14 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Pronation - C7, C8 Wrist ... " ± Horner Syndrome ... Wrist drop - Occurs ... sensory #motor #arm #physicalexam
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
Presentations • Wrist ... Benediction - Median ... Nerve #Injuries #Anatomy ... #Differential # ... Diagnosis #MSK #
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... Examination Left hand ... sleeping as in this case ... Nerve #Palsy #PhysicalExam ... #orthopedics #msk
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
Dizziness - Central and ... - Differential ... toxicity • Otitis media ... Amy Chung, MD, MSc ... #Differential #
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... cyanosis - Cool extremity ... #Leg #pain #differential ... diagnosis #lower #extremity ... #msk #physicalexam
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... • Cauda Equina Syndrome ... Medical Emergency ... Commonly caused ... sensory #motor #leg #physicalexam
Rare Causes of Abdominal Pain
 • Hereditary Angioneurotic Edema - Recurrent visceral that may by swelling
external factors • Median ... arcuate ligament syndrome ... - Extremely lean ... Ehlers-Danlos Syndrome ... Abdominal #Pain #differential
One and a Half Syndrome on Physical Exam

This 28 year old patient presented to clinic with
One and a Half Syndrome ... MLF (medial longitudinal ... The most common causes ... diagnosed with MS ... #PhysicalExam #
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential ... often causes arthritis ... + MPO-ANCA MEDIUM ... extremities, upper extremity ... #rheumatology #classification
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Lactic Acidosis - Differential ... patient’s complete medical ... - Compartment syndrome ... Acidosis #Elevation #Differential ... #typea #typeb #classification