11 results
Upper Extremity Nerve Pathologies 

 • Axillary Nerves
 • Musculocutaneous Nerve
 • Radial Nerve
 • Median
Upper Extremity ... • Ulnar Nerve ... sarahthelyon #Upper #Extremity ... #differential # ... #innervation #neurology
Lower Extremity Nerve Pathologies 

 • Obturator
 • Femoral
 • Common Peroneal
 • Tibial
 • Superior
Lower Extremity ... Nerve Pathologies ... #differential # ... Neuropathy #anatomy #leg ... #innervation #neurology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Abduction - C8-T1 (ulnar ... Adduction - C7-T1 (ulnar ... #UpperLimb #Extremity ... Myotomes #diagnosis #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... and bilateral leg ... damage to peroneal nerve ... Myotomes #diagnosis #neurology ... sensory #motor #leg
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Ill (Oculomotor) Nerve ... (Trochlear) Nerve ... (Abducens) Nerve ... #Localization #ophthalmology ... #neurology #differential
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... • CN VI palsy ... • Neurologic ... #DoubleVision #Differential ... Algorithm #Causes #Ophthalmology
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Cord Injury by Nerve ... Biceps Reflex C6 ... Flexion None T1 Ulnar ... NerveRoots #Levels #differential ... #diagnosis #Neurology
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Ptosis - Differential ... CN III palsy 2. ... eyelid: • Third nerve ... #Differential # ... Diagnosis #ophthalmology
Photophobia and Headache - Differential Diagnosis Framework

Why?
• The coexistence of photophobia and headache suggests the potential
and Headache - Differential ... Trochlear headache • CNS ... the trigeminal nerve ... #diagnosis #ophthalmology ... #Neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... arthralgia, arm/leg ... affects the skin, neurologic ... muscle weakness • Nerves ... purpura (lower legs