5 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... • Cauda Equina Syndrome ... saddle (perineal) anesthesia ... Myotomes #diagnosis #neurology ... #sensory #motor
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Carpal Tunnel Syndrome ... Anterior Shoulder Dislocation ... regimental badge" anesthesia ... Myotomes #diagnosis #neurology ... #sensory #motor
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
Sensory loss below ... Primarily Upper Extremity ... reflex. saddle anesthesia ... signs #symptoms #msk ... #orthopedics #neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
and/or genital sensory ... • S - Saddle anesthesia ... weakness and sensory ... #differential # ... diagnosis #causes #neurology
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... • Sciatica • Tarsal ... cyanosis - Cool extremity ... diagnosis #lower #extremity ... #msk #physicalexam