11 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Fever/Chills/Joint pain ... - Septic Arthritis ... (1%) - Watch out ... : - Gout - Pseudo ... gout - Osteoarthritis
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Joint Disorders - Differential ... Monoarthritis • Septic ... Crystalline - Gout ... “Bamboo Spine” Fusion ... Erythematosus (SLE), should
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
axial (spine, shoulders ... Very hard to get out ... Crystal induced (Gout ... fever • Lyme • Gout ... Diagnosis #MSK #
MTP Gout Effusion on POCUS
50s male with DM/HTN (no hx gout) and great toe pain-MTP joint.
MTP Gout Effusion ... DM/HTN (no hx gout ... and great toe pain-MTP ... Just tx as gout? ... MSU crystals=Gout
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
reactive arthritis, gout ... Spondyloarthropathies, gout ... Parallel, yellow = gout ... #Joint #Pain #MSK ... approach #workup #differential
Acromioclavicular (AC) Joint Septic Arthritis on POCUS

IVDU with severe left shoulder pain.  Can fully range
with severe left shoulder ... pain. ... Tender on top of shoulder ... POCUS #clinical #ultrasound ... #MSK
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... Arthritis • Gout ... Poikilothermia • Septic ... #differential # ... lower #extremity #msk
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
be made, rule out ... Raise Test - Pain ... MeralgiaParesthetica #MSK ... #pathophysiology ... #differential #
Purulent Ankle Joint on POCUS
Young patient 2 weeks status post ORIF of ankle fracture presents with
presents with ankle pain ... flowing in and out ... found to have septic ... POCUS #clinical #ultrasound ... #msk #infected
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
monophasic Pathophysiology ... or without back pain ... • Must rule out ... need to be ruled out ... management #neurology #differential