Bone microdamage usually appearing in different type of microcracks in the bone matrix as a result of repetitive mechanical loading and can only be identified by microscopy.

• 摘要骨的显微损伤是由于反复受载所致的仅能在显微镜下观察到的骨基质的损伤，往往表现为各种形态的显微裂纹或弥散性损伤。