12 results
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 ... Diagnosis: • ... • HIV related ... #differential # ... diagnosis #causes
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Anterior Medial Thigh Hip ... Femoral Condyle Knee ... Ankle Dorsiflexion Knee ... NerveRoots #Levels #differential ... #diagnosis #Neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
and Myotomes Reflexes ... : • Knee - L2 ... Conditions: • Cauda ... Equina Syndrome ... Dermatomes #Myotomes #diagnosis
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
Syndromes Spinal ... syphilis, and HIV ... involvement Cauda ... #lesions #differential ... #diagnosis #neurology
VON-CHOP Mnemonic for Orthopedic Emergencies
V - Vascular compromise (eg ischemic leg)
O - Open fracture
N - Neurological
Neurological deficit (eg cauda ... - Compartment syndrome ... H - Hip dislocation ... #Emergencies #diagnosis ... #consult #differential
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Deformity / Limp - Differential ... Diagnosis Algorithm ... Legg-Calve-Perthes Disease Knee ... Patellofemoral Syndrome ... #Orthopedics #Causes
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
- Differential ... Diagnosis Framework ... Lower roots -> Cauda ... MCTD, Sjogren syndrome ... dysfunction • Abnormal reflexes
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential ... Diagnosis Framework ... Loss of signal pulses ... Seronegative Reactive Syndrome ... #diagnosis #msk
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
Orthopedic Emergencies ... tibia/fibula) and hip ... • Diagnosis: ... cord function and reflex ... bulbocarvenosus reflex
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Decreased / Absent Reflexes ... Guillain-Barre Diagnosis ... of intrathecal spinal ... nerve roots and cauda ... #diagnosis #management