PHBHHx has excellent biocompatibility with a variety of cell types, including smooth muscle cells , fibroblasts
, articular cartilage-derived chondrocytes , osteoblasts, and bone marrow cells . Additionally,PHBHHx possesses a low degree of crystallinity (2).Polyhydoxyalkanoates are generally biodegradable and thermoprocessable and thus have been widely used in both conventional medical devices and tissue engineering.Because of its good biocompatibility