Li D, Liu J, Min Y
Department of Ophthalmology, Beijing Tongren Hospital.
Zhonghua Yan Ke Za Zhi. 1996 May;32(3):179-81.
To search for the effect and safety of coral porous hydroxyapatite (CHA) implanted material in orbital rim reconstruction.
7 cases of orbital rim reconstruction were treated with CHA which is a plate form mass with an interconnected system of canals of approximately 200 microns in size. It has three types: 1.0 cm x 1.5 cm x 5.0 cm, 0.6 cm x 1.5 cm x 5.0 cm and 0.4 cm x 1.5 cm x 5.0 cm. According to the shape of a contralateral healthy orbit, a rubber putty model was made before the operation. An incision was designed at the upper 1/3 of the face for the elimination of wrinkles or a prolonged incision of lower lid bag plastic surgery was made. After the exposure of the defective part of the orbit, a correctly molded CHA tamponade was inserted.
The orbital rim reconstruction in 7 cases with orbital defect was successfully treated with CHA. During a follow-up of 3-12 months (average 6.6 months), there was no extrusion or migration of implant. CONCLUSION CHA is a good material for substitution of bone graft and is much better than autogenous tissue of other artificial materials.
探寻珊瑚多孔羟基磷灰石（CHA）植入材料在眶缘重建中的效果及安全性。
7例眶缘重建患者采用CHA进行治疗，CHA为板状块状物，具有相互连通的约200微米大小的管道系统。它有三种类型：1.0厘米×1.5厘米×5.0厘米、0.6厘米×1.5厘米×5.0厘米和0.4厘米×1.5厘米×5.0厘米。术前根据对侧健康眼眶的形状制作橡皮膏模型。在面部上1/3处设计切口以消除皱纹或延长下睑袋整形手术切口。暴露眼眶缺损部位后，插入塑形正确的CHA填塞物。
7例眼眶缺损患者的眶缘重建采用CHA治疗成功。在3至12个月（平均6.6个月）的随访期间，植入物无挤压或移位。结论CHA是一种良好的骨移植替代材料，比其他人工材料的自体组织要好得多。
