59 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Approach to Joint ... 3) Number of Joints ... (bacterial, gonococcal ... Like in this case ... #Joint #Pain #MSK
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... Polyarticular Join ... • Disseminated Gonoccocal ... Infectious #JointPain #MSK ... #Orthopedics #Causes
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:
Infectious: gonococcal ... Arthrocentesis #Joint ... Effusion #Analysis #Table
Septic Arthritis: Pathogenesis and clinical findings
Notes:
- Septic Arthritis is typically monoarticular & the knee is involved
involved in >50% of cases ... - Typical S.A joint ... S.A. can also be caused ... most common non-gonnococcal
Acute Joint Pain - Vitamin CD Mnemonic
Vascular
Infectious
Trauma - Multiple injury sites, Open Fracture, Infectious joint pain
Autoimmune
Acute Joint Pain ... Fracture, Infectious joint ... See inflammatory joint ... VitaminCD #Mnemonic #MSK ... differential #diagnosis #Causes
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Inflammatory Joint ... Oligoarticular (1-4 joints ... POLYARTICULAR (>4 joints ... Inflammatory #JointPain #MSK ... #Orthopedics #Causes
Chronic Joint Pain - Differential Diagnosis Algorithm 
Intra-Articular
 - Bone
     • Stress
Chronic Joint Pain ... • Charcot Joint ... Chondromalacia - Joint ... Intraarticular #MSK ... #Orthopedics #Causes
Mallet Finger
Absence of a fracture does NOT exclude Mallet finger, the extension function of the DIP
function of the DIP joint ... Finger deformity caused ... distal to the DIP joint ... and tender DIP joint ... #Orthopedics #MSK
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Approach to Joint ... • How many joints ... • Infectious (Gonococcal ... weeks) Can Be Caused ... Differential #Diagnosis #MSK
Humeral Avulsion of the Inferior Glenohumeral Ligament (HAGL)
 • Imaging Findings:
 • Large defect of the
outside of the joint ... Case description ... HAGL) can be a cause ... the defective joint ... Radiology #diagnosis #msk