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Computer‐assisted distraction osteogenesis by Ilizarov's method
Author(s) -
Simpson A. L.,
Ma B.,
Slagel B.,
Borschneck D. P.,
Ellis R. E.
Publication year - 2008
Publication title -
the international journal of medical robotics and computer assisted surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 53
eISSN - 1478-596X
pISSN - 1478-5951
DOI - 10.1002/rcs.211
Subject(s) - distraction osteogenesis , computer science , imaging phantom , radiography , ilizarov technique , orthodontics , fixation (population genetics) , frame (networking) , external fixator , distraction , deformity , medicine , nuclear medicine , surgery , telecommunications , population , environmental health , neuroscience , biology
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. Conclusions Our method achieved high accuracy and precision in a laboratory setting, and produced acceptable outcomes in a pilot clinical study. Copyright © 2008 John Wiley & Sons, Ltd.