8 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
nerve in the radial ... Saturday night palsy ... in the median nerve ... Anterior Shoulder Dislocation ... cause axillary nerve
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
• CN VI palsy ... Cataract/Lens Dislocation ... Nerve VI problem ... Nerve Ill - Eye ... Nerve IV - Eye
Ramsay Hunt Syndrome (Herpes zoster oticus) wit Facial Nerve Palsy
Triad: 
 - Ipsilateral facial paralysis
 -
Ramsay Hunt Syndrome ... oticus) wit Facial Nerve ... Palsy Triad: ... vesicles in auditory canal ... oticus #Facial #Nerve
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
anterior interosseous nerve ... + radial head fracture ... fracture • ED Management ... #Posterior #Radiology ... XRay #Diagnosis #Management
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
head dislocation ... head dislocation ... posterior interosseous nerve ... ), compartment syndrome ... Forearm #Ulnar #Radiology
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
, triquetrum), radial ... fracture, median nerve ... injury • ED Management ... Wrist #Carpal #Radiology ... XRay #Diagnosis #Management
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
fracture, median nerve ... carpal tunnel syndrome ... injury) • ED Management ... Colles #Distal #Radiology ... XRay #Diagnosis #Management
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
capitellum (age 1), radial ... anterior interosseous nerve ... ), compartment syndrome ... • ED Management ... Elbow #Humerus #Radiology