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  • Title: Implant and prosthesis movement after enucleation: a randomized controlled trial.
    Author: Shome D, Honavar SG, Raizada K, Raizada D.
    Journal: Ophthalmology; 2010 Aug; 117(8):1638-44. PubMed ID: 20417565.
    Abstract:
    OBJECTIVE: To evaluate implant and prosthesis movement after myoconjunctival enucleation and subsequent polymethyl methacrylate (PMMA) implantation, compared with the traditional enucleation with muscle imbrication using a PMMA implant and with enucleation accompanied by porous polyethylene implantation. DESIGN: Randomized, controlled, observer-masked, interventional study. PARTICIPANTS: One hundred fifty patients, equally and randomly allocated to the 3 groups. INTERVENTION: Group 1 consisted of patients in whom a PMMA implant was used after enucleation with muscle imbrication (traditional PMMA group). Group 2 consisted of patients in whom a PMMA implant was used after enucleation with a myoconjunctival technique (myoconjunctival PMMA group). Group 3 consisted of patients in whom a porous polyethylene implant was used after enucleation by the scleral cap technique (porous polyethylene group). Fifty patients were included in each group. Patients were allocated to 1 of the 3 groups using stratified randomization. Informed consent was obtained. Acrylic prostheses custom made by a trained ocularist were fitted 6 weeks after surgery in all patients. A masked observer measured implant and prosthesis movement 6 weeks after surgery using a slit-lamp device with real-time video and still photographic documentation. Analysis of implant and prosthesis movement was carried out using the Mann-Whitney U test, and a P value of < or =0.03 was considered significant. Complications including implant displacement and exposure also were noted. MAIN OUTCOME MEASURES: Implant and prosthesis movement. RESULTS: Myoconjunctival PMMA implant movement was better than the traditional PMMA implant (P = 0.001), but was similar to that of the porous polyethylene implant. Prosthesis movement with the myoconjunctival PMMA implant was better than that of either the traditional PMMA (P = 0.001) or porous polyethylene (P = 0.002) implants. CONCLUSIONS: Myoconjunctival enucleation technique with a PMMA implant provides statistically and clinically significantly better implant and prosthesis movement than the traditional PMMA implant and better prosthesis movement than the porous polyethylene implant.
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