primary placement of titanium peg on hydroxyapatite orbital implant

purpose: to determine the efficacy of primary placement of a titanium sleeve and peg on hydroxyapatite (ha) orbital implants. methods: this retrospective non-comparative interventional case series was performed on 34 patients undergoing enucleation. a standard enucleation technique with primary ha implantation was performed, in which titanium sleeve and peg were placed primarily during the initial surgery. the patients were visited one, three and six months after placement of the prosthesis for evaluating complications and prosthesis movement. results: twelve patients (35.3%) had one or more complications including discharge (26.4%), peg drilled off center (23.5%), conjunctival overgrowth (11.8%), implant and peg exposure (each in 8.8%), sleeve extrusion, conjunctival thinning, peg on an angle and conjunctival cyst (each in 5.9%) and sleeve obstruction (2.9%). movement of the prosthesis (2-3+) was achieved in 97% of the cases in supraduction, infraduction, abduction and adduction. conclusion: primary peg placement at the time of enucleation with the ha implant is a promising technique with relatively minor complications.