Late exposure of the bioceramic orbital implant.
OBJECTIVE
To investigate the long-term outcome of the Bioceramic orbital implant.


METHODS
A retrospective, comparative, nonrandomized study.


METHODS
Data were collected from the patients receiving Bioceramic orbital implants at National Taiwan University Hospital between June 1, 2001 and November 1, 2005. The implant was wrapped with Vicryl mesh, adding anteriorly with a scleral patch graft following enucleation with primary or secondary implantation. The unwrapped implant was inserted into an eviscerated globe with posterior sclerotomy and cornea preserved. Primary or secondary placement of sleeve was performed in some patients.


RESULTS
A total of 112 cases were reviewed. Four patients were excluded attributable to insufficient follow-up. The other 108 patients had a mean follow-up period of 35.8 +/- 10.6 months (range, 24 to 70 months). Fifty patients (46.3%) received the pegging procedure. Eight of 108 (7.4%) cases of late exposure were identified on average 20.7 months after implantation. We identified no cases of implant exposure in 30 cases of enucleation and eight cases of secondary implant when the implant was wrapped in Vicryl mesh and an anterior scleral cap was used. All exposures developed in eviscerated patients (70 cases): two without pegging, three with primary placement, and three with secondary placement of the sleeve. The exposure rate was higher in patients with eviscerated globes, pegged implants, and prior ocular operations (P < .005).


CONCLUSIONS
Late exposures of Bioceramic implants were found after long-term follow-up, associated with evisceration, pegging, and prior ocular surgeries. The modified wrapping technique can prevent exposure following secondary implantation and enucleation.
Department of Ophthalmology, Far Eastern Memorial Hospital, Taipei, Taiwan.
Jia-Kang
JK
Wang
Pei-Ching
PC
Lai
Shu Lang
SL
Liao
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000537:Aluminum Oxide; D001672:Biocompatible Materials; D002516:Ceramics; D002648:Child; D002675:Child, Preschool; D015353:Eye Enucleation; D017234:Eye Evisceration; D005137:Eye, Artificial; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008422:Materials Testing; D008875:Middle Aged; D009915:Orbit / Q000601:surgery*; D020273:Orbital Implants; D011183:Postoperative Complications; D019919:Prosthesis Implantation; D012189:Retrospective Studies; D013529:Surgical Wound Dehiscence / Q000209:etiology*; D055815:Young Adult
D001672:Biocompatible Materials; C050798:cerestore; D000537:Aluminum Oxide