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Comparative motility of hydroxyapatite and alloplastic enucleation implants
P L Custer1, K M Trinkaus, J Fornoff
1Washington University Department of Ophthalmology and Visual Sciences, St. Louis, Missouri, USA.
Ophthalmology
|March 18, 1999
Summary
Hydroxyapatite and alloplastic enucleation implants show similar motility. Implant movement in anophthalmic patients may decrease with age, regardless of implant type.
Area of Science:
- Ophthalmology
- Biomaterials Science
Background:
- Enucleation implants are used to replace the eye after removal.
- Hydroxyapatite and alloplastic materials are common choices for enucleation implants.
Purpose of the Study:
- To compare the motility of scleral-covered hydroxyapatite and alloplastic enucleation implants.
Main Methods:
- Retrospective, nonrandomized comparative trial.
- Measured horizontal and vertical excursions of enucleation implants in 76 anophthalmic patients.
Main Results:
- No clinically significant difference in motility between hydroxyapatite and alloplastic implants.
- Implant motility appears to decrease with increasing patient age.
Conclusions:
- Scleral-covered alloplastic and hydroxyapatite enucleation implants exhibit comparable movement.
- While pegged hydroxyapatite implants enhance prosthetic movement, nonpegged hydroxyapatite implants offer no motility advantage over alloplastic implants.