摘要
目的:为国人开展腰椎间盘人工髓核假体(prostheticdicsnucleus,PDN)置换术提供影像解剖学资料。方法:对56例正常人的腰椎间盘(男44例,女12例)MRIT2加权像中髓核矢状径、横径,椎间隙前、中、后高度进行了测量。所选PDN假体为目前统一规格:前后径为12mm,高度分别为5mm、7mm、9mm。结果:髓核矢状径、横径及椎间隙高度均数之间无明显性别差异(P>0.05)。髓核矢状径均大于12mm,但大于24mm在L2/3中为23.2%,L3/4中21.4%,L4/5中21.4%,L5/S1中16.1%。椎间隙后高较低,5mm^9mm者在L2/3中为85.7%,L3/4中82.1%,L4/5中82.1%,L5/S1中58.9%,大于9mm者L2/3中0%,L3/4中1.8%,L4/5中1.8%,L5/S1中3.6%。结论:国人中大多数人腰椎间盘内仅可容纳单枚PDN假体,适合高度为5mm或7mm,可因人而异选择。
Objective:To provide the image anat omic data for replacement of the prosthetic disc nucleus(PDN).Method:56cases of (male44,female12)lumbar MRI T2image were used to measure the sagittal di-ameter and horizontal diameter of the nucleus pulposus and anterior,median,posterior h eight of the interverte-bral disc.Result:No statistic difference was found bet ween males and females in all measurement index taken in the study.Compared with the sagittal diameter of12mm for PDN,the sagittal diameter of the nucleus pul-posus were more than that in all lumbar levels,but more than double of that was2 3.2%at L2/3,21.4%at L3/4,21.4%at L4/5,16.1%at L5/S1respec tively.In addition,a ccording to the height of PDN,posterior height of intervertebral disc,more than5 mm and less than9mm was85.7%at L2/3,82.1%at L3/4,82.1%at L4/5, and58.9%at L5/S 1,more than9mm was0%at L2/3,1.8%at L3/4,1.8%at L4/5,3.6%at L5/S1.Conclusion: In Chinese population,a single PDN is suitable for most patients and the height of5mm or7mm of PDN is commonly chosen.
出处
《中国脊柱脊髓杂志》
CAS
CSCD
2003年第4期241-243,共3页
Chinese Journal of Spine and Spinal Cord
