Bone and Joint Institute

Title

Automatic and accurate reconstruction of distal humerus contours through B-Spline fitting based on control polygon deformation

Document Type

Article

Publication Date

1-1-2014

Journal

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

Volume

228

Issue

12

First Page

1241

Last Page

1257

URL with Digital Object Identifier

10.1177/0954411914562267

Abstract

© IMechE 2014. The strong advent of computer-assisted technologies experienced by the modern orthopedic surgery prompts for the expansion of computationally efficient techniques to be built on the broad base of computer-aided engineering tools that are readily available. However, one of the common challenges faced during the current developmental phase continues to remain the lack of reliable frameworks to allow a fast and precise conversion of the anatomical information acquired through computer tomography to a format that is acceptable to computer-aided engineering software. To address this, this study proposes an integrated and automatic framework capable to extract and then postprocess the original imaging data to a common planar and closed B-Spline representation. The core of the developed platform relies on the approximation of the discrete computer tomography data by means of an original two-step B-Spline fitting technique based on successive deformations of the control polygon. In addition to its rapidity and robustness, the developed fitting technique was validated to produce accurate representations that do not deviate by more than 0.2-mm with respect to alternate representations of the bone geometry that were obtained through different - contact-based - data acquisition or data processing methods.

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