68 results
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
Presentations • Wrist ... Hand - Ulnar Nerve ... InjuryHand ... Differential #Diagnosis #MSK ... #Orthopedics
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
Wrist Extension ... T1 Ulnar Nerve ... Tibial Nerve Knee ... #MuscleGroups #MSK ... #Orthopedics #Neurology
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
no longer sitting ... fracture, median nerve ... injury • ED ... #Radiology #XRay ... #Sports #MSK
Froment's Sign - Ulnar Nerve Injury

Patients with compromise of the ulnar nerve will not be able
Nerve Injury ... third fingers, ... #Nerve #Injury ... #Hand #PhysicalExam ... #sports #msk #orthopedics
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
with radial head dislocation ... posterior interosseous nerve ... syndrome, ligamentous injury ... #Radiology #XRay ... #Proximal #MSK
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
onto outstretched hand ... variable gross wrist ... fracture, median nerve ... Distal #Radiology #XRay ... #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
dorsum of the hand ... , pain with wrist ... injuries: Perilunate dislocation ... Carpal #Radiology #XRay ... #Sports #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
• Due to injury ... onto outstretched hand ... box, pain with wrist ... Carpal #Radiology #XRay ... #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
, C8 (radial) Finger ... aracteristic "claw hand ... spared in this injury ... Anterior Shoulder Dislocation ... sensory #motor #arm #physicalexam
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
ulnar displacernent ... Hyperextension injury ... IPJoint #Radiology #XRay ... Diagnosis #Management #Hand ... #Orthopedics #MSK