25 results
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
Presentations • Wrist ... Drop - Radial Nerve ... InjuryHand ... #Differential #Diagnosis ... #MSK #Orthopedics
Radial Nerve Anatomy and Function
The Radial nerve is the nerve of elbow, wrist and digital extension.
the nerve of elbow ... the back of the arm ... wrist and elbow ... drop: ECRB and ... #Anatomy #diagnosis
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
"Terry Thomas" sign ... • Due to injury ... onto outstretched hand ... #Radiology #XRay ... Orthopedics #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
- C6, C7, C8 Elbow ... drop - Occurs after ... spared in this injury ... Carpal Tunnel Syndrome ... sensory #motor #arm
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
onto outstretched hand ... fracture, median nerve ... injury • ED ... #Carpal #Radiology ... #XRay #Diagnosis
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
"pooping duck sign ... Complications are ... #Carpal #Radiology ... #XRay #Diagnosis ... Orthopedics #Sports #MSK
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
brachial artery injury ... Posterior long arm ... #Humerus #Radiology ... #XRay #Diagnosis ... #Orthopedics #MSK
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
anterior interosseous nerve ... can't make A-OK sign ... Posterior long arm ... #XRay #Diagnosis ... Orthopedics #Sports #MSK
OK Sign - Interosseous Nerve Injury

Patients with compromise of anterior interosseous nerve will not be able
Nerve Injury ... OK signs are seen ... #Injury #Finger ... #Hand #PhysicalExam ... #sports #msk #orthopedics
RADIAL HEAD FRACTURE 
Radial head fractures are the most common elbow fracture in adults and are
anterior sail sign ... onto outstretched hand ... #Radiology #XRay ... #Diagnosis #Management ... #Orthopedics #MSK