8 results
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
articulate with the distal ... extension • ... #Wrist #Carpal ... Radiology #XRay #Diagnosis ... #Sports #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
Thomas" sign to diagnosis ... box, pain with wrist ... extension • Possible ... associated injuries: distal ... #Sports #MSK
Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive
The proximal carpal ... extensors (ECU, ... ECRB) The distal ... with an audible “clunk ... #msk #orthopedics
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Pronation - C7, C8 Wrist ... Horner Syndrome Wrist ... Carpal Tunnel Syndrome ... Anterior Shoulder Dislocation ... Dermatomes #Myotomes #diagnosis
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
pain with wrist ... flexion and extension ... injuries: Perilunate dislocation ... #XRay #Diagnosis ... #Sports #MSK
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
block and reduction ... Discharge with orthopedic ... Radiology #XRay #Diagnosis ... Management #Hand #Orthopedics ... #MSK
Scaphoid Fractures
The scaphoid is the most commonly fractured carpal bone. Remember, if a fracture is suspected
scaphoid entering distally ... , perilunate dislocation ... Scaphoid #Fracture #Wrist ... #XRay #Diagnosis ... #Sports #MSK
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
variable gross wrist ... injury, acute carpal ... procedural sedation and reduction ... Radiology #XRay #Diagnosis ... #MSK