72-year-old woman who presented with pain 10 months after cannulated screw fixation of impacted femoral neck fracture.
A and B, Coronal proton density–weighted fast spin-echo multiacquisition variable-resonance image combination (MAVRIC) MR image (A) shows osteonecrosis of superior portion of femoral head without associated subchondral collapse (arrow), which could not be appreciated on non-MAVRIC proton density–weighted fast spin-echo pulse sequence (B).