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 ... Equina Syndrome ... equina syndrome ... of Cauda Equina ... #causes #neurology
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... Causes: • Large ... Incontinence • Saddle Anesthesia ... #CaudaEquina #Syndrome ... pathophysiology #diagnosis
Incomplete spinal cord syndromes (ISCS)
 • Central - Small Lesion - Suspended sensory deficit, classic cape
dysfunction, saddle anesthesia ... LMN types) • Cauda ... Equina - Asymmetric ... multiradicular pain, leg ... #diagnosis #neurology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
involvement Cauda ... Equina Syndrome ... multiradicular pain - Leg ... #differential #diagnosis ... #neurology
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Epidemiology: • 1-2 cases ... Reflexes: Arms or legs ... nerve roots and cauda ... equina • GQ1b ... #diagnosis #management
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
of injury • Gait ... Lower roots -> Cauda ... equina- decreased ... Non-compressive Spinal Cord Causes ... MCTD, Sjogren syndrome
Guillain-Barré Syndrome (GBS)
Acute autoimmune demyelinating polyradiculoneuropathy that presents with rapidly progressive flaccid weakness
Epidemiology:
 • Incidence: 1
Guillain-Barré Syndrome ... nerve roots and cauda ... equina TREATMENT ... #diagnosis #management ... #neurology