以下为句子列表：
英文: After removal of the crest, considerable cancellous bone may be obtained by inserting a curet into the cancellous space between the two intact cortices.
中文: 在切除髂嵴后，可用刮匙插入髂骨内、外侧皮质骨板间的松质骨间隙中大量刮取松质骨。
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英文: Although cancellous bone is more osteogenic, it is not strong enough to provide efficient structural support.
中文: 虽然松质骨的骨形成作用更强，但却没有足够的强度提供有效的结构性支撑。
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英文: Cortical bone grafts are used primarily for structural support, and cancellous bone grafts for osteogenesis.
中文: 皮质骨移植主要用于结构性支撑，松质骨移植用于成骨。
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英文: The advantages of dual grafts for bridging defects are as follows: (1) mechanical fixation is better than fixation by a single onlay bone graft; (2) the two grafts add strength and stability; (3) the grafts form a trough into which cancellous bone may be
中文: 双侧植骨桥接骨缺损的优点包括：①机械固定作用比单侧贴附植骨更好；②双侧植骨可增加强度和稳定性；③双侧的植骨可形成一骨槽，可在其中压紧松质骨；④与单侧植骨不同，双侧植骨在愈合过程中可防止挛缩的纤维组织危害移植的松质骨。
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英文: The inner cortical table with underlying cancellous bone may be preferable owing to body habitus.
中文: 出于保持外形的原因，一般习惯切取髂骨内侧骨板和松质骨。
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