脊柱侧凸后路术后矫正度丢失的原因

TheCauseofLosofCorrectionAngleofScoliosisFolowingFolowingPosteriorInstrumentationFixa┐tionandFusion

分析经长期随诊脊柱侧凸术后矫正度丢失的程度及原因。１４２例脊柱侧凸采用后路器械矫正固定，８６例随诊６个月～８年６个月（平均３年４个月），术前、术后及随诊的Ｘ线片对比，分析丢失度与侧凸类型、年龄、内固定种类等之间的关系。２８例（３２．５％）丢失度大于１５°，丢失度与年龄、侧凸类型无明显关系，而与内固定节段的选择、内固定种类及融合技术明显相关。正确选择内固定种类及融合节段，提高融合技术，减少假关节及脱钩的发生率，是长期维持脊柱侧凸术后矫正度的关键。

Theauthorsanalyseathecausesoflossofcorractionangleofscoliosisfollowingposteri-orspinalinstrumentalfixationandfusionin26caseswithafolow-upforanaverageof3yearsand4months..Thepreoperative,postoperativeandthefolow-upX-rayfilmswerecomparedinordertoeluci-datetherelationshipbetweenthecausesoflossofcorrectionangleandthescoliotictypeandageatthetimeofsurgeryaswelasthelevelsoffixationandfusion.28cases(32.6%)hadlossofcorectionformorethan15degrees.Therelationshipbetweenage,scoliotictypeandthelossofcorectionanglewasnon-significant,however,thelaterwassignificantbetweentheselectionofsegmentalleveloffixation,theinternalfixationinstrumentation,andthetechniqueoffusion.Thekeypointsforthemaintenanceofthecorrectedpositionforlong-termareproperselectionoffixationandtheleveloffusion.,improve-mentofthetechniqueoffusion,andthereductionoftheincidencesofpseudoarthrosisandhookdis-lodgement.