166 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... Erb's Palsy is caused ... hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... Anterior Shoulder
Mytomes - Segmental Innervation of Muscles
Shoulder	Abduction	C5	Axillary Nerve
Shoulder	Adduction	C6-C8	Thoracodorsal Nerve
Elbow	Flexion	C5	Musculocutaneous Nerve
Elbow	Extension	C7	Radial Nerve
Wrist	Extension	C6	Radial Nerve
Fingers	Flexion	C8	Median Nerve
Fingers	Abduction	T1	Ulnar Nerve
Hip	Flexion	L2	Nerve to Psoas
Hip	Extension	S1	Inferior Gluteal
Innervation of Muscles Shoulder ... Axillary Nerve Shoulder ... Elbow Extension C7 Radial ... Fingers Flexion C8 Median ... #MuscleGroups #MSK
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
oticus (Ramsay Hunt syndrome ... canal dehiscence syndrome ... • Cogan's syndrome ... toxicity • Otitis media ... Amy Chung, MD, MSc
Hyperthermia Syndromes Comparison
Serotonin Syndrome - NMS - Malignant Hyperthermia - Malignant Catatonia
Cause - Onset - Vitals
Hyperthermia Syndromes ... Comparison Serotonin Syndrome ... Malignant Catatonia Cause ... Tone - Reflexes - Mental ... #Hyperthermia #Syndromes
Cubital Tunnel Syndrome: Pathogenesis and clinical findings

 • Paresthesia of 5th and medial half of 4th
Cubital Tunnel Syndrome ... Paresthesia of 5th and medial ... awakening • Medial ... CubitalTunnel #Syndrome ... signs #symptoms #msk
Medial Meniscus Bucket Handle Tear - MSK Radiology
Imaging Findings:
 • Truncation of the medial meniscus on
Medial Meniscus ... Handle Tear - MSK ... Truncation of the medial ... Case description ... Radiology #diagnosis #msk
Rotator Cuff Syndrome - SITS
Supraspinatus, Infraspinatus, Teres minor, and Subscapularis.
Causes: Calcific supraspinatus tendinitis 
Signs: painful abduction
Rotator Cuff Syndrome ... Causes: Calcific ... Rotator #Cuff #Syndrome ... diagnosis #sports #MSK
Causes of Excessive Daytime Sleepiness - Differential Diagnosis Algorithm
Insufficient Sleep
 • Poor Sleep Hygiene
 • Insomnia
Causes of Excessive ... Restless Legs Syndrome ... Hypoventilation Syndrome ... Medical/Psychiatric ... Parkinson's, MS)
Ear Pain (Otalgia) - Differential Diagnosis Framework

Primary Otalgia 
 - Pain that originates from the ear
Otalgia: • Otitis media ... 10%) • Otitis media ... - Ramsay Hunt syndrome ... Nerve V: • TMJ syndrome ... Temporal arteritis should
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... Defining the cause ... Clinicians should ... , Gitelman's syndrome ... diagnosis #algorithm #causes