7 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Conditions: • Cauda Equina ... Syndrome - Low back pain ... , sciatica, saddle ... Commonly caused ... #neurology #sensory
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... Causes: • Large ... etc) in lumbar spine ... Incontinence • Saddle ... pathophysiology #diagnosis
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
sequestration • Saddle ... Mnemonic: • S - Saddle ... - Emergency Causes ... Differential Diagnosis ... #causes #neurology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
Causes of spinal ... involvement Cauda Equina ... - Leg weakness ... #differential #diagnosis ... #neurology
Incomplete spinal cord syndromes (ISCS)
 • Central - Small Lesion - Suspended sensory deficit, classic cape
Incomplete spinal ... rectal dysfunction, saddle ... types) • Cauda Equina ... , leg weakness ( ... #neurology
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Reflexes: Arms or legs ... Hands or feet • Pain ... of intrathecal spinal ... roots and cauda equina ... management #treatment #neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
arthralgia, arm/leg ... affects the skin, neurologic ... rhinitis/sinusitis, saddle ... tract, and often causes ... purpura (lower legs