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Fig. 3E. —78-year-old man with lateral tibial plateau removed at arthroplasty. B₀ = main magnetic field. Low-power scanning electron micrograph shows same sample (A–D) acquired after tissue was first cut into 2-mm-thick slab in plane of imaging and then fractured perpendicular to that plane. Cut surface (CS) faces viewer and subchondral bone (B) is at bottom of image. Plane of fracture extends perpendicularly from subchondral bone in deep region (small arrows) of tissue and then curves into plane of joint surface (large arrow). Level of curve matches location of transitional layer on spin-echo image (A) and T2 map (B) obtained with surface perpendicular to B₀.