53 results
Knee Effusions - Arthrocentesis Interpretation

Inflammatory arthritis:
 • Color: Yellow-> Green
 • Clarity: Opaque
 • Viscosity: Low
Knee Effusions - ... Inflammatory arthritis ... Viscosity: Low • WBC ... : Variable • WBC ... Viscosity: High • WBC
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
WBC <2k: Noninflammatory ... lower limbs) • WBC ... spondyloarthropathies • WBC ... presentation with lower WBC ... #Joint #Pain #MSK
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... Fever/Chills/Joint ... Arthritis: - ... : - Reactive arthritis ... differential #diagnosis #msk
Acromioclavicular (AC) Joint Septic Arthritis on POCUS

IVDU with severe left shoulder pain.  Can fully range
showed effusion ... WBC/CRP/ESR elevated ... Arthrocentesis-64K WBC ... #clinical #ultrasound ... #MSK
Septic arthritis of the elbow on Point of Care Ultrasound (POCUS)

66M w painful, swollen R elbow
Septic arthritis ... thickening and joint ... effusion seen between ... Synovial fluid WBC ... #elbow #Joint #
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - Joint ... Fluid Analysis Effusion ... Color, Clarity, WCC ... Arthrocentesis #Joint ... Syonvial #Fluid #Effusion
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:
TRANSPARENCY VISCOSITY WBC ... Arthrocentesis #Joint ... Syonvial #Fluid #Effusion ... Septic #Infective #Arthritis
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
rule out septic arthritis ... with synovial WBC ... Arthrocentesis #Joint ... Syonvial #Fluid #Effusion ... Septic #Infective #Arthritis
Evaluation of Suprapatellar Knee Effusion (normal knee) on Point of Care Ultrasound (POCUS)

POCUS for knee effusions:
Effusion (normal ... knee) on Point ... of Care Ultrasound ... joint, so scan ... #MSK #POCUS #Clinical
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
suggested by warmth, effusion ... , erythema and WBC ... with few WBCs ( ... the morning • Effusion ... #Diagnosis #MSK