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Table 2 Analysis of spinopelvic complex elements lumbar flexibility (∆ LL = LLstanding − LLsitting), pelvic mobility (∆ PT = PTstanding − PTsitting) and hip motion (∆ PFA = PFAstanding − PFAsitting) and spinopelvic parameter LL, APPT, PT, PFA and PI in standing position according to the BMI: group 1: ≥ 18.5–24.9 kg/m2 (n = 68), group 2: ≥ 25.0–29.9 kg/m2 (n = 81) and group 3: ≥ 30–39.9 kg/m2 (n = 41) preoperatively

From: Does obesity affect acetabular cup position, spinopelvic function and sagittal spinal alignment? A prospective investigation with standing and sitting assessment of primary hip arthroplasty patients

BMI groups 18.5–24.9 kg/m2 Preoperative mean (± SD) 25.0–29.9 kg/m2 Preoperative mean (± SD) 30–39.9 kg/m2 Preoperative mean (± SD) p-value (#1) p-value (#2) p-value (#3)
Preoperative spinopelvic parameter according to the BMI
∆ LL (°) 22.8 (12.0) 22.1 (12.0) 19.9 (12.8) .977 .743 .557
∆ PT (°) 18.2 (11.2) 17.6 (10.9) 20.1 (9.3) .982 .458 .749
∆ PFA (°) 56.4 (15.6) 57.8 (16.4) 53.9 (12.7) .935 .484 .799
LL stand (°) 55.2 (14.0) 49.0 (12.7) 49.2 (16.5) .023 .023 .099
PT stand (°) 14.0 (8.2) 13.4 (8.3) 15.5 (8.4) .949 .458 .756
PFA stand (°) 179.7 (11.1) 179.1 (10.6) 179.7 (10.9) .984 .989 1.0
APPT stand (°) 2.4 (7.6) -0.2 (8.4) -1.8 (8.1) .205 .577 .028
PI stand (°) 56.4 (12.9) 52.5 (12.3) 56.9 (12.6) .176 .195 .996
  1. P-values indicating differences between groups 1and 2 (#1), groups 2 and 3 (#2) and groups 1 and 3 (#3). ANOVA and post-hoc analysis according to Hochberg´s GT2 were used and level of significance set at p < 0.05, significant values were marked in bold. SD = standard deviation