✦ LIBER ✦

Computer-assisted distraction osteogenesis by Ilizarov's method

✍ Scribed by A. L. Simpson; B. Ma; B. Slagel; D. P. Borschneck; R. E. Ellis

Book ID: 104583224
Publisher: Wiley (Robotic Publications)
Year: 2008
Tongue: English
Weight: 371 KB
Volume: 4
Category: Article
ISSN: 1478-5951
DOI: 10.1002/rcs.211

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✦ Synopsis

Abstract

Background

The Taylor spatial frame is a fixation device used to implement the Ilizarov method of bone deformity correction to gradually distract an osteotomized bone at regular intervals, according to a prescribed schedule.

Methods

We modify conventional technique by: (a) preoperatively planning a virtual three‐dimensional (3D) correction; (b) basing the correction on the actual location of the frame with respect to the anatomy, immediately compensating for frame mounting errors; and (c) calculating the correction based on 3D CT data rather than measurements from radiographs. We have performed a laboratory study using plastic phantoms, and a pilot clinical study involving five patients.

Results

In 20 tibial phantom experiments, we achieved average correction errors of < 2° total rotation and < 0.5 mm total lengthening. We observed clinically acceptable corrections with no complications in our pilot clinical study.