57 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Pronation - C7, C8 Wrist ... hand" ± Horner Syndrome ... Wrist drop - Occurs ... Carpal Tunnel Syndrome ... sensory #motor #arm #physicalexam
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
- Differential ... canal dehiscence syndrome ... • Cogan's syndrome ... Amy Chung, MD, MSc ... #Differential #
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... sleeping as in this case ... trauma_modern #Wrist ... #Nerve #Palsy #PhysicalExam ... #orthopedics #msk
Phalen's Test for Carpal Tunnel Syndrome

Phalen's test evaluates for carpal tunnel syndrome. 
Fully flex wrists and
Carpal Tunnel Syndrome ... carpal tunnel syndrome ... Fully flex wrists ... #Wrist #PhysicalExam ... video #sports #msk
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... Bone/Joint Causes ... #Leg #pain #differential ... lower #extremity #msk ... #physicalexam
Phalen's Test for Carpal Tunnel Syndrome

Phalen's test evaluates for carpal tunnel syndrome. 
Fully flex wrists and
Carpal Tunnel Syndrome ... carpal tunnel syndrome ... Fully flex wrists ... #Wrist #PhysicalExam ... video #sports #msk
Causes of Excessive Daytime Sleepiness - Differential Diagnosis Algorithm
Insufficient Sleep
 • Poor Sleep Hygiene
 • Insomnia
Causes of Excessive ... Daytime Sleepiness - Differential ... Restless Legs Syndrome ... Hypoventilation Syndrome ... Parkinson's, MS)
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
One-and-a-half Syndrome ... Skew Deviation Casey ... ophthalmology #neurology #differential ... #diagnosis #ocular
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Demyelinating Disease (MS ... Guillain-Barre syndrome ... Lambert Eaton Syndrome ... #differential #
Causes of Portal Hypertension According to Site of Vascular Obstruction
1) Prehepatic pre-sinusoidal: Portal vein thrombosis due
Causes of Portal ... liver disease, Nodular ... post-sinusoidal: Budd-Chiari syndrome ... portalhypertension #phtn #differential ... #diagnosis #causes