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A computational/experimental platform for investigating three-dimensional puzzle solving of comminuted articular fractures
Journal article   Peer reviewed

A computational/experimental platform for investigating three-dimensional puzzle solving of comminuted articular fractures

Thaddeus P Thomas, Donald D Anderson, Andrew R Willis, Pengcheng Liu, Matthew C Frank, J. Lawrence Marsh and Thomas D Brown
Computer methods in biomechanics and biomedical engineering, Vol.14(3), pp.263-270
03/01/2011
DOI: 10.1080/10255841003762042
PMCID: PMC3045471
PMID: 20924863

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Abstract

Reconstructing highly comminuted articular fractures poses a difficult surgical challenge, akin to solving a complicated three-dimensional (3D) puzzle. Preoperative planning using computed tomography (CT) is critically important, given the desirability of less invasive surgical approaches. The goal of this work is to advance 3D puzzle-solving methods towards use as a preoperative tool for reconstructing these complex fractures. A methodology for generating typical fragmentation/dispersal patterns was developed. Five identical replicas of human distal tibia anatomy were machined from blocks of high-density polyetherurethane foam (bone fragmentation surrogate), and were fractured using an instrumented drop tower. Pre- and post-fracture geometries were obtained using laser scans and CT. A semi-automatic virtual reconstruction computer program aligned fragment native (non-fracture) surfaces to a pre-fracture template. The tibiae were precisely reconstructed with alignment accuracies ranging from 0.03 to 0.4 mm. This novel technology has the potential to significantly enhance surgical techniques for reconstructing comminuted intra-articular fractures, as illustrated for a representative clinical case.
articular fracture comminution virtual surgical reconstruction preoperative surgical planning

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