17 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Knee Effusion ... Fever/Chills/Joint ... Effusions - Septic ... Intra-articulation fracture - Patellar ... diagnosis #msk #
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - Joint ... Fluid Analysis Effusion ... , Septic arthritis ... #Diagnosis #Differential ... Arthrocentesis #Joint
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Diagnosis Algorithm ... Infection • Septic ... Legg-Calve-Perthes Disease Knee ... Deformity #Limp #MSK ... #Differential #
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
- Differential Diagnosis ... Monoarthritis • Septic ... “Bamboo Spine” Fusion ... #Disorders #msk ... #Differential #
Evaluation of Suprapatellar Knee Effusion (normal knee) on Point of Care Ultrasound (POCUS)

POCUS for knee effusions:
knee) on Point ... ) POCUS for knee ... joint, so scan ... proximal to the patella ... #MSK #POCUS #Clinical
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
arthritis; however ... , the diagnosis ... #Differential # ... Arthrocentesis #Joint ... Syonvial #Fluid #Effusion
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... Pain - Differential ... Diagnosis Algorithm ... Polyarticular Join ... Infectious #JointPain #MSK
Acromioclavicular (AC) Joint Septic Arthritis on POCUS

IVDU with severe left shoulder pain.  Can fully range
Septic Arthritis ... Diagnosis? ... septic arthritis ... #Effusion #POCUS ... clinical #ultrasound #MSK
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Pain - Diagnostic ... ): • Septic joint ... #Joint #Pain #MSK ... approach #workup #differential ... #diagnosis #arthritis
Knee Effusions - Arthrocentesis Interpretation

Inflammatory arthritis:
 • Color: Yellow-> Green
 • Clarity: Opaque
 • Viscosity: Low
Knee Effusions - ... Inflammatory arthritis ... analysis: • MSU ... Interpretation #diagnosis ... #septic #joint