Cytotoxicity of poly-lactic-acid internal fixation composing bone powder was examined by MTT colorimetry and cell morphology test in vitro.

• 应用四唑盐比色法检测骨粉/聚乳酸内固定材料浸提液的细胞毒性,光学显微镜观察细胞在浸提液中的形态变化;