1400 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Approach to Joint ... mycobacterial), RA, crystal ... culture, look for crystals ... psoriatic arthritis Crystals ... #Joint #Pain #MSK
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders ... Gout - Uric Acid Crystals ... Pyrophosphate Dihydrate Crystals ... @AmyChung #Joint ... #Disorders #msk
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
Approach to Joint ... pain from: • Joint ... inflammatory arthritides Crystal ... ochronosis and crystal ... #Pain #MSK #rheumatology
Acromioclavicular (AC) Joint Septic Arthritis on POCUS

IVDU with severe left shoulder pain.  Can fully range
Acromioclavicular (AC) Joint ... Scan over AC joint ... 64K WBC with no crystals ... AC joint septic ... clinical #ultrasound #MSK
MTP Gout Effusion on POCUS
50s male with DM/HTN (no hx gout) and great toe pain-MTP joint.
great toe pain-MTP joint ... POCUS revealed joint ... effusion in 1st MTP joint ... MSU crystals=Gout ... POCUS #ultrasound #MSK
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Approach to Joint ... • How many joints ... Inflammatory • Crystal ... #Arthritis #Joint ... Differential #Diagnosis #MSK
Gout: Pathogenesis and Clinical Findings
 - Conditions of rapid cell turnover: hemolysis, psoriasis, lymphoproliferative disorders
 -
easily leaks into joints ... in a peripheral joint ... Neutrophils enter joint ... phagocytose the crystal ... Needle-shaped uric acid crystals
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - Joint ... Clarity, WCC, PMN, Crystals ... positively birefringent crystals ... negatively birefringent crystals ... Arthrocentesis #Joint
These are oxalate crystals, which look like little envelopes (or tetrahedrons, depending upon your point of
These are oxalate crystals ... depending upon your point ... Oxalate crystals ... Microscopy #Oxalate #Crystals
CPPD vs Gout

== CPPD == 

Think About CPPD When:
 • Self-limited synovitis after surgery/trauma (> 65
swelling in weird joints ... Acute CPP Crystal ... MCP, or shoulder joints ... deposition in joints ... attacks • Other joints