Methods Male SD rats were used to make contusion healing model and were sacrificed in different time specimens possessed for histological and ultrastructural observation and grade.

• 方法将雄性SD大鼠排肠肌钝挫伤后随机分为模型组、三色膏组和扶他林组，于用药后不同时期处死取材，分别进行组织学和超微结构观察，并进行组织学观察评分。