Development of bony range of motion (B-ROM) boundary for total hip replacement planning

•Developed a representative bony range of motion (B-ROM) to cover all the possible hip joint motions in 3D.•The B-ROM is presented in terms of pure joint motions i.e., amount of flexion-extension, abduction-adduction, internal-external rotations and their combinations.•The B-ROM of a contralateral healthy hip of a patient can be used as a subject-specific target values to determine best possible B-ROM of the planned side.•B-ROM method could be integrated with any exiting hip replacement planning tool.