Posterior pelvic tilt in patients with decreased lumbar lordosis decreases acetabular femoral head covering

Orthopedics. 2002 Mar;25(3):321-4.


The relationship between pelvic tilt and acetabular femoral head covering was determined in 38 patients with decreased lumbar lordosis. Posterior pelvic tilt and acetabular femoral head covering were measured on radiographs taken in both supine and standing positions. Previously reported normal values obtained from 96 patients were used as controls. Posterior pelvic tilt increased (P<.01) in patients with decreased lumbar lordosis and anterior acetabular femoral head covering decreased (P<.0001) compared with the controls. These differences were more remarkable in the standing position than in the supine position. Patients with decreased lumbar lordosis have decreased femoral head covering, especially in the standing position.

Publication types

  • Comparative Study

MeSH terms

  • Acetabulum / anatomy & histology
  • Acetabulum / diagnostic imaging*
  • Adult
  • Aged
  • Female
  • Femur Head / anatomy & histology
  • Femur Head / diagnostic imaging*
  • Hip Joint / anatomy & histology
  • Hip Joint / diagnostic imaging
  • Humans
  • Lordosis / diagnostic imaging*
  • Lumbar Vertebrae / anatomy & histology
  • Lumbar Vertebrae / diagnostic imaging*
  • Male
  • Middle Aged
  • Posture
  • Probability
  • Prospective Studies
  • Radiographic Image Interpretation, Computer-Assisted / methods*
  • Reference Values
  • Sampling Studies