6 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Triceps power is ... spared in this injury ... night palsy" is a common ... Myotomes #diagnosis #neurology ... sensory #motor #arm
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
injuries: Fractures (medial ... anterior interosseous nerve ... can't make A-OK sign ... Posterior long arm ... Orthopedics #Sports #MSK
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
Findings Compression/injury ... rarely follow dermatomal ... must be absent: lower ... MeralgiaParesthetica #MSK ... differential #diagnosis #signs
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
Common Dermatological ... legs over medial ... associated with signs ... Extensor surfaces of arms ... site of previous injury
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
Microglial cells are ... fasciculations Common ... failure Diagnosis - Medical ... activity between nerve ... Lateral #Sclerosis #neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... primary condition MEDIUM ... Nodosa: • PAN most commonly ... affects the skin, neurologic ... muscle weakness • Nerves