11 results
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - ... Joint Fluid Analysis ... Disease Process: OA ... Effusion #Analysis #Table ... Pseudogout #Septic #Infective
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
or pseudogout, OA ... *Always do arthrocentesis ... • Non-bloody: OA ... with bacterial infection ... infection.
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
Arthrocentesis of ... #Differential #Arthrocentesis ... #Joint #Syonvial ... Effusion #Analysis #Table ... Pseudogout #Septic #Infective
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:
#Diagnosis #Arthrocentesis ... #Joint #Syonvial ... Effusion #Analysis #Table ... Pseudogout #Septic #Infective
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders ... Lumbar Spine and SI Joints ... within 1 month of infection ... Osteoarthritis (OA ... @AmyChung #Joint
Debridement and Management of Prosthetic Joint Infection (PJI)
Duration of symptoms <3 weeks OR  <30 days
of Prosthetic Joint ... Infection (PJI) ... should prompt arthrocentesis ... CRP and/or do arthrocentesis ... PJI #Prosthetic #Joint
Hepatitis B (HBV) Serology

HBsAg - Presence denotes current HBV infection (chronic or acute)
HBV Core Antibody -
denotes current HBV infection ... Marker of HepB infection ... at some point ... - acute/recent infection ... Interpretation #Table
Risk Factors for Septic Arthritis
Contiguous spread

Skin infection, cutaneous ulcers

Direct inoculation

Previous intraarticular injection

Prosthetic joint: early and delayed
spread Skin infection ... injection Prosthetic joint ... early and delayed (Table ... 6) Recent joint ... : late (Table 6)
CPPD vs Gout

== CPPD == 

Think About CPPD When:
 • Self-limited synovitis after surgery/trauma (> 65
swelling in weird joints ... Osteoarthritis with CPPD: OA ... diagnose concomitant infection ... deposition in joints ... Diagnose concomitant infection
Gout - Diagnosis and Management Summary

3 Conditions for Gout to Manifest:
1. Hyperuricemia
2. Monosodium urate deposition in
deposition in joints ... attacks • Other joints ... Diagnose concomitant infection ... Uncertain diagnosis or arthrocentesis