Autologous pericranium grafts for large orbital implants

Autologous Pericranium Graft for Necrotizing Scleritis

PURPOSE

The purpose of this study was to describe the clinical outcome of scleral staphyloma secondary to necrotizing scleritis treated with autologous pericranial grafting.

CASE REPORT

A 63-year-old woman with necrotizing scleritis and choroidal protrusion underwent homologous scleral grafting, which failed. The patient's medical management was optimized for control of her systemic inflammation, and she underwent a second surgery consisting of autologous pericranium grafted to the parietal region. A 3- × 2-cm tissue patch was harvested and sutured over the staphyloma borders with 8/0 polyglactin sutures. Complete re-epithelialization was observed at 3 weeks, the graft was well integrated, and no signs of inflammation were observed at 18 months.

CONCLUSIONS

The pericranium offers a viable alternative for scleral thinning because of necrotizing scleritis.

Copper-Doped Bioactive Glass/Poly (Ether-Ether-Ketone) Composite as an Orbital Enucleation Implant in a Rabbit Model: An In Vivo Study

An orbital enucleation implant is used to compensate for the orbital volume deficits in the absence of the globe. In this work, copper-doped bioactive glass in poly(ether-ether-ketone) (CuBG/PEEK) composite scaffolds as an orbital enucleation implant were designed and fabricated by cool-pressed sintering and particle-leaching techniques, the incorporation of copper-doped bioactive glass in poly(ether-ether-ketone) (CuBG/PEEK) was expected to significantly improve the biocompatibility of the PEEK implant. The consequences after implantation of the CuBG/PEEK composite scaffolds in experimental, eviscerated rabbits was observed and assayed in term of histopathological examination. In detail, 24 rabbits were randomly divided into three groups: Group A, PEEK scaffolds; Group B, 20% CuBG/PEEK composite scaffolds; Group C, 40% CuBG/PEEK composite scaffolds; the rabbits were sacrificed at week 4 and week 12, followed by histochemical staining and observation. As a result, the PEEK group exhibited poor material exposure and tissue healing, while the CuBG/PEEK scaffolds showed good biocompatibility, and the 40% CuBG/PEEK composite scaffold exhibited the best performance in angiogenesis and tissue repair. Therefore, this study demonstrates the potential of CuBG/PEEK composite scaffolds as an orbital enucleation implant.