The hydroxyapatite orbital implant: a prospective study

Area of Science:

• Ophthalmology
• Biomaterials Science
• Surgical Innovation

Background:

• The hydroxyapatite orbital implant, introduced in 1989, has demonstrated good tolerance and low complication rates as a primary implant.
• Previous findings suggest favorable outcomes regarding artificial eye motility and implant integration.

Purpose of the Study:

• To prospectively evaluate the clinical outcomes of hydroxyapatite orbital implants used as both primary and secondary implants.
• To assess the implant's performance concerning motility, cosmesis, and complication rates in a diverse patient cohort.

Main Methods:

• A prospective study involving 60 patients implanted between October 1992 and November 1994.
• Patients received either primary (n=28) or secondary (n=32) hydroxyapatite orbital implants, with 7 undergoing subsequent drilling and pegging.
• Standardized operative and post-operative protocols were followed, with evaluations including enophthalmos, lid sulcus deformity, prosthesis motility, implant position, socket status, and cosmesis.

Main Results:

• The hydroxyapatite orbital implant demonstrated excellent artificial eye motility and good cosmetic results.
• A low rate of complications was observed for both primary and secondary implant placements.
• Patient and surgeon subjective assessments indicated high satisfaction with the overall aesthetic and functional outcomes.

Conclusions:

• Hydroxyapatite orbital implants are effective and well-tolerated for both primary and secondary orbital reconstruction.
• The implant provides superior motility and cosmesis with minimal complications, enhancing patient satisfaction.
• This study supports the continued use of hydroxyapatite implants in orbital socket reconstruction.