J Korean Ophthalmol Soc.  2007 Nov;48(11):1554-1561.

The Effect of 4 Rectus Muscle Anterior Displacement in Porous Polyethylene Orbital Implant Exposure

• Jeung WJ
• Shin DM
• Ahn HB

Abstract

PURPOSE: To investigate the effects of anterior displacement of four rectus muscles in exposure of porous polyethylene orbital implant (Medpor(R)).
CASE SUMMARY
This retrospective study reviewed 4 eyes with exposed orbital implant who underwent evisceration with porous polyethylene orbital implant (Medpor(R)). The technique involves dissection of conjunctiva and tenon's capsule and isolation of four rectus muscles from sclera. Unsure if each muscle was sutured to each other or if a group of muscles were sutured to another group (i.e. superior and inferior to medial and lateral). Posterior tenon's capsule was closed interruptedly and conjunctiva was closed continuously. Orbital implant exposure was occurred at 2~36 months later after evisceration and implant insertion. One eye was noted wound dehiscence 1 week after operation, then re-suture was done. Re-exposure was notified in 1 eye at postoperative 3 months, but it was small, then we just observed. In other 3 cases, exposure was not identified till last follow up.
CONCLUSIONS
Four rectus muscle anterior displacement procedure may be simple and useful method in exposure of orbital implant.

Keyword

Four rectus muscle anterior displacement procedure; Orbital implant exposure

MeSH Terms

Conjunctiva
Follow-Up Studies
Muscles
Orbit*
Orbital Implants*
Polyethylene*
Retrospective Studies
Sclera
Tenon Capsule
Wounds and Injuries
Polyethylene