26 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Pronation - C7, C8 Wrist ... , T1 (median) Reflexes ... nerve in the radial ... Saturday night palsy ... Myotomes #diagnosis #neurology
Bell's palsy
There are many different causes of Facial Nerve Palsy. However, the commonest
cause of unilateral facial
many different causes ... of Facial Nerve ... the commonest cause ... Loss of Corneal Reflex ... #Neurology #Signs
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
palsyMedial ... One-and-a-half Syndrome ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... - Radial Nerve Palsy ... sleeping as in this case ... Nerve #Palsy #PhysicalExam ... #msk #sports #neurology
Causes of Facial Weakness - Differential Diagnosis Algorithm
Forehead Sparing = Central cause
  - Most commonly
Causes of Facial ... Weakness - Differential ... nerve palsy) ... Unilateral: Bell's Palsy ... #neurology #sparing
Synkinetic Wrist Extension Maneuver demonstrating Radial Nerve Palsy as cause for Wrist Drop

Up up, down down.
Nerve Palsy as ... cause for Wrist ... nerve palsy with ... nerve palsy. ... #Nerve #Palsy #
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 ... Respiration None C5 Radial ... C6 Dorsal Thumb Wrist ... NerveRoots #Levels #differential ... #diagnosis #Neurology
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... • CN VI palsy ... ptosis with CN Ill palsy ... • Neurologic ... #Ophthalmology
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
Dilated Pupil - Differential ... Oculomotor (3rd cranial ... nerve) Palsy: ... no neurological cause ... #diagnosis #neurology
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
- Differential ... Sub-Cortical (Corona radiata ... Nerve Palsies ... Brown-Sequard Syndrome ... #Hemiplegia #Neurology