Computer-assisted arthroplasty using bioengineered autografts

Recent advances in tissue-engineered cartilage open the door to new clinical treatments of joint lesions. Common to all therapies with in-vitro-engineered autografts is the need for optimal fit of the construct to allow screwless implantation and optimal integration into the live joint. Computer-ass...

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Bibliographic Details
Published in:IEEE engineering in medicine and biology magazine 2006-07, Vol.25 (4), p.63-69
Main Authors: Sidler, R., Gonzalez Ballester, M.A., Bonel, H.M., Styner, M., Bardyn, T., Nolte, L.-P., Sudkamp, N.P., Kostler, W.
Format: Article
Language:English
Subjects:
Ankle Joint - physiopathology
Ankle Joint - surgery
Arthroplasty - instrumentation
Arthroplasty - methods
Assembly
Biomedical Engineering - methods
Computed tomography
Computer aided manufacturing
Computer-Aided Design
Content addressable storage
Feasibility Studies
Humans
Implants
Joint surgery
Joints
Lesions
Medical treatment
Pilot Projects
Shape
Software
Surgery
Surgery, Computer-Assisted - methods
Surgical apparatus & instruments
Transplantation, Autologous - instrumentation
Transplantation, Autologous - methods
User-Computer Interface
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Summary:Recent advances in tissue-engineered cartilage open the door to new clinical treatments of joint lesions. Common to all therapies with in-vitro-engineered autografts is the need for optimal fit of the construct to allow screwless implantation and optimal integration into the live joint. Computer-assisted surgery (CAS) techniques are prime candidates to ensure the required accuracy, while at the same time simplifying the procedure. A pilot study has been conducted aiming at assembling a new set of methods to support ankle joint arthroplasty using bioengineered autografts. Computer assistance allows planning of the implant shape on a computed tomography (CT) image, manufacturing the construct according to the plan, and interoperatively navigating the surgical tools for implantation. A rotational symmetric model of the joint surface was used to avoid segmentation of the CT image; new software was developed to determine the joint axis and make the implant shape parameterizable. A complete cycle of treatment from planning to operation was conducted on a human cadaveric foot, thus proving the feasibility of computer-assisted arthroplasty using bioengineered autografts
ISSN:0739-5175
1937-4186
DOI:10.1109/MEMB.2006.1657789