虽然在健康人群中，腰椎前凸与骶骨倾斜角会随着年龄增大而减小，但尽管OA会随着年龄而进展，OA病例的腰椎前凸和骶骨倾斜角保持不变。
Although lumbar lordotic and sacral slope angles decreased with aging in the healthy subjects, patients with OA retained the lumbar lordotic and sacral slope angles despite progression of OA with age.
对于腰椎的生理前凸变化是否与下腰痛有必然的联系，尚有一些争论。
There are some arguments for the relation of changes in Angle of lumbar lordosis and low back pain.
根据矢状面上脊柱平衡的理念，颈椎和腰椎的前凸，胸椎和骶椎的后凸构成的交替曲线使头能够定位与躯体和骨盆的上方。
According to the concept of sagittal spinal balance, the alternating curves of cervical and lumbar lordosis and thoracic and sacral kyphosis enable the head to be positioned over the trunk and pelvis.
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