Fig. 11From: Evaluating the bioactivity of a hydroxyapatite-incorporated polyetheretherketone biocompositeHistological observation after 8 weeks of implantation: a UHMWPE, b PEEK, c HA/PEEK, d quantitative analysis of bone/implant contact ratio. The black asterisks indicate the fibrous connective tissue, and the white arrows indicate the bone contactBack to article page