THE LONG-TERM FOLLOW-UP OF CALCIUM HYDROXYAPATITE CERAMIC IMPLANTATION FOR THE TREATMENT OF BONE TUMORS

The purpose of this paper is to report the long-term results in patients with more than 10 years follow-up after calcium hydroxyapatite ceramic (CHA) implantation for the treatment of bone tumor surgery. Fifty-five patients were implanted with CHA for bone defects after the intralesional resection of benign bone tumors. The postoperative functional recovery was obtained within first one year in all patients. The radiographic density at the CHA implant sites appeared to increase during first 2 years, thereafter gradually decrease with time. The density at 10 years or more after operation was about one half of the maximum in some patients. No adverse effects and late complications were seen in any patients. These findings suggested strongly that CHA is useful for bone substitute to fill the defects in benign bone tumors.