CT-generated porous hydroxyapatite orbital floor prosthesis as a prototype bioimplant.
Hydroxyapatite bioceramic was used for the manufacture of an orbital floor prosthesis from spiral CT data acquired transaxially at 1-mm beam collimation, pitch of 1, and 0.2-mm reconstruction intervals. CT data were converted to vector file format for subsequent prosthesis manufacture on a stereo-lithography machine. The orbital floor prosthesis was engrafted onto an acrylic model of the orbit as a qualitative indication of its overall accuracy. High anatomic accuracy was achieved, as determined by visual inspection. Cross-hatching of the vector file data allowed a porous internal architecture of the prosthesis. Refinements in chemical structure of the hydroxyapatite bioceramic are expected to enhance mechanical properties.
Levy
R A
RA
Department of Radiology, University of Michigan Hospitals, Ann Arbor, USA.
Chu
T M
TM
Halloran
J W
JW
Feinberg
S E
SE
Hollister
S
S
D002648:Child; D017886:Durapatite; D006801:Humans; D007091:Image Processing, Computer-Assisted; D009915:Orbit / Q000473:pathology / Q000601:surgery*; D016348:Osseointegration; D019047:Phantoms, Imaging; D019736:Prostheses and Implants; D011474:Prosthesis Design; D017755:Prosthesis Fitting; D014057:Tomography, X-Ray Computed
D017886:Durapatite