Pries Esther, Dreischarf Marcel, Bashkuev Maxim, Putzier Michael, Schmidt Hendrik
Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Germany.
Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Germany.
J Biomech. 2015 Sep 18;48(12):3080-7. doi: 10.1016/j.jbiomech.2015.07.030. Epub 2015 Aug 7.
Frequent upper body bending is associated with low back pain (LBP). The complex flexion movement, combining lumbar and pelvic motion, is known as "lumbopelvic rhythm" and can be quantified by dividing the change in the lumbar spine curvature by the change in pelvic orientation during flexion movement (L/P ratio). This parameter is clinically essential for LBP prevention, for diagnostic procedures and therapy; however, the effects of age and gender, in detail, are unknown. The Epionics SPINE system, utilizing strain-gauge technology and acceleration sensors, was used to assess lumbar lordosis and sacrum orientation during standing and lumbar angle and sacrum orientation during maximal upper body flexion in 309 asymptomatic subjects (age: 20-75 yrs; ♂: 134; ♀: 175). The effects of age and gender on these characteristics as well as on the resultant range of flexion (RoF) and lumbopelvic rhythm were investigated. Aging significantly reduced lumbar lordosis by 8.2° and sacrum orientation by 6.6° during standing in all subjects. With aging, the lumbar RoF decreased by 7.7°, whereas the pelvic RoF compensated for this effect and increased by 7.0°. The L/P ratio decreased from 0.80 to 0.65 with age; however, this decrease was only significant in men. Gender affected sacrum orientation in standing and in flexion as well as the L/P ratio. This study demonstrated the effects of age and gender on lordosis, sacrum orientation and lumbopelvic rhythm. These findings are of importance for the individual prevention of LBP, and provide a baseline for differentiating symptomatic from asymptomatic age- and gender-matched subjects.
频繁的上身弯曲与腰痛（LBP）相关。结合腰椎和骨盆运动的复杂屈曲运动被称为“腰骨盆节律”，可以通过在屈曲运动期间将腰椎曲率的变化除以骨盆方向的变化来量化（L/P比率）。该参数对于预防腰痛、诊断程序和治疗在临床上至关重要；然而，年龄和性别的具体影响尚不清楚。Epionics SPINE系统利用应变片技术和加速度传感器，对309名无症状受试者（年龄：20 - 75岁；男性：134名；女性：175名）站立时的腰椎前凸和骶骨方向以及最大上身屈曲时的腰椎角度和骶骨方向进行了评估。研究了年龄和性别对这些特征以及由此产生的屈曲范围（RoF）和腰骨盆节律的影响。在所有受试者中，随着年龄增长，站立时腰椎前凸显著降低8.2°，骶骨方向降低6.6°。随着年龄增长，腰椎RoF降低7.7°，而骨盆RoF补偿了这种影响并增加了7.0°。L/P比率随年龄从0.80降至0.65；然而，这种下降仅在男性中显著。性别影响站立和屈曲时的骶骨方向以及L/P比率。本研究证明了年龄和性别对腰椎前凸、骶骨方向和腰骨盆节律的影响。这些发现对于个体预防腰痛具有重要意义，并为区分有症状和无症状的年龄及性别匹配受试者提供了基线。
