11 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Effusions - Septic ... (1%) - Watch out ... Effusions: - Gout ... - Pseudo gout ... differential #diagnosis #msk
Gout (Gouty Arthritis) - MSK Radiology
Imaging Findings:
 • Eccentric soft-tissue densities surrounding the third proximal interphalangeal
Gout (Gouty Arthritis ... mass and NO prior signs ... • This case should ... • Gout can present ... #Gouty #Arthritis
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Monoarthritis • Septic ... Crystalline - Gout ... Erythematosus (SLE), should ... Amy Chung, MD, MSc ... Joint #Disorders #msk
Knee Effusions - Arthrocentesis Interpretation

Inflammatory arthritis:
 • Color: Yellow-> Green
 • Clarity: Opaque
 • Viscosity: Low
Knee Effusions - ... Inflammatory arthritis ... Culture: Negative Septic ... analysis: • MSU ... : Gout • CPPD:
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
noninflammatory Signs ... Very hard to get out ... Crystal induced (Gout ... fever • Lyme • Gout ... Differential #Diagnosis #MSK
Gout - Diagnosis and Management Summary

3 Conditions for Gout to Manifest:
1. Hyperuricemia
2. Monosodium urate deposition in
forefoot, ankles, knees ... frequent attacks • Arthritis ... not possible • Ultrasound ... double contour sign ... Dual-energy CT → MSU
Purulent Ankle Joint on POCUS
Young patient 2 weeks status post ORIF of ankle fracture presents with
flowing in and out ... found to have septic ... arthritis and osteomyelitis ... POCUS #clinical #ultrasound ... #msk #infected
Baker's Cyst on POCUS 
63yo w p/w pain and swelling behind knee.  Probe on knee
dx) that pops out ... Sign of intraarticular ... Global Ultrasound ... #Cyst #POCUS #ultrasound ... #msk
TISSUE APPEARANCES ON 
MUSCULOSKELETAL ULTRASOUND 

Bone:
 
Bone is represented as a very bright structure and appears
to fibroadipose septa ... honeycomb’ or ‘pepper pot ... interrogation as it should ... infrapatellar bursa of the knee ... MUSCULOSKELETAL #MSK
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
monophasic Pathophysiology ... • Bilateral signs ... • Must rule out ... , MOG-IgG test should ... need to be ruled out