19 results
Monoarthritis - Differential Diagnosis
Infection (Acute):
 - S. aureus (most common)
 - S. pneumonia
 - Salmonella (in
birefringent - CPPD ... Sarcoid - Erosive OA ... Differential #Diagnosis #Causes
Ely's Test for Rectus Femoris Tightness

Patient lies prone on the table. The examiner flexes the leg
Ely's Test for Rectus ... lies prone on the table ... buttock, if the hip raises ... off of the table ... #physicalexam #msk
Ely's Test for Rectus Femoris Tightness

Patient lies prone on the table. The examiner flexes the leg
Ely's Test for Rectus ... lies prone on the table ... buttock, if the hip raises ... off of the table ... #physicalexam #msk
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
or pseudogout, OA ... • Non-bloody: OA ... gonorrhea, Lyme, OA ... Like in this case ... #Joint #Pain #MSK
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Causes of Chronic ... Artery Disease • Stable ... • Asthma • COPD ... Pneumonia • ARDS • COPD ... Diagnosis #Algorithm #Causes
Causes of Orthopnea - Differential Diagnosis Framework

 • Fear and Anxiety
 • Pleural Effusion
 • Ascites
Causes of Orthopnea ... • Ascites • COPD ... CNS lesion: ALS, MS ... Differential #Diagnosis #Causes
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
e.g. pneumonia, COPD ... Differential #Diagnosis #Table ... #Causes #Sodium
Non-Invasive Positive Pressure Ventilation
Indications: 
 • COPD exacerbation (↓ intubation, ↓ mortality), Cardiogenic pulmonary edema (↓
Indications: • COPD ... mortality), Other causes ... airway / remove mask
Gout (Gouty Arthritis) - MSK Radiology
Imaging Findings:
 • Eccentric soft-tissue densities surrounding the third proximal interphalangeal
Gouty Arthritis) - MSK ... Case description ... - **MSK rads ... Arthritides (RA, CPPD ... Radiology #diagnosis #msk
Ulcerative Colitis vs Crohn's Disease - IBD Comparison Table
Ulcerative Collitis
 - Location
IBD Comparison Table ... ileum • Most cases ... Amy Chung, MD, MSc ... IBD #Comparison #Table