Objective:To discuss the effect of different hydroxyapatite orbital implantation and the prevention and cure of its complications.Methods:96 cases treated with different methods of hydroxyapatite orbital implantation were reviewed.26 cases were placed directly into the sclera shell(type①)

41 cases were unwrapped in sclera(type②)

and 29 cases wrapped in autologous or homologous sclera were placed into the orbit(type③).The patients were observed through following up for 3 to 72 months.Results:The effect of the above three surgical types was satisfying.The orbit was full.And the orbital movement was smooth.The main complications included the conjunctiva dehiscence and exposure of the orbit.The incidence of the orbit exposure of type ① was obviously higher than types ② and ③(P<0.05).And the difference in the incidence of the conjunctiva dehiscence had no significance(P>0.05).Conclusion:The direct hydroxyapatite orbital implantation is a simple surgical type.Its clinical effect is very good.It has few complications.And it does not need the autologous or homologous material.Therefore

its advantage is obvious.