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Typical Clinical Presentations of Septic Arthritis by Pathogen and Joint Involvement

#Diagnosis #Septic #Arthritis #Differential #History #Presentation
Typical Clinical ... Arthritis by Pathogen ... and Joint Involvement ... #Arthritis #Differential ... Pathogen #Bacteria #Table
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
OA, Traumatic arthritis ... crystals), TB arthritis ... , Septic arthritis ... Effusion #Analysis #Table ... #Infective #Arthritis
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
arthritis; however ... 50,000 #Diagnosis #Differential ... Arthrocentesis #Joint ... Effusion #Analysis #Table ... #Infective #Arthritis
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... Pain - Differential ... Myalgia • Viral Arthritis ... Arthritis - Insidious ... #Orthopedics #Causes
Septic Arthritis - Pathogens and Clinical Clues

Staphylococcus aureus 
Streptococcal spp. 
Neisseria gonorrhoeae 
Aerobic/Anaerobic 
Gram-negative bacteria 
Brucellosis
Septic Arthritis ... Pathogens and Clinical ... Clues Staphylococcus ... #Arthritis #Pathogens ... #Differential #
Risk Factors for Septic Arthritis
Contiguous spread

Skin infection, cutaneous ulcers

Direct inoculation

Previous intraarticular injection

Prosthetic joint: early and delayed
Arthritis Contiguous ... joint: late (Table ... ) Rheumatoid arthritis ... for gonococcal arthritis ... #Infective #Arthritis
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
): • Septic joint ... Lyme), reactive arthritis ... SLE, psoriatic arthritis ... approach #workup #differential ... #diagnosis #arthritis
Septic Arthritis: Pathogenesis and clinical findings
Notes:
- Septic Arthritis is typically monoarticular & the knee is involved
Septic Arthritis ... Pathogenesis and clinical ... findings Notes: - Septic ... Arthritis is typically ... - Typical S.A joint
Causes of Bone/Joint Pain in Sickle Cell Disease
Vaso-occlusive pain:
 • Mechanism: ischemic pain
 • Can present
Causes of Bone/Joint ... Osteomyelitis / Septic ... Arthritis: • ... • Differentiate ... #diagnosis #causes
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Arthritis: - ... : - Reactive arthritis ... - Rheumatoid arthritis ... RA/Idiopathic arthritis ... Poststreptococcal reactive arthritis