21 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
): • Septic joint ... • WBC >20k: Septic ... - parvovirus, HIV ... #Joint #Pain #MSK ... approach #workup #differential
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... Pain - Differential ... Polyarticular Join ... rash) • Primary HIV ... Infectious #JointPain #MSK
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Elevated ESR, Normal ... muscle weakness • Normal ... CK, Detectable HIV ... Myopathies #myopathy #differential ... #diagnosis #comparison
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
Interpretation - Normal ... Inflammatory - Septic ... 50,000 #Diagnosis #Differential ... Arthrocentesis #Joint ... Effusion #Analysis #Table
Etiologies of Hypoaldosteronism

Hyporeninemic Hypoaldosteronism (Low Renin, Low Aldosterone)
 - Diabetic Nephropathy 
 - NSAIDs
Non-Hyporeninemic Hypoaldosteronism (Normal
Inhibitors - Chronic heparin ... or High Renin, Normal ... Hypoaldosteronism #Differential ... #Aldosterone #Comparison ... #Table #Causes
Appearance of Liver Lesions on Various Imaging Modalities
 • Computed Tomography (CT) - Arterial Phase, Portal
Dysplastic nodule, Hepatic ... Liver #Lesions #Hepatic ... POCUS #radiology #differential ... #diagnosis #comparison ... #table #appearance
Appearance of Liver Lesions on Computed Tomography (CT) - Arterial Phase, Portal Venous Phase and Delayed
Arterial Phase, Portal ... Liver #Lesions #Hepatic ... CT #radiology #differential ... #diagnosis #comparison ... #table #appearance
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... Herpes zoster - HIV ... #Leg #pain #differential ... lower #extremity #msk ... #physicalexam
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Knee Effusions - Differential ... Fever/Chills/Joint ... Knee Effusions - Septic ... #diagnosis #msk ... #physicalexam
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Deformity / Limp - Differential ... Infection • Septic ... JointHip Dysplasia ... Deformity #Limp #MSK ... #Differential #