23 results
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Bowel Disease - Arthropathy ... Osteoarthritis (OA ... Diagnosis #Algorithm #arthropathy
Arthritis of the Hand - Arthritis Patterns

Osteoarthritis:
• Osteoarthritis of the hand usually involves the DIP and
Dactylitis Jaccoud's Arthropathy ... DIP + 1st CMC = OA ... Causalgia • Charcot arthropathy
Jaccoud's Arthropathy on Physical Examination

Deforming non-erosive arthropathy characterized by ulnar deviation of the second to fifth
Jaccoud's Arthropathy ... Deforming non-erosive arthropathy ... 1869 Jaccoud's arthropathy ... with Rheumatoid Arthropathy ... In Jaccoud's Arthropathy
Osteoarthritis (OA): X-ray features 
 - Joint space narrowing (least specific)
 - Subchondral Cysts (pockets of
Osteoarthritis (OA ... Osteoarthritis #OA
Osteoarthritis (OA): Clinical findings
 • Stimulation of joint nociceptors in subchondral bone -> Pain with loading
Osteoarthritis (OA ... Osteoarthritis #OA
Seronegative Inflammatory Arthritis - Differential Diagnosis
 • Seronegative Rheumatoid Arthritis 
 • Infectious Arthritis: Viral, Bacterial,
Myopathy • Crystal Arthropathy
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Disease Process: OA
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
spondyloarthropathies, lupus, OA ... or pseudogout, OA ... • Non-bloody: OA ... gonorrhea, Lyme, OA
Monoarthritis - Differential Diagnosis
Infection (Acute):
 - S. aureus (most common)
 - S. pneumonia
 - Salmonella (in
Sarcoid - Erosive OA
Diabetic Foot: Pathogenesis and clinical findings
 • Polyol Pathway - Excess glucose enters Polyol pathway ->
diabetes Charcot Arthropathy ... and destructive arthropathy