368 results
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - ... Disease Process: OA ... #Differential #Arthrocentesis ... 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 ... prosthetic joint infection
Osteoarthritis (OA): X-ray features 
 - Joint space narrowing (least specific)
 - Subchondral Cysts (pockets of
Osteoarthritis (OA ... Osteoarthritis #OA ... diagnosis #findings #Clinical
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
Arthrocentesis of ... #Differential #Arthrocentesis ... Pseudogout #Septic #Infective
Monoarthritis - Differential Diagnosis
Infection (Acute):
 - S. aureus (most common)
 - S. pneumonia
 - Salmonella (in
Differential Diagnosis Infection ... - Gonococcal infection ... Infection (Chronic ... Sarcoid - Erosive OA
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 ... Pseudogout #Septic #Infective
Osteoarthritis (OA): Clinical findings
 • Stimulation of joint nociceptors in subchondral bone -> Pain with loading
Osteoarthritis (OA ... ): Clinical findings ... Osteoarthritis #OA
Fluid Analysis 
A systematic approach to analysis of the fluid in conjunction with the clinical presentation
conjunction with the clinical ... #paracentesis #arthrocentesis
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
within 1 month of infection ... Osteoarthritis (OA
Debridement and Management of Prosthetic Joint Infection (PJI)
Duration of symptoms <3 weeks OR  <30 days
Prosthetic Joint Infection ... sx of relapsed infection ... should prompt arthrocentesis ... CRP and/or do arthrocentesis ... Prosthetic #Joint #Infection