5 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... Dermatomes and Myotomes ... Syndrome - Low back pain ... saddle (perineal) anesthesia ... sensory #motor #leg #physicalexam
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
Loss of pain and ... hyperextension -> Upper extremity ... Primarily Upper Extremity ... Dysfunction (pain ... reflex. saddle anesthesia
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Dermatomes and Myotomes ... spared in this injury ... regimental badge" anesthesia ... sensory #motor #arm #physicalexam
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Repetitive strain injury ... Trauma • Crush injury ... cyanosis - Cool extremity ... diagnosis #lower #extremity ... #msk #physicalexam
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Severe low back pain ... • S - Saddle anesthesia ... • P - Pain ... - lower back pain ... region (S2-S4 dermatomes