Internal Fixation of Medpor® Implant for Prevention of Enophthalmos in Posteriorly Extended Orbital Floor Fracture

후방까지 연장된 안와하벽골절에서 안구함몰 예방을 위한 Medpor® 내고정술

  • Suhk, Jeong Hoon (Department of Plastic and Reconstructive Surgery, DongKang General Hospital) ;
  • Ji, So Young (Department of Plastic and Reconstructive Surgery, DongKang General Hospital) ;
  • Kim, Tae Bum (Department of Plastic and Reconstructive Surgery, DongKang General Hospital) ;
  • Yang, Wan Suk (Department of Plastic and Reconstructive Surgery, DongKang General Hospital)
  • Received : 2008.07.31
  • Accepted : 2008.09.19
  • Published : 2008.11.10

Abstract

Purpose: The purpose of this study is to evaluate the effectiveness of internal fixation method of $Medpor^{(R)}$ implant with $BioSorb^{TM}FX$ screw which is used for prevention of enophthalmos in posteriorly extended large orbital floor fracture. Methods: From Jun. 1997 to Dec. 2007, 21 patients who were diagnosed with posteriorly extended large orbital floor fractures were classified into two groups. One group(n=11) had undergone reduction surgery with regular $Medpor^{(R)}$ sheets without any fixation method, while the other group(n=10) had their $Medpor^{(R)}$ sheets fixed with the $BioSorb^{TM}FX$ screws. The two groups were evaluated by comparison of their enophthalmos degree and effectiveness. Results: In the non-fixation group, six patients had enophthalmos preoperatively and three of them showed persistent enophthalmos postoperatively. In postoperative CT examination, displacement of $Medpor^{(R)}$ implant with soft tissue impaction into maxillary sinus was observed in the patients. In the screw fixation group, three patients had enophthalmos preoperatively, but none of them suffer from complication such as residual enophthalmos, soft tissue impaction, muscle entrapment or optic nerve compression postoperatively. Conclusion: Internal fixation method of $Medpor^{(R)}$ implant with $BioSorb^{TM}FX$ screw on the medial surface of orbital floor provides firm stabilization of implants and surrounding soft tissues and can be an effective option especially when postoperative implant displacement or malposition was expected.

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