6 results
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
- Differential Diagnosis ... Gout - Uric Acid Crystals ... “Pseudogout” - Calcium ... Pyrophosphate Dihydrate Crystals ... #msk #Differential
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
Symptoms of Joint Disease ... Crystal Deposition ... ochronosis and crystal ... #Joint #Pain #MSK ... approach #workup #differential
Differential Diagnosis of Acute Arthritis

Crystal-induced arthritis: Calcium oxalate, gout, cholesterol, pseudogout, hydroxyapatite crystals

Infectious arthritis: Bacteria, fungi,
Differential Diagnosis ... Crystal-induced ... arthritis: Calcium ... hydroxyapatite crystals ... necrosis, clotting disorders
Hydroxyapatite Deposition Disease (HADD) - MSK Radiology
Imaging Findings:
 • Ovoid hypointense structures along the bursal surface
(HADD) - MSK Radiology ... consistent with Calcium ... adjacent to the Calcium ... pathology due to crystal ... other systemic disorders
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
polarized light microscopy ... intracellular urate crystals ... (gout) or calcium ... metabolic or endocrine disorders ... • Serum and urine
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Differential Diagnosis ... Mechanical/degenerative disorders ... Inflammatory • Crystal ... Joint #pain #Differential ... #Diagnosis #MSK