8 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Reflexes: • Knee ... • Cauda Equina Syndrome ... such as fibular fracture ... #Myotomes #diagnosis ... #neurology #sensory
Humeral Avulsion of the Inferior Glenohumeral Ligament (HAGL)
 • Imaging Findings:
 • Large defect of the
shoulder instability ... Differential diagnosis ... BHAGL): Avulsion fracture ... mri #clinical #Radiology ... #diagnosis #msk
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... Motor Function Shoulder ... Anterior Shoulder ... #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
Levels Spinal Root Sensory ... None T7-T12 See Dermatomes ... Abdominal Reflex L2 Anterior ... #differential #diagnosis ... #Neurology #Spine
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
elbow x-ray review alignment ... identified but anterior ... ), compartment syndrome ... Elbow #Humerus #Radiology ... #XRay #Diagnosis
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
L5/S1 with an inferior ... and/or genital sensory ... Differential Diagnosis ... region (S2-S4 dermatomes ... #causes #neurology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
result in permanent neurologic ... at the level of sensory ... Vertebral burst fracture ... #differential #diagnosis ... #neurology
Transient Patellar Dislocation - MSK Radiology
Imaging Findings:
 • Hyperintense marrow edema of the anterolateral femoral condyle
Dislocation - MSK Radiology ... patellofemoral ligament ... disrupted at the anterior ... injury of the knee ... #diagnosis #msk