619 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Approach to Joint ... 3) Number of Joints ... arthritis, gout or pseudogout ... Spondyloarthropathies, gout, pseudogout ... Rhomboid, blue = pseudogout
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - Joint ... arthritis SLE, , RF , Pseudogout ... Arthrocentesis #Joint ... Table #Aspiration #Pseudogout
Chondrocalcinosis: Calcium Pyrophosphate Dihydrate (CPPD) Deposition Disease

 - Acute CPPD precipitation into the joint space ->
precipitation into the joint ... crystals -> Acute pseudogout ... precipitation into joint ... selected MCP/PIP joints ... Chondrocalcinosis #Pseudogout
Pseudogout: pathogenesis and clinical findings
 - Idiopathic (vast majority of cases) -> Mechanism unknown
 - Familial
Pseudogout: pathogenesis ... crystals from joints ... warm, swollen joint ... sclerosis & cysts, joint ... Chondrocalcinosis #Pseudogout
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Inflammatory Joint ... Podagra, Tophi) • Pseudogout ... Oligoarticular (1-4 joints ... POLYARTICULAR (>4 joints
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders ... Crystals - “Pseudogout ... Lumbar Spine and SI Joints ... @AmyChung #Joint
Synovial Fluid Analysis:

Findings (COLOR	TRANSPARENCY	VISCOSITY	WBC COUNT (PER MM3)	PMN CELL COUNT (%)	GRAM STAIN	CULTURE	PCR TEST	CRYSTALS)

By Condition (Normal 
Noninflammatory 
Inflammatory:
Arthrocentesis #Joint ... Table #Aspiration #Pseudogout
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
Arthrocentesis #Joint ... Table #Aspiration #Pseudogout
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Approach to Joint ... • How many joints ... induced (Gout/Pseudogout ... Lyme • Gout/Pseudogout ... #Arthritis #Joint
Knee Effusions - Arthrocentesis Interpretation

Inflammatory arthritis:
 • Color: Yellow-> Green
 • Clarity: Opaque
 • Viscosity: Low
Gout • CPPD: Pseudogout ... diagnosis #septic #joint