13 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Syndrome Wrist drop ... damage to the radial ... nerve in the radial ... #Myotomes #diagnosis ... #neurology #sensory
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Respiration None C5 Radial ... Reflex L2 Anterior Medial ... Cremasteric Reflex L3 Medial ... Extension None L4 Medial ... #diagnosis #Neurology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Reflexes: • Knee ... Medical Emergency ... Neuropathy - Foot drop ... Commonly caused ... #neurology #sensory
Medial Meniscus Bucket Handle Tear - MSK Radiology
Imaging Findings:
 • Truncation of the medial meniscus on
Medial Meniscus ... Truncation of the medial ... Differential diagnosis ... DrvonBorstel #Medial ... #mri #clinical
Pes Anserine Bursitis - MSK Radiology
Imaging Findings:
 • T2-hyperintense fluid-like signal along the medial aspect of
signal along the medial ... tendons and the medial ... Differential diagnosis ... found superior and medial ... between medial
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Nerve palsy • Medial ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential ... #diagnosis #ocular
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... • Neurologic ... depress when looking medially ... #DoubleVision #Differential ... #Causes #Ophthalmology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Diagnosis: • ... region (S2-S4 dermatomes ... Imaging studies: • MRI ... #diagnosis #causes ... #neurology
One and a Half Syndrome on Physical Exam

This 28 year old patient presented to clinic with
formation) and MLF (medial ... MRI was ordered ... the hospital, diagnosed ... clinical #video #ophthalmology ... #neurology
Subchondral Insufficiency Fracture
Imaging Findings:
 • Circle demarcating the region of edema within the medial femoral condyle.
edema within the medial ... signal within the medial ... Osteonecrosis of the Knee ... common of the medial ... Differential diagnosis