22 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Dermatomes and Myotomes ... Motor Function Shoulder ... regimental badge" anesthesia ... #diagnosis #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
saddle (perineal) anesthesia ... Commonly caused ... damage to peroneal nerve ... such as fibular fracture ... #diagnosis #neurology
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... Diagnosis Framework ... Leg Pain: • Fracture ... #diagnosis #lower ... #extremity #msk
Causes of Back Pain - Differential Diagnosis Algorithm
Always assess for red flags. If no red flags,
Causes of Back Pain ... - Differential ... Diagnosis Algorithm ... of neoplasm • Fracture ... #Diagnosis #Algorithm
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
compression of nerve ... • S - Saddle anesthesia ... Diagnosis: • ... region (S2-S4 dermatomes ... #diagnosis #causes
Unilateral Acute Vision Loss - Differential Diagnosis Algorithm
Painful - Cornea
 • Keratopathy
Painful - No Abnormalities of
Vision Loss - Differential ... Diagnosis Algorithm ... Demyelination • MS ... #Diagnosis #Algorithm ... #Causes #Ophthalmology
Vascular Joint Pain - Differential Diagnosis Algorithm 
 - Constant Pain (Ischemia)
 - Acute Onset
 -
Diagnosis Algorithm ... Vascular #JointPain #MSK ... #Differential # ... Diagnosis #Algorithm ... #Orthopedics #Causes
Chronic Joint Pain - Differential Diagnosis Algorithm 
Intra-Articular
 - Bone
     • Stress
Diagnosis Algorithm ... Intraarticular #MSK ... #Differential # ... Diagnosis #Algorithm ... #Orthopedics #Causes
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
- Differential ... Diagnosis Algorithm ... Consciousness • Cranial Nerve ... contralateral extremity ... #Diagnosis #Algorithm
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... Diagnosis Algorithm ... Orbital Floor Fracture ... #DoubleVision #Differential ... #Diagnosis #Algorithm