Abstract：
:Recently, surgeons have begun to treat serious congenital craniofacial deformities including craniosynostoses with mechanical devices that gradually distract the skull. As a prospective means of treatment planning for such complex deformities, FE models derived from routine preoperative CT scans (CT/FEA) would provide ideal patient specific engineering analyses. The purpose of this study was to assess the dimensional and predictive accuracy of the CT/FEA process through the development of a 3D model of a dry human calvarium subjected to two-point distraction ex vivo. Comparative skull measurements revealed that CT/FEA construction error did not exceed 1% for transcranial dimensions, and the thickness error did not exceed 8.66% or 0.31 mm. CT/FEA strain predictions for the central region of the skull, between the distraction posts, were not statistically different from homologous gage values at P < 0.05. Peripherally, however, the strain fields were less well behaved and the FE predictions showed only general qualitative agreement with gage recordings.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
Remmler D,Olson L,Ekstrom R,Duke D,Matamoros A,Matthews D,Ullrich CGdoi
10.1016/s1350-4533(98)00053-8subject
Has Abstractpub_date
1998-11-01 00:00:00pages
607-19issue
8eissn
1350-4533issn
1873-4030pii
S1350453398000538journal_volume
20pub_type
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