9 results
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
Spinal Cord Injury ... None T7-T12 See Dermatomes ... Anterior Medial Thigh Hip ... #differential #diagnosis ... #Neurology #Spine
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... spared in this injury ... #Myotomes #diagnosis ... #neurology #sensory ... #motor #arm #physicalexam
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
- Spinal Cord Syndromes ... result in permanent neurologic ... syphilis, and HIV ... #differential #diagnosis ... #neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Reflexes: • Knee ... • Cauda Equina Syndrome ... Commonly caused ... #Myotomes #diagnosis ... #neurology #sensory
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... - Differential Diagnosis ... bearing after injury ... #Effusions #causes ... #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
 •
(CES) is usually ... : • Spinal cord ... infarct • HIV ... region (S2-S4 dermatomes ... #causes #neurology
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
- Differential Diagnosis ... below the site of injury ... Causes: 1. ... MCTD, Sjogren syndrome ... #neurology #differential
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
Orthopedic Emergencies ... • Syndrome caused ... tibia/fibula) and hip ... after an acute injury ... • Diagnosis:
Posterior Knee Dislocation Injury
Specifically, POSTERIOR KNEE DISLOCATIONS can have significant associated injury that needs unique approach
DISLOCATION: ~25% cases ... Neurologic deficit ... Neurologic injuries ... Check hip and ankle ... trauma/vascular/orthopedic