitis is caused by overuse of this muscle group.
Wrist extensors (especially ECRB)
This test resists wrist extension to diagnose lateral epicondylitis.
Cozen’s test
Which wrist extensor inserts on metacarpal 5?
Extensor carpi ulnaris (ECU)
Both the median and ulnar nerves innervate which finger-flexing muscle?
Flexor digitorum profundus; IF/LF - median; RF/SF - ulnar
Which muscle flexes the IP joint of the thumb?
Flexor pollicis longus
Which structure limits valgus stress at the elbow?
Ulnar collateral ligament
A positive Froment’s sign indicates weakness of adductor pollicis and compensation using…
Flexor pollicis longus (FPL)
What is the origin of opponens pollicis?
Trapezium and flexor retinaculum
Which nerve innervates the adductor pollicis?
Ulnar nerve
These intrinsic hand muscles flex MCPs 2–5 while extending IPs.
Lumbricals
Inflammation of the A1 pulley results in this condition.
Trigger finger
What test provokes symptoms of cubital tunnel syndrome?
Elbow Flexion Test ; Tinel's at Cubital Tunnel
What is the insertion of abductor pollicis brevis?
Proximal phalanx of the thumb (lateral side)
Which nerve innervates the muscle that extends the index finger independently (extensor indicis)?
Radial nerve (PIN)
Which muscles perform metacarpal adduction?
Palmar interossei
Which nerve injury results in scapular winging?
Long thoracic nerve
What test places the flexor tendon wad in a lengthened position (elbow extended, FA supinated and wrist in extension) to provoke pain at the medial epicondyle?
Reverse Mill's Test