12 results
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
with the distal radius ... with the distal radius ... , triquetrum), radial ... fracture, median nerve ... Carpal #Radiology #XRay
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
Distal Radius Fracture ... Distal radius ... fracture, median nerve ... carpal tunnel syndrome ... Distal #Radiology #XRay
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
Posterior Elbow Dislocation ... lateral epicondyle > radial ... anterior interosseous nerve ... + radial head fracture ... Posterior #Radiology #XRay
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
ulnar shaft with radial ... head dislocation ... posterior interosseous nerve ... ), compartment syndrome ... Ulnar #Radiology #XRay
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
hand" ± Horner Syndrome ... nerve in the radial ... Carpal Tunnel Syndrome ... in the median nerve ... Anterior Shoulder Dislocation
Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
Anterior Shoulder Dislocation ... on axillary x-ray ... view -> Dislocation ... Structural damage to nerves ... #orthopedics #pathophysiology
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
Differential Diagnosis Algorithm ... Neuropathies • Optic Nerve ... Syphilis (light-near dissociation ... Midbrain (Parinaud's Syndrome ... Differential #Diagnosis #Algorithm
Trendelenburg Gait: Pathogenesis and clinical findings

Skeletal Pathology of the Hip
 • Arthritis
 • Congenital hip dysplasia
Superior gluteal nerve ... tears of gluteus medius ... Fracture • Hip dislocation ... Trendelenburg #Gait #pathophysiology
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Guillain-Barre Pathophysiology ... 30%) • Facial Nerve ... • Pain: Due to nerve ... Albuminocytologic dissociation ... intrathecal spinal nerve
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
at an elbow x-ray ... capitellum (age 1), radial ... anterior interosseous nerve ... ), compartment syndrome ... Humerus #Radiology #XRay