骨質(zhì)量和骨質(zhì)疏松課件

骨質(zhì)量概念的新進展骨質(zhì)量為骨骼能夠?qū)雇饬Χ话l(fā)生骨折的能力,主要包括:◆骨微結(jié)構(gòu)(BoneMicroarchitecture)◆礦化成分(MineralComposition)◆有機基質(zhì)(OrganicMatrix)◆骨轉(zhuǎn)換(BoneTurnover)◆骨微損傷(BoneMicrodamage)骨質(zhì)量概念的新進展1管狀骨的骨質(zhì)疏松特點管狀骨的骨質(zhì)疏松特點2管狀骨骨質(zhì)疏松特點◆內(nèi)徑(r與外徑(R)比值(入)增大T/R◆骨量只與入有關(guān),與外徑(R)和內(nèi)徑(r)的絕對尺寸無關(guān)◆30歲左右正常年輕人下肢骨骨干中部入值接近035管狀骨骨質(zhì)疏松特點3松質(zhì)骨的生物力學(xué)強度◆松質(zhì)骨由許多單個骨小梁互相連接而成網(wǎng)厭結(jié)構(gòu),材料硬度是指單個骨小梁硬度,結(jié)構(gòu)硬度是指網(wǎng)狀結(jié)構(gòu)硬度松質(zhì)骨的生物力學(xué)強度4管狀骨與松質(zhì)骨骨質(zhì)疏松特點◆管狀骨與松質(zhì)骨不僅結(jié)構(gòu)不同,其骨質(zhì)疏松特點也存在差異◆管狀骨骨質(zhì)疏松表現(xiàn)為管壁變薄,骨骼橫截面上內(nèi)徑增大,而松質(zhì)骨則表現(xiàn)為平均骨密度減少管狀骨與松質(zhì)骨骨質(zhì)疏松特點5骨質(zhì)量和骨質(zhì)疏松課件6骨質(zhì)量和骨質(zhì)疏松課件7骨質(zhì)量和骨質(zhì)疏松課件8骨質(zhì)量和骨質(zhì)疏松課件9骨質(zhì)量和骨質(zhì)疏松課件10骨質(zhì)量和骨質(zhì)疏松課件11骨質(zhì)量和骨質(zhì)疏松課件12骨質(zhì)量和骨質(zhì)疏松課件13骨質(zhì)量和骨質(zhì)疏松課件14骨質(zhì)量和骨質(zhì)疏松課件15骨質(zhì)量和骨質(zhì)疏松課件16骨質(zhì)量和骨質(zhì)疏松課件17骨質(zhì)量和骨質(zhì)疏松課件18骨質(zhì)量和骨質(zhì)疏松課件19骨質(zhì)量和骨質(zhì)疏松課件20骨質(zhì)量和骨質(zhì)疏松課件21骨質(zhì)量和骨質(zhì)疏松課件22骨質(zhì)量和骨質(zhì)疏松課件23骨質(zhì)量和骨質(zhì)疏松課件24骨質(zhì)量和骨質(zhì)疏松課件25骨質(zhì)量和骨質(zhì)疏松課件26骨質(zhì)量和骨質(zhì)疏松課件27骨質(zhì)量和骨質(zhì)疏松課件28骨質(zhì)量和骨質(zhì)疏松課件29骨質(zhì)量和骨質(zhì)疏松課件30骨質(zhì)量和骨質(zhì)疏松課件31骨質(zhì)量和骨質(zhì)疏松課件32骨質(zhì)量和骨質(zhì)疏松課件33骨質(zhì)量和骨質(zhì)疏松課件34骨質(zhì)量和骨質(zhì)疏松課件35骨質(zhì)量概念的新進展骨質(zhì)量為骨骼能夠?qū)雇饬Χ话l(fā)生骨折的能力,主要包括:◆骨微結(jié)構(gòu)(BoneMicroarchitecture)◆礦化成分(MineralComposition)◆有機基質(zhì)(OrganicMatrix)◆骨轉(zhuǎn)換(BoneTurnover)◆骨微損傷(BoneMicrodamage)骨質(zhì)量概念的新進展36管狀骨的骨質(zhì)疏松特點管狀骨的骨質(zhì)疏松特點37管狀骨骨質(zhì)疏松特點◆內(nèi)徑(r與外徑(R)比值(入)增大T/R◆骨量只與入有關(guān),與外徑(R)和內(nèi)徑(r)的絕對尺寸無關(guān)◆30歲左右正常年輕人下肢骨骨干中部入值接近035管狀骨骨質(zhì)疏松特點38松質(zhì)骨的生物力學(xué)強度◆松質(zhì)骨由許多單個骨小梁互相連接而成網(wǎng)厭結(jié)構(gòu),材料硬度是指單個骨小梁硬度,結(jié)構(gòu)硬度是指網(wǎng)狀結(jié)構(gòu)硬度松質(zhì)骨的生物力學(xué)強度39管狀骨與松質(zhì)骨骨質(zhì)疏松特點◆管狀骨與松質(zhì)骨不僅結(jié)構(gòu)不同,其骨質(zhì)疏松特點也存在差異◆管狀骨骨質(zhì)疏松表現(xiàn)為管壁變薄,骨骼橫截面上內(nèi)徑增大,而松質(zhì)骨則表現(xiàn)為平均骨密度減少管狀骨與松質(zhì)骨骨質(zhì)疏松特點40骨質(zhì)量和骨質(zhì)疏松課件41骨質(zhì)量和骨質(zhì)疏松課件42骨質(zhì)量和骨質(zhì)疏松課件43骨質(zhì)量和骨質(zhì)疏松課件44骨質(zhì)量和骨質(zhì)疏松課件45骨質(zhì)量和骨質(zhì)疏松課件46骨質(zhì)量和骨質(zhì)疏松課件47骨質(zhì)量和骨質(zhì)疏松課件48骨質(zhì)量和骨質(zhì)疏松課件49骨質(zhì)量和骨質(zhì)疏松課件50骨質(zhì)量和骨質(zhì)疏松課件51骨質(zhì)量和骨質(zhì)疏松課件52骨質(zhì)量和骨質(zhì)疏松課件53骨質(zhì)量和骨質(zhì)疏松課件54骨質(zhì)量和骨質(zhì)疏松課件55骨質(zhì)量和骨質(zhì)疏松課件56骨質(zhì)量和骨質(zhì)疏松課件57骨質(zhì)量和骨質(zhì)疏松課件58骨質(zhì)量和骨質(zhì)疏松課件59骨質(zhì)量和骨質(zhì)疏松課件60骨質(zhì)量和骨質(zhì)疏松課件61骨質(zhì)量和骨質(zhì)疏松課件62骨質(zhì)量和骨質(zhì)疏松課件63骨質(zhì)量和骨質(zhì)疏松