Determination of pelvic orientation from sparse ultrasound data for THA operated in the lateral position.

B-mode ultrasound imaging has the potential to replace conventional percutaneous digitization of bony landmarks in navigated total hip arthroplasties (THAs). For THAs operated in the lateral position, only one side of the pelvis is freely accessible. This paper presents a new ultrasound to statistical shape model (SSM) registration method for operating the pelvis in the lateral position, based on sparse ultrasound images, which does not interfere with the clinical routine in terms of redraping and repositioning the patient. Schumann S, Nolte LP, Zheng G. Int J Med Robot. 2011 Nov 14. doi: 10.1002/rcs.443. [Epub ahead of print] PMID: 22081512