Intra-articular discontinuity of the bone surface is visible in 2 perpendicular planes OMERACT,...
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Transcript of Intra-articular discontinuity of the bone surface is visible in 2 perpendicular planes OMERACT,...
Intra-articular discontinuity of the bone surface is visible in 2 perpendicular planes OMERACT, Wakefield and coll. J Rheumatol 2005.
ULTRASOUND DEFINED EROSION IN RA
dorsal longitudinal (A) and transverse longitudinal (B) scans
A B
Erosion of the 2 MC visible in two perpendicular planes: dorsal longitudinal (A) and transverse longitudinal (B) scans
A B
METACARPAL HEAD
Erosion of the 2 MC visible in a longitudinal dorsal scan with inflammatory synovitis and vessels inside the erosion
METACARPAL HEAD
METACARPAL HEAD
Erosion of the 2 MC visible in a longitudinal dorsal scan with inflammatory synovitis and vessels inside the erosion
METACARPAL HEAD
Erosion of the 2 MC visible in a longitudinal dorsal scan in B mode (A) and with Doppler (B): inflammatory synovitis and vessels inside the erosion
A
B
METACARPAL HEAD
A B
Erosion of the 5 MC visible in two perpendicular planes: dorsal longitudinal (A) and transverse longitudinal (B) scans
Several coalescent erosions of the 2 MC visible in two perpendicular planes: dorsal longitudinal (A) and transverse longitudinal (B) scans
METACARPAL HEAD
A B
METACARPAL HEAD
Several coalescent erosions of the 3 MC visible in two perpendicular planes: dorsal longitudinal (A) and transverse longitudinal (B) scans
A B
WRIST
Processus Styloideus of ulna: several coalescent erosions: longitudinal dorsal (A) and transverse dorsal (B) scans
A B
Actual limitations
• Acoustic window• Pitfalls
– physiological vessel bone channels, normal irregularities of cortical bone, grooves, sesamoids
• Co-existent OA may be confused with erosions – pseudo-erosions, osteophytes