11 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... • Cauda Equina Syndrome ... - Low back pain ... Neuropathy - Foot drop ... damage to peroneal nerve
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Wrist drop - Occurs ... Triceps power is ... Carpal Tunnel Syndrome ... Myotomes #diagnosis #neurology ... sensory #motor #arm #physicalexam
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... Sciatica • Tarsal tunnel ... diagnosis #lower ... #extremity #msk ... #physicalexam
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
rarely follow dermatomal ... must be absent: lower ... Straight Leg Raise Test ... MeralgiaParesthetica #MSK ... pathophysiology #differential
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
compression of nerve ... region (S2-S4 dermatomes ... • Provocative Tests ... #differential # ... diagnosis #causes #neurology
Guillain–Barré syndrome (GBS)
(aka: Landry–Guillain–Barré–Strohl syndrome:
	Most common cause of acute flaccid paralysis
	Rapidly progressive ascending paralysis & areflexia
	Autonomic
Guillain–Barré syndrome ... moves rapidly from lower ... Differential diagnosis ... prominent cranial nerve ... Transverse myelitis: Pain
Ober's Test for TFL/ITB Inflammation

With the patient in the lateral position, affected side up.  The
hip, then slowly lowers ... the knee will drop ... Iliotibial #Band #Syndrome ... clinical #video #physicalexam ... #sports #msk #orthopedics
The Neurological Evaluation of a Comatose Patient

Definition:
 • Coma: a state of unresponsiveness; the absence of
consciousness Differential ... threat Cranial Nerves ... Possible responses to pain ... caseyalbin #PhysicalExam ... #neurology #comatose
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitides - Differential ... the upper and lower ... Coronary arteries - Fever ... , testes -> pain ... retinopathy Lab Tests
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... affects the skin, neurologic ... muscle weakness • Nerves ... the upper and lower ... Palpable purpura (lower