9 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... hand" ± Horner Syndrome ... nerve in the radial ... Carpal Tunnel Syndrome ... #UpperLimb #Extremity
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
fracture, median nerve ... injury, acute carpal ... tunnel syndrome ... Distal #Radiology #XRay ... #Diagnosis #Management
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
Differential Diagnosis Algorithm ... Consciousness • Cranial ... Nerve Palsies ... contralateral extremity ... Brown-Sequard Syndrome
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... • Cauda Equina Syndrome ... damage to peroneal nerve ... Narrowing of spinal canal ... #LowerLimb #Extremity
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 ... #Radiology #XRay ... #Diagnosis #Management
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
Neuronitis • Herpes ... • Semicircular canal ... dehiscence syndrome ... • Cogan's syndrome ... Differential #Diagnosis #algorithm
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
ulnar shaft with radial ... posterior interosseous nerve ... ), compartment syndrome ... Ulnar #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 ... Humerus #Radiology #XRay
Ear Pain / Otalgia - Differential Diagnosis Algorithm
Referred Otaliga:
 • Via Vagus or Glossopharyngeal Nerves
 •
Differential Diagnosis Algorithm ... Glossopharyngeal Nerves ... External Auditory Canal ... Zoster (Ramsay Hunt Syndrome ... if Facial Nerve