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Proceedings Paper

Infrared image-guidance for intraoperative assessment of limb length discrepancy during total hip arthroplasty procedures
Author(s): Jerry Yan; Akash Chaurasia; Hannah Takasuka; Aditi Jithendra; Claire State; Kathleen McCarren; Robert Li; Evan Bender; Matthew Hill; Thomas Benassi; Julius Oni; Amir Manbachi
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Paper Abstract

During total hip arthroplasty (THA) procedures, orthopedic surgeons rely on visual and tactile cues to minimize the risk of a limb length discrepancy (LLD) arising from improper implant placement and selection. This paper outlines a novel application of a commercial infrared (IR) motion controller, Leap Motion, to function as an optical tracker of LLD. Additionally, a custom benchtop testing model was used to evaluate accuracy and precision of this commercial IR motion controller against a custom-built IR stereo vision camera. This paper includes a discussion of the algorithms and infrared technology used to image and localize points. The novel design discussed in this paper has clinical applications for a custom-built IR stereo vision setup that will be positioned above the incision site during a THA procedure. Accompanying this solution concept is a fiducial with IR-visible landmarks for quick and accurate point selection and a software algorithm that measures changes between pre- and post-operative leg length.

Paper Details

Date Published: 16 March 2020
PDF: 8 pages
Proc. SPIE 11315, Medical Imaging 2020: Image-Guided Procedures, Robotic Interventions, and Modeling, 113150D (16 March 2020); doi: 10.1117/12.2548860
Show Author Affiliations
Jerry Yan, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Akash Chaurasia, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Hannah Takasuka, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Aditi Jithendra, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Claire State, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Kathleen McCarren, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Robert Li, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Evan Bender, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Matthew Hill, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Thomas Benassi, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Julius Oni, Dept. of Orthopaedic Surgery, Johns Hopkins Bayview Medical Ctr. (United States)
Amir Manbachi, Dept. of Biomedical Engineering, Johns Hopkins Univ. (United States)
Dept. of Neurosurgery, Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 11315:
Medical Imaging 2020: Image-Guided Procedures, Robotic Interventions, and Modeling
Baowei Fei; Cristian A. Linte, Editor(s)

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