41 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... , C8 (radial) Finger ... hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... Anterior Shoulder
Characteristic clinical manifestations of Down syndrome 
 
Typical craniofacial appearance 
 • Round face and flat
manifestations of Down syndrome ... incurved fifth finger ... disease Later medical ... secretory otitis media ... #Downs #Syndrome
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
Axillary Nerve Shoulder ... Radial Nerve Fingers ... Flexion C8 Median ... Nerve Fingers ... #MuscleGroups #MSK
Median Nerve Tension Test (Upper-Limb Neurodynamic Tests, ULNT2)

To assess for Median Nerve Peripheral Neuropathy

Elbow extension →
Elbow extension → shoulder ... wrist dorsiflexion/finger ... extension → shoulder ... #physicalexam #sports ... #msk #orthopedics
Median Nerve Tension Test (Upper-Limb Neurodynamic Tests, ULNT1)

To assess for Median Nerve Peripheral Neuropathy

Shoulder abduction →
Neuropathy Shoulder ... wrist dorsiflexion/finger ... extension → shoulder ... #physicalexam #sports ... #msk #orthopedics
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
tea cup") which should ... dorsally and no longer ... styloid fracture, median ... #Orthopedics #Sports ... #MSK
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
• Colles (90% "dinner ... styloid fracture, median ... carpal tunnel syndrome ... reduction using finger ... #Orthopedics #MSK
Evaluation of Electrical Injury in the Emergency Department 

Common Injuries by System:

CNS - Seizure, coma, spinal
ED arrival MSK ... dislocations (posterior shoulder ... compartment syndrome ... Management #Emergency #Algorithm
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
canal dehiscence syndrome ... • Cogan's syndrome ... toxicity • Otitis media ... Amy Chung, MD, MSc ... Differential #Diagnosis #algorithm
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Differential Diagnosis Algorithm ... of hypokalemia starts ... Clinicians should ... , Gitelman's syndrome ... differential #diagnosis #algorithm