66 results
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
capitate ("apple") should ... tea cup") which should ... no longer sitting ... onto outstretched hand ... #Carpal #Radiology
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
bones should be ... bones should be ... onto outstretched hand ... box, pain with wrist ... #Radiology #XRay
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
onto outstretched hand ... variable gross wrist ... injury, acute carpal ... reduction using finger ... Colles #Distal #Radiology
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
ulna, pain with wrist ... Discharge with orthopedic ... Triquetrum #Fracture #Wrist ... #Carpal #Radiology ... Diagnosis #Management #Orthopedics
Most Common Carpal Bone Fractures by Frequency
 • Scaphoid - 50-80%
 • Triquetral - 5-20%
 •
Most Common Carpal ... Pal @drdevrad #Carpal ... Bone #Fractures #wrist ... #frequency #radiology ... #msk #orthopedics
Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive
Instability (MCI) of the Wrist ... The proximal carpal ... slightly extended, and ... ECRB) The distal carpal ... #msk #orthopedics
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Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... , C8 (radial) Finger ... aracteristic "claw hand ... Carpal Tunnel Syndrome ... Anterior Shoulder
Scaphoid Fractures
The scaphoid is the most commonly fractured carpal bone. Remember, if a fracture is suspected
instability and ... onto outstretched hand ... follow-up with Orthopedics ... Scaphoid #Fracture #Wrist ... #Carpal #Radiology
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
Axillary Nerve Shoulder ... Radial Nerve Wrist ... Radial Nerve Fingers ... Median Nerve Fingers ... MuscleGroups #MSK #Orthopedics
Age of Ossification of Carpal Bones
Capitate - 1 Month
Hamate - 2 Months
Triquetral - 3 Years
Lunate -
Ossification of Carpal ... , for the LEFT hand ... for the RIGHT hand ... #Bones #wrist # ... radiology #mnemonic