Osseointegrated implants for orbito-facial prostheses: Preoperative planning tips and intraoperative pearls.

PURPOSE: Implant-retained facial prostheses are becoming increasingly sophisticated. We describe our experience with successful implant placement. METHODS: Retrospective case series. Patients with severe unilateral orbital deformity who underwent socket reconstruction with placement of orbital implants were identified. Data on patient age, gender, mechanism of eye, soft tissue, and bone loss, prior reconstructive surgeries and radiation, and orbital imaging were collected and analyzed. RESULTS: Four patients (9 implants) between 2010 and 2014, who had osseointegrated implants placed for orbito-facial prostheses were identified. Three were male, one female. Average age was 59 years (range 34-86). Reason for eye loss was trauma in two patients, exenteration for recurrent rhabdomyosarcoma in one patient, and enucleation for retinoblastoma in one patient. All patients had Vistafix® (Gothenburg, Sweden) osseointegrated titanium implants (4 mm) placed in a 2-stage procedure over a span of 3-6 months with subsequent successful prosthesis fitting. CONCLUSION: Implant-retained orbito-facial prostheses are safe, easy, and reliable. The ideal socket has minimal dead space, robust bone, and soft tissue 4-5 mm in depth. Preoperative planning should consist of: 1) orbit CT; 2) careful clinical exam of the orbital deformity; and, 3) analysis of socket topography. Operative tips for successful implant placement include: 1) 2-3 points of fixation; 2) placement of implants in bone of adequate thickness; and 3) implant placement as a 2-stage rather than 1-stage procedure. There appears to be no difference in outcome in irradiated and non-irradiated sockets in this series, but should be a consideration and discussed with the patient.