1574 results
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:
STAIN CULTURE PCR TEST ... CRYSTALS) By ... Arthrocentesis #Joint
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
intracellular urate crystals ... pyrophosphate dihydrate crystals ... spondylitis - Sacroiliac joint ... of the affected joint ... • Sacroiliac joint
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 ... Number of Joints ... culture, look for crystals ... psoriatic arthritis Crystals
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
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
Approach to Joint ... present both at rest ... improves quickly with rest ... inflammatory arthritides Crystal ... ochronosis and crystal
Rheumatoid arthritis (RA): X-ray features
 • Soft tissue swelling (best seen by comparing left & right
tissue swelling (best ... together) • Joint ... closer to the joints ... (Joint deformities ... Best visualized
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders ... Gout - Uric Acid Crystals ... Pyrophosphate Dihydrate Crystals ... Lumbar Spine and SI Joints ... @AmyChung #Joint
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
Chronic Shoulder Pain - Differential Diagnosis Algorithm
4 tests for the AC joint:
1. Direct palpation
2. Cross-arm shoulder
Diagnosis Algorithm 4 tests ... for the AC joint ... after cross-arm test