Jason Hostetter
F Roemer, C Kwoh, et. al.
Background:
Preoperative decision making for knee replacement complex process
Radiography: only osseous structures, only advanced disease
MRI: bone marrow, synovitis, effusion, periarticular cystic lesions, meniscal tears
Does presence/severity of MR abnormalities differ between operative/non-operative joints?
Osteoarthritis Initiative
4796 participants studied with Xray and MRI for 5 years
Case Knees
Control Knees
Interpretation
Assessed
Subregional joint division using MRI Osteoarthritis Knee Score (MOAKS)
BML assessment according to size
Grade 1
Grade 2
Grade 3
Intra/inter-reader reliability
Analyzed on whole knee and compartmental level
Assessed risk of knee replacement related to:
Statistics performed...
Any Hoffa or effusion synovitis (OR 2.2, 4.8)