14 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
- C7, C8 (radial ... nerve in the radial ... in the median nerve ... Myotomes #diagnosis #neurology ... sensory #motor #arm
Radial Nerve Anatomy and Function
The Radial nerve is the nerve of elbow, wrist and digital extension.
Radial Nerve Anatomy ... and digital extension ... the back of the arm ... Radial nerve (or ... #diagnosis #neurology
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
- Radial Nerve Palsy ... compression of the radial ... affected limb, also ... #Drop #Radial # ... Nerve #Palsy #PhysicalExam
Synkinetic Wrist Extension Maneuver demonstrating Radial Nerve Palsy as cause for Wrist Drop

Up up, down down.
Nerve Palsy as ... cause for Wrist ... nerve palsy with ... nerve palsy. ... #Radial #Nerve
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
palsyMedial ... One-and-a-half Syndrome ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
• CN VI palsy ... • Neurologic ... suggest a mass as ... depress when looking medially ... #Ophthalmology
One and a Half Syndrome on Physical Exam

This 28 year old patient presented to clinic with
formation) and MLF (medial ... of this are tumors ... diagnosed with MS ... clinical #video #ophthalmology ... #neurology
Mastoiditis: Pathogenesis and clinical findings

Acute or Chronic Otitis Media -> 
Stage 1: Hyperemeia of the mastoid
mastoid cavity as ... mastoid air cells are ... cavities Stage 5: Extension ... Inferior through medial ... nerve palsy
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
evaluation should also ... include a: • Neurologic ... disruption ○ Otitis media ... II ○ Susac’s syndrome ... Noise trauma ○ MS
Sarcoidosis - Diagnosis and Management Summary
Epidemiology
1) High incidence in Scandinavian countries (11-24 cases per 100,000 individuals
Many symptoms are ... mediators such as ... anterior/posterior MSK ... erythema nodosum (extensor ... palsy.