Figure 1
From: In vivo evaluation of porous nanohydroxyapatite/polyamide 66 struts in a goat cervical fusion model

Implants tested in the study. (A) The dense nanohydroxyapatite/polyamide 66 struts (n-HA/PA66) is a hollow cylinder 9 mm in outer diameter and 3 mm in inner diameter, with several 0.5-mm holes and slots around the outside. (B) The porous n-HA/PA66 strut is 9 mm in diameter. The porosity, average pore diameter and HA content were 80%, 300 μm and 40 wt%, respectively. Both were designed and fabricated jointly by the Institute of Materials Science and Technology of Sichuan University and our department.