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Exposed hydroxyapatite orbital implants. Report of six cases
R A Goldberg1, J B Holds, J Ebrahimpour
1Jules Stein Eye Institute, UCLA School of Medicine 90024-7006.
Ophthalmology
|May 1, 1992
Summary
Hydroxyapatite orbital implants can expose early, causing complications like infection. However, chronic exposure may be tolerated without implant loss, though coverage can be challenging.
Area of Science:
- Ophthalmology
- Biomaterials Science
Background:
- Hydroxyapatite implants are used for orbital reconstruction.
- Complications such as socket infection and conjunctival dehiscence can occur post-implantation.
Observation:
- Six patients with hydroxyapatite implant complications were analyzed.
- Implant exposure was noted 4-6 weeks post-surgery.
- Various treatments were attempted, including scleral wraps and grafts.
Findings:
- Two cases achieved successful implant coverage with scleral and conjunctival grafts.
- One Tenon's flap closure was unsuccessful due to implant spicule erosion.
- Three patients had persistent exposed implants that remained stable without migration.
Implications:
- Early exposure of hydroxyapatite implants is a risk despite careful surgical technique.
- Achieving adequate implant coverage can be difficult.
- Chronic exposure may be well-tolerated, suggesting potential for conservative management.