Porous polyethylene sheet implant with a barrier surface: a rabbit study.
Soft tissue adhesion to the porous polyethylene sheet implant (PPSI) raises the concern of postoperative extraocular motility disturbance after orbital blowout fracture repairs using PPSI. A PPSI with a barrier surface (PPSI-B) has been developed to reduce adhesion between soft tissue and the implant. Six PPSI-B and six conventional PPSI were implanted under the scalps of three New Zealand white rabbits. The implants were harvested at 2-, 4-, and 20-week intervals. Clinical and histologic comparisons were made between PPSI-B and PPSI with regard to adhesion at the soft tissue-implant interface. Clinically, PPSI-B demonstrated less adhesion between soft tissue and implant compared with the conventional PPSI. Both types of implants demonstrated a complete fibrovascular ingrowth by 2 weeks. Because PPSI-B causes less adhesion at the soft tissue-implant interface, consideration should be given to the use of PPSI-B in repairs of orbital blowout fractures in which extraocular muscle is exposed to the implant surface.
Choi
J C
JC
Brigham and Women's Hospital, Boston, Massachusetts, USA.
Bstandig
S
S
Iwamoto
M A
MA
Rubin
P A
PA
Shore
J W
JW
D000818:Animals; D005260:Female; D005500:Follow-Up Studies; D016348:Osseointegration; D011095:Polyethylenes; D016062:Porosity; D011183:Postoperative Complications / Q000473:pathology / Q000517:prevention & control; D019736:Prostheses and Implants; D019919:Prosthesis Implantation; D011817:Rabbits; D012535:Scalp / Q000601:surgery; D000267:Tissue Adhesions / Q000473:pathology* / Q000517:prevention & control
D011095:Polyethylenes