9 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Conditions: • Cauda ... Equina Syndrome ... foot and lateral calf ... Commonly caused ... claudication and weakness
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Sensory Changes ... Neuropathy • Spinal ... Polymyositis • Duchenne ... Muscular Dystrophy ... #Neurology #Differential
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Cauda Equina Syndrome ... of Cauda Equina ... lower extremity weakness ... #differential # ... #neurology
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... Causes: • Large ... Neoplasm in lumbar spine ... etc) in lumbar spine ... Complications: • Weakness
Incomplete spinal cord syndromes (ISCS)
 • Central - Small Lesion - Suspended sensory deficit, classic cape
Incomplete spinal ... LMN types) • Cauda ... Equina - Asymmetric ... multiradicular pain, leg ... syndromes #diagnosis #neurology
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
- Differential ... Lower roots -> Cauda ... equina- decreased ... Cord Causes: 1 ... disorders #diagnosis #neurology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
Causes of spinal ... involvement Cauda ... Equina Syndrome ... multiradicular pain - Leg ... syndromes #lesions #differential
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
: Starts in legs ... of intrathecal spinal ... nerve roots and cauda ... equina • GQ1b ... management #treatment #neurology
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
rapid onset of weakness ... Weakness: - Weakness ... flexors of the legs ... diagnosis #management #neurology ... #differential