Would atypical fractures of the hip in a parent (treated with bisphosphonate) be considered when calculating the FRAX score for a patient with osteopenia?

There is no data regarding this question so my response is only my opinion. I would not include a parental hip fracture secondary to bisphosphonate use in the FRAX prediction model since such fractures are not (by definition), typical hip fractures (femoral neck or intertrochanteric regions). Howeve...

I do not claim to know the official FRAX position on atypical femur fractures, however, if a patient had only an atypical femur fracture from the use of bisphosphonates that someone placed them on (for osteoporosis or maybe malignancy), I would answer the question about previous adult fractures “No”...