Views: 1,221 | Downloads:
115
| Responses: 0
| XML | Respond to this article | Alert & updates | Request permissions | Email to a friend |
Original ArticleOpen Access
Outcome of porous implants: Incidence of complications, management, and morbidity
Pongprayoon C 
Objective : To determine the incidence of complications and the outcome associated with the use of three kinds
of ocular porous implants.
Material and Method : Retrospective review of 133 consecutive case series. All patients undergoing orbital
implantation either primary or secondary implantation of 49 coral hydroxyapatite, 43 human bone
hydroxyapatite and 39 bovine bone hydroxyapatite from September 1995 to September 2007 were included.
Charts were reviewed for preoperative diagnoses, type and size of implant, use of a wrapping material, and
complications. Patients were followed for signs of inflammation, infection, extrusion, or other complications.
Results : There are more exposures of human bone hydroxyapatite (8.16%) and bovine bone hydroxyapatite
(7.69%) than coralline hydroxyapatite implants (2.22%). Spontaneous healing of exposures occurred in 25%
(2 of 8) of cases. Covering exposures with patch grafts underneath vascularized conjunctival flaps was the
most successful method of surgical repair in 2 cases (25%). Chronic infection of the 2 exposed human bone
hydroxyapatite leading to the removal of the 2 implants (1.5%) . Conjunctival granulomas and late exposure
developed in 2 and 3 patients after peg coupling respectively. There were no cases of implant migration or
prolonged inflammation related to the covering material.
Conclusion : Careful selection of surgical technique, implant type and size may help reduce the risk of severe
complications.
Keywords : Orbital implantation, coral hydroxyapatite, human bone hydroxyapatite, bovine bone hydroxyapatite,
extrusion of hydroxyapatite, exposure of hydroxyapatite, patch grafts, peg coupling
of ocular porous implants.
Material and Method : Retrospective review of 133 consecutive case series. All patients undergoing orbital
implantation either primary or secondary implantation of 49 coral hydroxyapatite, 43 human bone
hydroxyapatite and 39 bovine bone hydroxyapatite from September 1995 to September 2007 were included.
Charts were reviewed for preoperative diagnoses, type and size of implant, use of a wrapping material, and
complications. Patients were followed for signs of inflammation, infection, extrusion, or other complications.
Results : There are more exposures of human bone hydroxyapatite (8.16%) and bovine bone hydroxyapatite
(7.69%) than coralline hydroxyapatite implants (2.22%). Spontaneous healing of exposures occurred in 25%
(2 of 8) of cases. Covering exposures with patch grafts underneath vascularized conjunctival flaps was the
most successful method of surgical repair in 2 cases (25%). Chronic infection of the 2 exposed human bone
hydroxyapatite leading to the removal of the 2 implants (1.5%) . Conjunctival granulomas and late exposure
developed in 2 and 3 patients after peg coupling respectively. There were no cases of implant migration or
prolonged inflammation related to the covering material.
Conclusion : Careful selection of surgical technique, implant type and size may help reduce the risk of severe
complications.
Keywords : Orbital implantation, coral hydroxyapatite, human bone hydroxyapatite, bovine bone hydroxyapatite,
extrusion of hydroxyapatite, exposure of hydroxyapatite, patch grafts, peg coupling
Download:
PDF