Bone marrow lesions detected by specific combination of MRI sequences are associated with severity of osteochondral degeneration

Table 4 Group with no bone marrow lesions (No BML) vs. groups with BML 1 and BML 2

	No BML vs. BML 1	No BML vs. BML 2
Cartilage
MRI cartilage volume	Not different	Low
OARSI histology score	High	High
Bone marrow pathology
Edema	Not different	High
Fibrosis	Not different	High
Necrosis	Not different	High
Vascularity	High	High
Subchondral bone
Plate thickness	High	Very high
Trabecular bone volume	Not different	High
Osteoid volume and thickness	Not different	High

Changes at tissue level between the No BML group vs. group with BML detected using the fast spin-echo proton density-weighted sequence only, with absent signal on T1-weighted sequence in the same area (BML 1) and the group with BML detected by both fast spin-echo proton density-weighted and T1 sequences (BML 2). MRI magnetic resonance imaging, OARSI Osteoarthritis Research Society International

ISSN: 1478-6362