Custom cranioplasty using stereolithography and acrylic
| Autor: | Michael Redmond, Earwaker Wj, Robert G. Thompson, Tomlinson Fh, T.M. Barker, David J. Effeney, Paul S. D'Urso |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Rapid prototyping
medicine.medical_specialty medicine.diagnostic_test business.industry medicine.medical_treatment Skull Cosmesis Computed tomography Methylmethacrylate Plastic Surgery Procedures Cranioplasty law.invention Surgery Otorhinolaryngology law Image Processing Computer-Assisted Operating time Humans Medicine Implant Tomography X-Ray Computed business Stereolithography Biomedical engineering |
| Zdroj: | British Journal of Plastic Surgery. 53:200-204 |
| ISSN: | 0007-1226 |
| DOI: | 10.1054/bjps.1999.3268 |
| Popis: | Summary Numerous methods of cranioplasty have been described. Customisation and prefabrication have been reported to reduce operating time and improve cosmesis. An original technique for the manufacture of customised cranioplastic implants has been developed and tested in 30 patients. Thirty patients requiring cranioplasties were selected. Data acquired from computed tomography (CT) were used to manufacture exact plastic replicas (biomodels) of craniotomy defects and master cranioplastic implants using the rapid prototyping technology of stereolithography (SL). The three-dimensional (3D) imaging techniques of mirroring and interpolation were used to extrapolate on existing anatomy to design the master implants. The master implants were hand finished to fit the defect in the corresponding cranial biomodel exactly and were then used to create a cavity mould. The mould was used to cast thermally polymerised custom acrylic implants. The surgeons reported that the customised implants reduced operating time, afforded excellent cosmesis and were cost effective. The patients reported that the opportunity to see the biomodel and implant preoperatively improved their understanding of the procedure. Two complications were noted, one infection and one implant required significant trimming. The simultaneous manufacture of the master implant (male) and biomodel (female) components from SL allowed custom accurate implants to be manufactured. Disadvantages identified were the time required for computer manipulations of the CT data (up to 2 h), difficulty in assessing the accuracy of the computer generated master as a 3D rendering, the potential for SL parts to warp, manufacturing time (minimum 2 days) and the cost of approximately $1300 US per case ($1000 for the SL biomodel and $300 for the acrylic casting). |
| Databáze: | OpenAIRE |
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