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Biological Compatibility Profile on Biomaterials for Bone Regeneration
Published on: November 16, 2018
Management of tissue breakdown and exposure associated with orbital hydroxyapatite implants
F S el-Shahed1, M M Sherif, A T Ali
1Department of Ophthalmology, Zagazig University, Egypt.
Ophthalmic Plastic and Reconstructive Surgery
|June 1, 1995
Summary
A novel surgical technique utilizes a pedicled conjunctival flap to manage exposed orbital hydroxyapatite implants following evisceration. This method effectively covers large conjunctival defects, promoting implant site healing.
Area of Science:
- Ophthalmology
- Biomaterials Science
- Surgical Innovation
Background:
- Orbital implants, such as hydroxyapatite (HA), are used after orbital exenteration or evisceration to maintain orbital volume and support prosthesis.
- Complications like tissue breakdown and implant exposure can occur, necessitating reconstructive surgical interventions.
Observation:
- Tissue breakdown and exposure of a hydroxyapatite implant were observed 3 weeks after placement in a patient who underwent evisceration for an atrophic globe.
- A 3-month period was allowed for potential spontaneous healing of the exposed implant site.
Findings:
- A pedicled conjunctival flap, harvested from the lower eyelid, was successfully employed to reconstruct the defect and cover the exposed orbital hydroxyapatite implant.
- The surgical technique demonstrated efficacy in managing conjunctival defects overlying orbital implants.
Implications:
- This pedicled conjunctival flap technique offers a viable solution for covering exposed orbital implants, particularly in cases of significant tissue loss.
- The approach may improve outcomes and reduce complications associated with orbital implant exposure, enhancing patient quality of life.
