619 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Approach to Joint ... spondyloarthropathies, lupus, OA ... or pseudogout, OA ... • Non-bloody: OA ... gonorrhea, Lyme, OA
Osteoarthritis (OA): Clinical findings
 • Stimulation of joint nociceptors in subchondral bone -> Pain with loading
Osteoarthritis (OA ... Stimulation of joint ... loading / use of joint ... movement of the joint ... Osteoarthritis #OA
Osteoarthritis (OA): X-ray features 
 - Joint space narrowing (least specific)
 - Subchondral Cysts (pockets of
Osteoarthritis (OA ... features - Joint ... surrounding the joint ... Osteoarthritis #OA
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - Joint ... Disease Process: OA ... Arthrocentesis #Joint
Arthritis of the Hand - Arthritis Patterns

Osteoarthritis:
• Osteoarthritis of the hand usually involves the DIP and
the DIP and PIP joints ... the PIP and MCP joints ... but not the DIP joints ... 5% of times Joint ... DIP + 1st CMC = OA
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders ... Lumbar Spine and SI Joints ... Osteoarthritis (OA ... @AmyChung #Joint
CPPD vs Gout

== CPPD == 

Think About CPPD When:
 • Self-limited synovitis after surgery/trauma (> 65
swelling in weird joints ... Osteoarthritis with CPPD: OA ... MCP, or shoulder joints ... deposition in joints ... attacks • Other joints
Rheumatoid arthritis (RA): Pathogenesis and Joint diseases features
 • RA affects 1% of population, women >
Pathogenesis and Joint ... poly-articular joint ... affecting the small joints ... Joint involvement ... space decr joint
Pseudogout Summary - Calcium Pyrophosphate Deposition Disease (CPPD)

Pathophysiology:
Pyrophosphate produced by chondrocytes likely precipitates with calcium to
swelling in weird joints ... metacarpophalangeal joints ... Osteoarthritis With CPPD OA ... MCP or shoulder joints
Rheumatoid Arthritis - 2020 ACR-EULAR Classification
≥ 6 of 10 points = definite RA
Joint Involvement:
= definite RA Joint ... 2-10 large joints ... , +/- large joints ... points >10 joints ... least 1 small joint