目的基于中国南方人群股骨外翻角(femoral valgus angle,FVA)和股骨弯曲角(femoral bending angel,FBA)的定量分析,探究下肢旋转体位改变对不同形态股骨的FVA测量值的影响,提高膝关节置换手术的安全性。方法收集我院75位(113侧)无膝关...目的基于中国南方人群股骨外翻角(femoral valgus angle,FVA)和股骨弯曲角(femoral bending angel,FBA)的定量分析,探究下肢旋转体位改变对不同形态股骨的FVA测量值的影响,提高膝关节置换手术的安全性。方法收集我院75位(113侧)无膝关节骨性关节炎患者的下肢全长CTA扫描数据。通过三维重建和定位,测量FBA和FVA。根据FBA分为4组:严重内翻畸形组:FBA>4°;轻度内翻畸形组:1°<FBA≤4°;无畸形组:-1°≤FBA<1°;外翻畸形组:FBA≤-1°,对比各组的FVA,确定FBA与FVA之间的相关性。应用三维模拟技术,以股骨后髁连线与X轴平行时作为股骨中立位,每10°为一个档位,调节股骨轴向旋转角度从内旋20°至外旋40°,记录FBA与FVA测量值,并作相关统计分析。结果总体FVA平均值为(5.3±1.4)°,4组FVA分别为(7.2±1.1)°,(3.4±0.8)°,(5.6±0.87)°及(4.7±1.0)°,各组间存在统计学差异(P<0.05);FBA与FVA存在显著相关性(R2=0.6,P<0.001)。下肢从内旋20°至外旋40°,各组的FVA呈增大趋势,各组间无统计学差异(P>0.05)。结论股骨干形态存在内翻或外翻畸形时,直接影响股骨外翻角的大小。股骨外翻角的测量需综合考虑股骨干形态及下肢旋转体位的影响。展开更多
Knee osteoarthritis(OA) is a progressive joint disease hallmarked by cartilage and bone breakdown and associated with changes to all of the tissues in the joint,ultimately causing pain,stiffness,deformity and disabili...Knee osteoarthritis(OA) is a progressive joint disease hallmarked by cartilage and bone breakdown and associated with changes to all of the tissues in the joint,ultimately causing pain,stiffness,deformity and disability in many people.Radiographs are commonly used for the clinical assessment of knee OA incidence and progression,and to assess for risk factors.One risk factor for the incidence and progression of knee OA is malalignment of the lower extremities(LE).The hipknee-ankle(HKA) angle,assessed from a full-length LE radiograph,is ideally used to assess LE alignment.Careful attention to LE positioning is necessary to obtain the most accurate measurement of the HKA angle.Since full-length LE radiographs are not always available,the femoral shaft-tibial shaft(FS-TS) angle may be calculated from a knee radiograph instead.However,the FS-TS angle is more variable than the HKA angle and it should be used with caution.Knee radiographs are used to assess the severity of knee OA and its progression.There are three types of ordinal grading scales for knee OA:global,composite and individual feature scales.Each grade on a global scale describes one or more features of knee OA.The entire description must be met for a specific grade to be assigned.The KellgrenLawrence scale is the most commonly-used global scale.Composite scales grade several features of knee OA individually and sum the grades to create a total score.One example is the compartmental grading scale for knee OA.Composite scales can respond to change in a variety of presentations of knee OA.Individual feature scales assess one or more OA features individually and do not calculate a total score.They are most often used to monitor change in one OA feature,commonly joint space narrowing.The most commonly-used individual feature scale is the OA Research Society International atlas.Each type of scale has its advantages;however,composite scales may offer greater content validity.Responsiveness to change is unknown for most scales and deserves further evaluation.展开更多
文摘目的基于中国南方人群股骨外翻角(femoral valgus angle,FVA)和股骨弯曲角(femoral bending angel,FBA)的定量分析,探究下肢旋转体位改变对不同形态股骨的FVA测量值的影响,提高膝关节置换手术的安全性。方法收集我院75位(113侧)无膝关节骨性关节炎患者的下肢全长CTA扫描数据。通过三维重建和定位,测量FBA和FVA。根据FBA分为4组:严重内翻畸形组:FBA>4°;轻度内翻畸形组:1°<FBA≤4°;无畸形组:-1°≤FBA<1°;外翻畸形组:FBA≤-1°,对比各组的FVA,确定FBA与FVA之间的相关性。应用三维模拟技术,以股骨后髁连线与X轴平行时作为股骨中立位,每10°为一个档位,调节股骨轴向旋转角度从内旋20°至外旋40°,记录FBA与FVA测量值,并作相关统计分析。结果总体FVA平均值为(5.3±1.4)°,4组FVA分别为(7.2±1.1)°,(3.4±0.8)°,(5.6±0.87)°及(4.7±1.0)°,各组间存在统计学差异(P<0.05);FBA与FVA存在显著相关性(R2=0.6,P<0.001)。下肢从内旋20°至外旋40°,各组的FVA呈增大趋势,各组间无统计学差异(P>0.05)。结论股骨干形态存在内翻或外翻畸形时,直接影响股骨外翻角的大小。股骨外翻角的测量需综合考虑股骨干形态及下肢旋转体位的影响。
文摘Knee osteoarthritis(OA) is a progressive joint disease hallmarked by cartilage and bone breakdown and associated with changes to all of the tissues in the joint,ultimately causing pain,stiffness,deformity and disability in many people.Radiographs are commonly used for the clinical assessment of knee OA incidence and progression,and to assess for risk factors.One risk factor for the incidence and progression of knee OA is malalignment of the lower extremities(LE).The hipknee-ankle(HKA) angle,assessed from a full-length LE radiograph,is ideally used to assess LE alignment.Careful attention to LE positioning is necessary to obtain the most accurate measurement of the HKA angle.Since full-length LE radiographs are not always available,the femoral shaft-tibial shaft(FS-TS) angle may be calculated from a knee radiograph instead.However,the FS-TS angle is more variable than the HKA angle and it should be used with caution.Knee radiographs are used to assess the severity of knee OA and its progression.There are three types of ordinal grading scales for knee OA:global,composite and individual feature scales.Each grade on a global scale describes one or more features of knee OA.The entire description must be met for a specific grade to be assigned.The KellgrenLawrence scale is the most commonly-used global scale.Composite scales grade several features of knee OA individually and sum the grades to create a total score.One example is the compartmental grading scale for knee OA.Composite scales can respond to change in a variety of presentations of knee OA.Individual feature scales assess one or more OA features individually and do not calculate a total score.They are most often used to monitor change in one OA feature,commonly joint space narrowing.The most commonly-used individual feature scale is the OA Research Society International atlas.Each type of scale has its advantages;however,composite scales may offer greater content validity.Responsiveness to change is unknown for most scales and deserves further evaluation.
