13 results
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 ... - Differential Diagnosis ... - SLE - Behcet ... Ligamentous injuries - Meniscal ... #msk #physicalexam
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
- Differential Diagnosis ... Reiter’s syndrome) Aseptic ... Erythematosus (SLE ... should have other symptoms ... Joint #Disorders #msk
Systemic Lupus Erythematosus (SLE): Musculoskeletal Manifestations

 • Immune Complex Deposition
    - Arthralgia, Arthritis
- Arthralgia, Arthritis ... Myopathy (Also caused ... #MSK #Musculoskeletal ... pathophysiology #signs #symptoms ... #diagnosis
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
and Workup History ... pylori test (GI symptoms ... test, ANA (e.g., SLE ... ), (neurologic/psychiatric ... #Causes #Workup
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
or nerve root Symptoms ... trauma (e.g., meniscal ... #Joint #Pain #MSK ... rheumatology #approach #workup ... #differential #diagnosis
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
Constitutional symptoms ... , Arthritis, myalgia ... • Immunologic Workup ... Discontinuation of causal ... #rheumatology #diagnosis
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
to Joint Pain - Diagnostic ... Like in this case ... Chronic = RA, SLE ... #Joint #Pain #MSK ... rheumatology #approach #workup
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
- Differential Diagnosis ... Infection • Septic ... Other Causes ... Legg-Calve-Perthes Disease Knee ... Deformity #Limp #MSK
Trendelenburg Gait: Pathogenesis and clinical findings

Skeletal Pathology of the Hip
 • Arthritis
 • Congenital hip dysplasia
of the Hip • Arthritis ... Valgus position of knee ... pathophysiology #causes ... #symptoms #signs ... #diagnosis #msk
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Differential Diagnosis ... constitutional symptoms ... weeks) Can Be Caused ... • SLE • Psoriatic ... #MSK #rheumatology