27 results
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
"pooping duck sign ... "pooping duck sign ... ulna, pain with wrist ... Triquetrum #Fracture #Wrist ... Orthopedics #Sports #MSK
Mytomes - Segmental Innervation of Muscles
Shoulder	Abduction	C5	Axillary Nerve
Shoulder	Adduction	C6-C8	Thoracodorsal Nerve
Elbow	Flexion	C5	Musculocutaneous Nerve
Elbow	Extension	C7	Radial Nerve
Wrist	Extension	C6	Radial Nerve
Fingers	Flexion	C8	Median Nerve
Fingers	Abduction	T1	Ulnar Nerve
Hip	Flexion	L2	Nerve to Psoas
Hip	Extension	S1	Inferior Gluteal
Elbow Flexion ... Elbow Extension ... C7 Radial Nerve ... Wrist Extension ... #MuscleGroups #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
associated injuries: Carpal ... fracture, median nerve ... #Carpal #Radiology ... #XRay #Diagnosis ... Orthopedics #Sports #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
"Terry Thomas" sign ... ("Terry Thomas sign ... box, pain with wrist ... #Radiology #XRay ... Orthopedics #Sports #MSK
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
anterior sail sign ... anterior interosseous nerve ... can't make A-OK sign ... Humerus #Radiology #XRay ... #Orthopedics #MSK
Scaphoid Fractures
The scaphoid is the most commonly fractured carpal bone. Remember, if a fracture is suspected
commonly fractured carpal ... not seen on x-ray ... Scaphoid #Fracture #Wrist ... #XRay #Diagnosis ... Orthopedics #Sports #MSK
RADIAL HEAD FRACTURE 
Radial head fractures are the most common elbow fracture in adults and are
the most common elbow ... x-ray review alignment ... anterior sail sign ... #Radiology #XRay ... #Orthopedics #MSK
Ulnar Fovea Sign Test for Fovea Disruption

Useful for patients with pain along the ulnar aspect of
Ulnar Fovea Sign ... examiner with the elbow ... The elbow is in ... #Ulnar #Fovea #Sign ... #orthopedics #msk
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
- C6, C7, C8 Elbow ... Pronation - C7, C8 Wrist ... Horner Syndrome Wrist ... to the radial nerve ... Carpal Tunnel Syndrome
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
Posterior Elbow ... anterior interosseous nerve ... can't make A-OK sign ... Posterior #Radiology #XRay ... Orthopedics #Sports #MSK