Computer-assisted LISS plate osteosynthesis of proximal tibia fractures: Feasibility study and first clinical results

Grützner, Paul; Langlotz, Frank; Zheng, Guoyan; Recum, Jan Von; Keil, Christina; Nolte, Lutz-Peter; Wentzensen, Andreas; Wendl, Klaus (2005). Computer-assisted LISS plate osteosynthesis of proximal tibia fractures: Feasibility study and first clinical results. Computer aided surgery, 10(3), pp. 141-149. Taylor & Francis 10.3109/10929080500229660

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Fluoroscopy is the most common tool for the intraoperative control of long-bone fracture reduction. Limitations of this technology include high radiation exposure for the patient and the surgical team, limited visual field, distorted images, and cumbersome verification of image updating. Fluoroscopy-based navigation systems partially address these limitations by allowing fluoroscopic images to be used for real-time surgical localization and instrument tracking. Existing fluoroscopy-based navigation systems are still limited as far as the virtual representation of true surgical reality is concerned. This article, for the first time, presents a reality-enhanced virtual fluoroscopy with radiation-free updates of in situ surgical fluoroscopic images to control metaphyseal fracture reduction. A virtual fluoroscopy is created using the projection properties of the fluoroscope; it allows the display of detailed three-dimensional (3D) geometric models of surgical tools and implants superimposed on the X-ray images. Starting from multiple registered fluoroscopy images, a virtual 3D cylinder model for each principal bone fragment is constructed. This spatial cylinder model not only supplies a 3D image of the fracture, but also allows effective fragment projection recovery from the fluoroscopic images and enables radiation-free updates of in situ surgical fluoroscopic images by non-linear interpolation and warping algorithms. Initial clinical experience was gained during four tibia fracture fixations that were treated by LISS (Less Invasive Stabilization System) osteosynthesis. In the cases operated on, after primary image acquisition, the image intensifier was replaced by the virtual reality system. In all cases, the procedure including fracture reduction and LISS osteosynthesis was performed entirely in virtual reality. A significant disadvantage was the unfamiliar operation of this prototype software and the need for an additional operator for the navigation system.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB [discontinued]
UniBE Contributor:	Langlotz, Frank, Zheng, Guoyan, Nolte, Lutz-Peter
Subjects:	500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health
ISSN:	1092-9088
Publisher:	Taylor & Francis
Language:	English
Submitter:	Guoyan Zheng
Date Deposited:	26 Jul 2017 14:43
Last Modified:	05 Dec 2022 14:56
Publisher DOI:	10.3109/10929080500229660
PubMed ID:	16321911
URI:	https://boris.unibe.ch/id/eprint/82198