Effect of lengthening along the anatomical axis of the femur and its clinical impact

Ahmed K Emara; Ahmed Nageeb Mahmoud; Khaled M Emara; Mariam K Emara

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Effect of lengthening along the anatomical axis of the femur and its clinical impact

Effect of lengthening along the anatomical axis of the femur and its clinical impact

作者：

Ahmed K Emara Ahmed Nageeb Mahmoud Khaled M Emara Mariam K Emara

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Bone

LENGTHENING

DEFORMITY

Femoral

LENGTHENING

External

fixation

INTRAMEDULLARY

NAIL

AXIS

deviation

摘要：

AIM To review and study the effect of lengthening along the anatomical axis of long bones and its relation to the mechanical axis deviation.METHODS We try in this review to calculate and discuss the exact clinical impact of lengthening along the anatomical axis of the femur on affecting the limb alignment.Also we used a trigonometric formula to predict the change of the femoral distal anatomical mechanical angle(AMA)after lengthening along the anatomical axis.RESULTS Lengthening along the anatomical axis of the femur by 10%of its original length results in reduction in the distal femoral AMA by 0.57 degrees.There is no objective experimental scientific data to prove that the Mechanical axis is passing via the center of the hip to the center of the knee.There is wide variation in normal anatomical axis for different populations.In deformity correction,surgeons try to reproduce the normal usual bone shape to regain normal function,which is mainly anatomical axis.CONCLUSION Lengthening of the femur along its anatomical axis results in mild reduction of the distal femoral AMA.This may partially compensate for the expected mechanical axis lateralisation and hence justify its minimal clinical impact.

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世界骨科杂志：英文版2021 世界骨科杂志：英文版2020 世界骨科杂志：英文版2019 世界骨科杂志：英文版2018 世界骨科杂志：英文版2017 世界骨科杂志：英文版2016

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篇名	Effect of lengthening along the anatomical axis of the femur and its clinical impact
来源期刊	世界骨科杂志	学科	医学
关键词	Bone LENGTHENING DEFORMITY Femoral LENGTHENING External fixation INTRAMEDULLARY NAIL AXIS deviation
年，卷（期）	2017,（5）	所属期刊栏目
研究方向		页码范围	431-435
页数	5页	分类号	R
字数		语种
DOI