结论：由于固定3层或4层骨皮质无差别，可以由手术医生决定固定骨皮质的数目。
Conclusions: Because no difference was seen between 3 or 4 cortices, it is the surgeon's choice in determining how many cortices of fixation are achieved.
目的研究大段同种异体皮质骨移植过程中哈佛系统的成骨作用，探讨大段同种异体皮质骨愈合活化表面的临床意义。
Objective To study inductive osteogenesis of Haversian system and evaluate the clinical significance of the vitalization surface in the healing process of the massive cortical allografts.
远侧骨皮质较近侧骨皮质更易发生骨折（P<0.05）。
The fracture occurred more frequently on distal cortex than on proximal cortex(P< 0.05).
线平片、CT表现侧重于反映骨皮质破坏的形态，而MRI更能反映骨皮质破坏的病理学基础。
X-ray plain films and ct mainly demonstrated the morphology of the destruction, while MRI reflected the pathology of it.
结果发现隐性骨折病灶110处，根据损伤累及的范围和程度，隐性骨折分为隐性皮质下骨折、隐性骨皮质骨折和隐性骨软骨骨折三型；
Results 110 lesions were found and were divided into 3 types: occult subcortical fracture, occult cortical fracture and occult osteochondral fracture according to the range and degree of injuries.
当部分骨皮质碎片位于囊肿之内时，便称为骨皮质塌陷征。
When a piece of cortical bone lies within the cyst in its dependent portion, this is know as the fallen fragment sign.
当部分骨皮质碎片位于囊肿之内时，便称为骨皮质塌陷征。
When a piece of cortical bone lies within the cyst in its dependent portion, this is know as the fallen fragment sign.
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