15 results
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
Perilunate Dislocation ... with the distal radius ... In perilunate dislocation ... with the distal radius ... , triquetrum), radial
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
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Distal Radius Fracture ... Distal radius ... #Radial #Colles ... Distal #Radiology #XRay ... #Orthopedics #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
Scapholunate Dissociation ... diagnosis scapholunate dissociation ... injuries: distal radius ... or lunate dislocation ... or dislocation)
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
Posterior Elbow Dislocation ... common major joint dislocation ... epicondyle > radial ... triad = posterior dislocation ... + radial head fracture
RADIAL HEAD FRACTURE 
Radial head fractures are the most common elbow fracture in adults and are
RADIAL HEAD FRACTURE ... Radial head fractures ... non-displaced radial ... injury, elbow dislocation ... #RadialHead #Radius
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
Interphalangeal Joint Dislocation ... involved and the dislocation ... ligaments (prevent radial ... (if dorsal PIP dislocation ... (if volar PIP dislocation
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
" on lateral x-ray ... injuries: Perilunate dislocation ... , distal radius ... Carpal #Radiology #XRay ... Orthopedics #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Extension C6, C7, C8 (radial ... Extension - C7, C8 (radial ... damage to the radial ... nerve in the radial ... Anterior Shoulder Dislocation
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
ulnar shaft with radial ... head dislocation ... and missing the radial ... head dislocation ... Ulnar #Radiology #XRay
Pediatric Elbow Injuries - Elbow Xrays

Check the fat pads on the lateral projection:
1. A displaced anterior
capitellum: a radial ... head dislocation ... The normal radius ... 2-3 cm of the radius ... the shaft of the radius