Bilateral same-day transtrochanteric rotational osteotomy using computed tomography-based navigation: a case report

This is the first report of a bilateral TRO for bilateral ONFH performed on the same day using CT-based navigation. For osteonecrosis, which is often bilateral, accurate determination of the osteotomy line as planned preoperatively using CT-based navigation contributes to shorter operative time, less intraoperative blood loss, and allows for bilateral same-day surgery. This may improve situations in which patients are hesitant to undergo bone-preserving surgery because of the long period of time required to return to work, thereby facilitating their early reintegration into society.