46 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Abduction - C8-T1 (ulnar ... Adduction - C7-T1 (ulnar ... to the radial nerve ... in the median nerve ... axillary nerve
Froment’s Test for Ulnar Nerve Palsy

This tests for pinch grip weakness caused by ulnar nerve palsy,
Froment’s Test for Ulnar ... Nerve Palsy ... grip weakness caused ... by ulnar nerve ... #Nerve #Palsy #
Classic signs of arteritic anterior ischemic optic neuropathy or giant cell arteritis are mild arterial narrowing
Korean Journal of Ophthalmology ... cell #arteritis #photo ... #disc #nerve #Ophthalmology
Neuro-OphthaImoIogy - Visual Field Defects - Localization Map
 - Optic Nerve Lesion (Monocular vision loss)
 -
Neuro-OphthaImoIogy ... Map - Optic Nerve ... • Optic nerve ... Diagnosis #Anatomy #Causes ... #Ophthalmology
Unilateral Acute Vision Loss - Differential Diagnosis Algorithm
Painful - Cornea
 • Keratopathy
Painful - No Abnormalities of
Abnormalities of the Optic Nerve ... Abnormalities of the Optic Nerve ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Pathological Optic Disc Cupping

Note cup-to-disc ratio at least 0.8 (physiologic limit of 0.5).

Thinning of optic disc
Usual cause is glaucoma ... Glaucoma causes ... death of optic nerve ... Cupping #fundoscopy #ophthalmology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Ill (Oculomotor) Nerve ... IV (Trochlear) Nerve ... VI (Abducens) Nerve ... Skew Deviation Casey ... #Localization #ophthalmology
“Claw hand” due to ulnar nerve palsy – the patient cannot extend their ring or little
Claw hand” due to ulnar ... nerve palsy – the ... fingers #Clinical #Photo ... #ClawHand #Ulnar ... #Nerve #Palsy
Convergence Retraction Nystagmus with a left 6th nerve palsy

Caused by a Midbrain hemorrhage

Dr. Boby Varkey Maramattom
with a left 6th nerve ... palsy Caused ... video #neurology #ophthalmology
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
a mass as the cause ... Horizontal (Cranial Nerve ... Trauma Cranial Nerve ... Trauma Cranial Nerve ... #Ophthalmology