6 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... over dorsum of foot ... Commonly caused ... such as fibular fracture ... sensory #motor #leg #physicalexam
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... Leg Pain: • Fracture ... 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
 •
- Emergency Causes ... distinguishing feature ... • Provocative Tests ... absent anal wink test ... #diagnosis #causes
Freiberg Infraction - MSK Radiology
Imaging Findings:
 • Sclerosis of the 2nd MT head with flattening of
Freiberg Infraction - MSK ... Case description ... Controversy: Subchondral fracture ... Differential diagnosis ... Freiberg #Infraction #foot
Posterior Knee Dislocation Injury
Specifically, POSTERIOR KNEE DISLOCATIONS can have significant associated injury that needs unique approach
DISLOCATION: ~25% cases ... nerve injury (25%) TEST ... Dorsiflexion of foot ... Fractures-> Femur ... Posterior #Injury #msk
Intermetatarsal Bursitis - MSK Radiology
Imaging Findings:
 • T2-hyperintense fluid-like signal and T1-hypointense signal between the first
Intermetatarsal Bursitis - MSK ... Case description ... was for stress fracture ... Differential diagnosis ... Intermetatarsal #Bursitis #foot