29 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
spondyloarthropathies, lupus ... reactive arthritis, gout ... *Always do arthrocentesis ... Parallel, yellow = gout ... #rheumatology #
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - ... Joint Fluid Analysis ... Disease Process: OA ... birefringent crystals), Gout ... #Joint #Syonvial
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders ... Crystalline - Gout ... Osteoarthritis (OA ... Polyarthritis • Systemic Lupus ... with Systemic Lupus
Arthritis of the Hand - Arthritis Patterns

Osteoarthritis:
• Osteoarthritis of the hand usually involves the DIP and
the DIP and PIP joints ... the PIP and MCP joints ... DIP + 1st CMC = OA ... Polyarticular gout ... hand #diagnosis #rheumatology
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
Arthrocentesis of ... does not rule out ... #Differential #Arthrocentesis ... #Joint #Syonvial
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Inflammatory Joint ... Monoarticular • Gout ... Oligoarticular (1-4 joints ... ) • Gout • Psoriatic ... Arthritis • Systemic Lupus
Gout (Gouty Arthritis) - MSK Radiology
Imaging Findings:
 • Eccentric soft-tissue densities surrounding the third proximal interphalangeal
Gout (Gouty Arthritis ... interphalangeal joint ... with joint-space ... appearance, usually joint ... diagnosis #msk #rheumatology
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
stiffness in proximal joints ... Anti-retrovirals, Gemcitabine Lupus ... uncommon 5-15% of lupus ... myopathy) VA Joint ... diagnosis #comparison #rheumatology
Common Forms of Arthritis in the Hands

Acute Rheumatoid Arthritis 
Tender, painful, stiff joints in rheumatoid arthritis,
painful, stiff joints ... interphalangeal joints ... Chronic Tophaceous Gout ... chronic tophaceous gout ... #Hands #Types #Rheumatology
Seronegative Inflammatory Arthritis - Differential Diagnosis
 • Seronegative Rheumatoid Arthritis 
 • Infectious Arthritis: Viral, Bacterial,
Disease: Systemic Lupus ... Crystal Arthropathy: Gout ... Differential #Diagnosis #rheumatology