Department of Clinical Research, University of Southern Denmark, Odense, Denmark
University College Absalon, Center of Nutrition and Rehabilitation, Department of Physiotherapy, Region Zealand, Denmark
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Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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Odense Patient data Explorative Network (OPEN), Odense, Denmark
Centre for Evidence-Based Medicine Odense (CEBMO), Odense University Hospital, Odense, Denmark
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Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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Introduction Excessive anterior pelvic tilt is a position of the pelvis in a standing posture where the tilt is larger than what is considered normal. Pelvic tilt measurements obtained from radiographic imaging are used in surgical planning
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standardized – particularly for pelvic tilt (PT) – which commonly differs between spine and hip surgeons. Figure 1 The measurements for radiographic spinopelvic parameters in the (A) standing, (B) upright seated, and (C) deep-flexed-seated position for
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aspect of the femur ( 7 ). Spinopelvic parameters such as sacral slope (SS), pelvic tilt (PT), and pelvic incidence (PI) aid in classifying such positional changes ( Figs 1 and 2 ). Figure 1 Reduction of sacral slope (SS, blue lines) between the
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parameters. Pelvic anteversion decreases acetabulum version; pelvic retroversion increases acetabulum version; both can explain changes between standing and sitting. Note . LL, lumbar lordosis; PI, pelvic incidence; SS, sacral slope; PT, pelvic tilt; APPt
Hospital del Trabajador, Santiago, Chile
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Hospital del Trabajador, Santiago, Chile
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Hospital Roberto del Río, Santiago, Chile
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regional (cervical lordosis, thoracic kyphosis, lumbar lordosis, pelvic incidence, pelvic tilt and sacral slope) and global (SVA [sacral vertical axis] and T1-pelvis angle), the relationship between them, the implication of physiological ageing of the VC on
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excessive distortion. To evaluate functional leg-length discrepancies and pelvic tilt in the frontal and sagittal plane, AP pelvic radiographs should be taken with both iliac spines at the same distance from the film. As such, the symphysis pubis should
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navigation Reliance on imageless computer navigation systems on the APP has been criticised as a potentially inaccurate method for determining pelvic position due to registration errors and its lack of accounting for pelvic tilt. 36 , 37 An ultrasound
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. Pelvic tilt (movement in the sagittal plane) significantly alters cup anteversion. A change in the sagittal pelvic tilt of 1° affects functional cup anteversion by approximately 0.7° ( 40 ). Functional cup inclination is also affected by the change in
South West London Elective Orthopaedic Centre, UK
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spino-pelvic parameters: sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), lumbar lordosis (LL) and the C7 plumb line (C7pl) ( Fig. 1 ). 4 , 5 SS, PT and LL are ‘functional parameters’, as their value varies with body position; PI is a
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, achieving implant positioning within these safe zones is challenging owing to intraoperative pelvic tilt, distorted anatomical landmarks, and limited accuracy and reproducibility of the alignment guides. 24 , 25 Robotic THA uses intraoperative mapping
