A new titanium peg system for hydroxyapatite orbital implants

Area of Science:

• Ophthalmology
• Biomaterials Science
• Surgical Technology

Background:

• Orbital implants are crucial for restoring function and aesthetics after enucleation.
• Traditional peg systems have known complication profiles.
• Hydroxyapatite (HA)-coated implants offer potential for improved osseointegration and biocompatibility.

Purpose of the Study:

• To evaluate the safety and efficacy of a novel hydroxyapatite-coated titanium sleeve and titanium peg system for orbital implants.
• To analyze the complication rates associated with this new HA-coated titanium peg system.

Main Methods:

• A prospective study followed 57 patients who received the HA-coated titanium sleeve and peg system.
• Data collected included surgical details, implant size, HA type, pegging time, follow-up duration, and encountered complications.
• Complications were systematically recorded and analyzed over an average follow-up of 15 months.

Main Results:

• The HA-coated titanium system was implanted in 57 patients with a mean follow-up of 15 months.
• Common complications included discharge (9.2%), pyogenic granulomas (14.8%), and peg extrusion (9.2%).
• Less frequent complications involved movement transfer issues, clicking, conjunctival overgrowth, and visible components.

Conclusions:

• The HA-coated titanium sleeve and titanium peg system is a viable option for HA orbital implants.
• Complication rates for discharge and pyogenic granulomas may be lower compared to traditional polycarbonate pegs.
• The new system was generally well-tolerated, with reports of quieter socket function.