Lumbar spine posture and spinopelvic parameters change in various standing and sitting postures

WOS: 000469215400020PubMed ID: 30498961PurposeThis study aimed to compare differences in lumbosacral and spinopelvic parameters between pain developers and non-pain developers as well as the effects of various posture changes. MethodsA total of 38 consecutive participants, 20 standing-induced low back pain developers (mean age: 27.75.3; mean BMI: 22.642.95) and 18 non-pain developers (mean age: 29.07.5; mean BMI: 24.2 +/- 1.87) (p>0.05), were prospectively evaluated. Six sagittal plane radiographs were taken. Upright standing posture was used as the reference posture. Lumbar lordosis, lumbosacral lordosis, L1/L2 and L5/S1 intervertebral (IV) joint angles, pelvic incidence, pelvic tilt and sacral slope were measured on each radiograph. Results p id=Par3 There were no significant differences in terms of age, BMI, SF-36 score, or Oswestry Disability Index scores between pain developer and non-pain developer groups (p>0.05). Pain developers had significantly larger lumbar lordosis, larger L1/L2 intervertebral angles, larger pelvic incidences and sacral slopes in all postures (p<0.05). The contribution of L5/S1 intervertebral angle to lumbar flexion was higher than that of the L1/L2 intervertebral angle during stair descent, the sitting and the leaning forward while sitting postures (p