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Updated: Aug 29, 2025

Evaluation of Patients' Posture and Gait Profile After Lumbar Fusion Surgery by Video Rasterstereography and Treadmill Gait Analysis
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EFFECTS OF HIP FLEXION CONTRACTURE ON SAGITTAL SPINOPELVIC PARAMETERS.

Rômulo Pedroza Pinheiro1, Matheus Pippa Defino2, Flávio Luis Garcia1

  • 1Universidade de São Paulo, School of Medicine of Ribeirão Preto, Department of Orthopedics and Anesthesiology, Ribeirão Preto, SP, Brazil.

Acta Ortopedica Brasileira
|September 12, 2022
PubMed
Summary

Hip flexion contracture in hip osteoarthritis may increase lumbar lordosis. Total hip arthroplasty (THA) impacts spinopelvic parameters, increasing pelvic tilt and reducing sacral slope in some patients.

Keywords:
HipPelvisPostural BalanceSpine

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Biomechanical Engineering

Background:

  • Hip flexion contracture is common in hip osteoarthritis.
  • Spinopelvic parameters influence spinal alignment.
  • Understanding contracture effects is crucial for surgical outcomes.

Purpose of the Study:

  • Assess hip flexion contracture's influence on lumbar lordosis and spinopelvic parameters.
  • Evaluate changes in these parameters post-total hip arthroplasty (THA).

Main Methods:

  • Compared 10 patients with hip flexion contracture to 10 without.
  • Assessed radiographic parameters (SVA, LL, PI, SS, PT) pre- and post-THA.
  • Utilized a case-control study design (Level of Evidence III).

Main Results:

  • No significant difference in pre- to postoperative lumbar lordosis (LL).
  • Pelvic tilt (PT) increased in both groups after THA.
  • Sacral slope (SS) decreased in the group without hip flexion contracture post-THA.

Conclusions:

  • Hip flexion contracture may be associated with increased lumbar lordosis in hip osteoarthritis, though not statistically significant.
  • THA alters spinopelvic parameters, notably increasing pelvic tilt.
  • Further research is needed on hip flexion contracture's impact on pelvic mobility and spinopelvic relationships.