 This study investigates the effectiveness of a 3D printed degradable polymeric implant with cellular structure for the treatment of segmental bone defects. The implant was coated with hydroxyapatite and inserted into a sheep tibia. After one week, it was found that the implant had been completely filled with newly formed bone tissue. By the third week, the bone tissue had grown from both the proximal and distal fragments of the defect. These results suggest that the implant may be effective for the treatment of segmental bone defects.