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六种海胆及四种杂交海胆管足骨片类型和数量
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作者 魏金亮 张伟杰 +1 位作者 韩奋杰 常亚青 《大连海洋大学学报》 CAS CSCD 北大核心 2019年第5期656-661,共6页
为研究不同种类海胆Echinoidea管足内骨片类型和数量,利用光学显微镜对6种海胆(中间球海胆Strongylocentrotus intermedius、紫海胆Anthocidaris crassispina、光棘球海胆Mosecentrotus nudus、海刺猬Glyptocidaris crenularis、高腰海... 为研究不同种类海胆Echinoidea管足内骨片类型和数量,利用光学显微镜对6种海胆(中间球海胆Strongylocentrotus intermedius、紫海胆Anthocidaris crassispina、光棘球海胆Mosecentrotus nudus、海刺猬Glyptocidaris crenularis、高腰海胆Mespilia globulus、马粪海胆Hemicentrotus pulcherrimus)及4种杂交海胆(中间球海胆♀×紫海胆♂S.intermedius♀×A.crassipine♂、中间球海胆♀×马粪海胆♂S.intermedius♀×H.pulcherrimus♂、中间球海胆♂×马粪海胆♀S.intermedius♂×H.pulcherrimus♀、中间球海胆♀×光棘球海胆♂S.intermedius♀×A.crassipine♂)管足的骨片进行了观察统计并分析。结果表明:10种海胆共有C形体、S形体、杆状体、三叉形体、海马状体5种骨片类型,且不同种海胆骨片类型和数量存在显著性差异;杂交海胆未产生新的骨片类型,拥有双亲的部分骨片类型,在骨片数量上倾向于双亲的平均值。研究表明,利用海胆管足内骨片类型和数量可完全区分出这10种海胆,本研究结果可为海胆分类提供理论依据,也可为杂交种的鉴定提供参考。 展开更多
关键词 海胆 管足 骨片类型 数量
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Lateral cortex blowout during PFNA blade insertion in a subtrochanteric fracture - Should bone quality determine the type of nail used? 被引量:6
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作者 Sunil Gurpur Kini Lai Choon Hin Jikku Haniball 《Chinese Journal of Traumatology》 CAS CSCD 2015年第2期116-119,共4页
Subtrochanteric fractures pose a therapeutic challenge to the surgeons. With the advent of proximal femoral nails, most of the cases are treated with nailing. Newer nails like proximal femoral nail antirotation (PFNA... Subtrochanteric fractures pose a therapeutic challenge to the surgeons. With the advent of proximal femoral nails, most of the cases are treated with nailing. Newer nails like proximal femoral nail antirotation (PFNA) require the blade to be directly hammered into the bone compared to older nails where the screws are drilled and tapped before insertion. We report one such case in a middle aged female that had intraoperative lateral cortex blowout during PFNA blade insertion in a sclerotic bone. This occurrence to the best of our knowledge is unreported in literature. It is therefore imperative to consider the quality of bone before a decision is made on the implant chosen. 展开更多
关键词 Subtrochanteric fractures Proximal femoral nail antirotation Sclerotic bone
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