Table 5 Within-scan variance for the mannequin and human participants calculated using the standard average value (SAV)
From: Appraisal of the DIERS method for calculating postural measurements: an observational study
| Spine shape parameter by subgroup | Mannequin | Human participants |
|---|---|---|
| Localization and distance | ||
| Trunk length VP-DM, mm | 0.0006 (0.02) | 2.79 (1.67) |
| Trunk length VP-SP, mm | 0.0010 (0.03) | 7.21 (2.69) |
| Trunk length VP-SP, % | 0.0001 (0.01) | 0.22 (0.47) |
| Dimple distance, mm | 0.0006 (0.02) | 3.22 (1.79) |
| Dimple distance, % | 0.0001 (0.01) | 0.15 (0.39) |
| Trunk and pelvis imbalances | ||
| Trunk inclination VP-DM, ° | 0.0001 (0.01) | 0.05 (0.22) |
| Trunk inclination VP-DM, mm | 0.0005 (0.02) | 3.69 (1.92) |
| Trunk imbalance VP-DM, ° | 0.0001 (0.01) | 0.06 (0.24) |
| Trunk imbalance VP-DM, mm | 0.0007 (0.03) | 4.13 (2.03) |
| Pelvic tilt DL-DR, ° | 0.0006 (0.02) | 0.90 (0.95) |
| Pelvic tilt DL-DR, mm | 0.0010 (0.03) | 2.28 (1.51) |
| Pelvic torsion DL-DR, ° | 0.0007 (0.03) | 0.62 (0.79) |
| Pelvic inclination dimples, ° | 0.0190 (0.14) | 1.01 (1.00) |
| Rotation correction pelvis, ° | 0.0000 (0.00) | 0.35 (0.59) |
| Spinal reference points | ||
| Inflection point ICT, mm | 0.0043 (0.07) | 6.10 (2.47) |
| Kyphotic apex, mm | 1.6175 (1.27) | 8.04 (2.84) |
| Inflection point ITL, mm | 0.0321 (0.18) | 36.04 (6.00) |
| Lordotic apex, mm | 0.0320 (0.18) | 10.72 (3.27) |
| Inflection point ILS, mm | 0.0112 (0.11) | 15.90 (3.99) |
| Fleche cervicale, mm | 0.0011 (0.03) | 2.32 (1.52) |
| Fleche lombaire, mm | 0.0010 (0.03) | 2.07 (1.44) |
| Fleche cervicale VP, mm | 0.0011 (0.03) | 2.88 (1.70) |
| Spinal curve measurements | ||
| Kyphotic angle ICT-ITL, ° | 0.0007 (0.03) | 1.02 (1.01) |
| Kyphotic angle VP-ITL, ° | 0.0006 (0.02) | 1.54 (1.24) |
| Kyphotic angle VP-T12, ° | 0.0004 (0.02) | 1.18 (1.09) |
| Lordotic angle ITL-ILS, ° | 0.0004 (0.02) | 2.29 (1.51) |
| Lordotic angle ITL-DM, ° | 0.0002 (0.01) | 1.92 (1.39) |
| Lordotic angle T12-DM, ° | 0.0005 (0.02) | 1.75 (1.32) |
| Pelvic inclination, ° | 0.0094 (0.10) | 0.73 (0.85) |
| Spinal deviation | ||
| Surface rotation RMS, ° | 0.0003 (0.02) | 0.29 (0.54) |
| Surface rotation max, ° | 0.0013 (0.04) | 6.30 (2.51) |
| Surface rotation right, ° | 0.0013 (0.04) | 1.36 (1.17) |
| Surface rotation left, ° | 0.0015 (0.04) | 0.98 (0.99) |
| Surface rotation amplitude, ° | 0.0026 (0.05) | 0.92 (0.96) |
| Trunk torsion, ° | 0.1244 (0.35) | 2.66 (1.63) |
| Lateral deviation RMS, mm | 0.0003 (0.02) | 0.53 (0.73) |
| Lateral deviation, mm | 0.0008 (0.03) | 6.29 (2.51) |
| Lateral deviation right, mm | 0.0008 (0.03) | 1.79 (1.34) |
| Lateral deviation left, mm | 0.0010 (0.03) | 1.22 (1.10) |
| Lateral deviation amplitude, mm | 0.0017 (0.04) | 2.50 (1.58) |