12 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Extension C6, C7, C8 (radial ... Extension - C7, C8 (radial ... Extension - C7, C8 (radial ... damage to the radial ... nerve in the radial
Causes of Peripheral Weakness with Sensory Changes - Differential Diagnosis Algorithm
Radiculopathy:
 • Disc
 • Spondylosis
 •
of Peripheral Weakness ... Sensory Changes - Differential ... • Peroneal • Radial ... #Sensory #Neurology ... #Differential #
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
Spinal Cord Injury ... Respiration None C5 Radial ... None T7-T12 See Dermatomes ... NerveRoots #Levels #differential ... #diagnosis #Neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... claudication and weakness ... stopping walking (vascular ... Myotomes #diagnosis #neurology ... sensory #motor #leg #physicalexam
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Neuromuscular Weakness ... Myelitis, Trauma, Tumor ... Phrenic nerve injury ... #Causes #differential ... #diagnosis #neurology
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
Cord Disorders - Differential ... below the site of injury ... Vascular/Blockage ... disorders #diagnosis #neurology ... #differential
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
result in permanent neurologic ... - Abscess - Tumor ... - Lower motor ... syndromes #lesions #differential ... #diagnosis #neurology
Bell's Palsy - Diagnosis and Management Summary - GrepMed Handbook

Acute Idiopathic Unilateral Facial Nerve (CN7) Palsy
Presentation:
Unilateral upper AND lower ... facial weakness ... HIV, Lyme, GBS, tumor ... prevent corneal injury ... Management #Treatment #Neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
lumbar stenosis • Vascular ... extremity weakness ... region (S2-S4 dermatomes ... MRI- Sagittal, axial ... diagnosis #causes #neurology
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
legs over medial ... Herpes zoster - Dermatomal ... site of previous injury ... ) - Firm tumor, ... dermatology #rash #differential