Fig. 6

Longitudinal radiological images in patients who underwent total hip arthroplasty and those who did not. a Anteroposterior (AP) radiograph of the hip at the first visit in a 68-year-old female with hip pain. White arrow represents joint space width. b Coronal T1-weighted magnetic resonance image (MRI) of the hip at the same week. White arrow represents length of low-intensity band pattern in the femoral head. c AP radiograph of the hip at the final follow up. Joint space narrowing progressed, and she underwent total hip arthroplasty. d AP radiograph of the hip at the first visit in a 47-year-old male with hip pain. White arrow represents joint space width. e Coronal T1-weighted MRI of the hip at the same week. White arrow represents length of low-intensity band pattern in the femoral head. f AP radiograph of the hip at the final follow-up (3 years after the first visit). Patient demonstrated no progression in joint space narrowing