8 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Conditions: • Cauda ... Equina Syndrome ... saddle (perineal) anesthesia ... Commonly caused ... #Myotomes #diagnosis
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 ... • S - Saddle anesthesia ... : • Spinal cord ... region (S2-S4 dermatomes ... #causes #neurology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
- Spinal Cord Syndromes ... involvement Cauda ... multiradicular pain - Leg ... #differential #diagnosis ... #neurology
Incomplete spinal cord syndromes (ISCS)
 • Central - Small Lesion - Suspended sensory deficit, classic cape
syndromes (ISCS ... dysfunction, saddle anesthesia ... LMN types) • Cauda ... multiradicular pain, leg ... #diagnosis #neurology
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
- Differential Diagnosis ... of injury • Gait ... Lower roots -> Cauda ... Causes: 1. ... MCTD, Sjogren syndrome
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
- Ensure leg ... • Syndrome caused ... • Diagnosis: ... loss of spinal cord ... level of spinal cord
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Epidemiology: • 1-2 cases ... Weakness: Starts in legs ... Reflexes: Arms or legs ... nerve roots and cauda ... #diagnosis #management
Stiff Person Syndrome (SPS) - Diagnosis and Management Summary

Epidemiology:
 • Prevalence: 1-2 cases per million -
and Management ... Prevalence: 1-2 cases ... brain and spinal cord ... • Wide based gait ... #neurology