High density porous polyethylene (HDPP) has been used extensively for craniofacial reconstructive procedures. The authors recently reviewed the records of 21 patients who had undergone correction of late (more than 6 months) posttraumatic enophthalmos utilizing HDPP implants to restore orbital integrity and volume. Follow-up after implant placement was 6 months to 54 months (mean 20 months). Twenty of 21 patients demonstrated a clinically significant reduction in enophthalmos to within 2 mm of the opposite globe, as demonstrated by Hertel and/or Naugle exophthalmometry and by clinical observation. There were no cases of worsened visual acuity, lid position or ocular mobility, and no HDPP implant became infected or was extruded. The authors' experience supports the safety and efficacy of HDPP implants for correction of mild to moderate posttraumatic enophthalmos.
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