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The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
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The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
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In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
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Related Experiment Video

Updated: Apr 4, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
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Pelvic tilt compensates for increased acetabular anteversion.

Robert K Zahn1, Sarah Grotjohann2, Heiko Ramm3

  • 1Centre for Musculoskeletal Surgery, Department for Orthopaedics, Department for Traumatology, Charité-University Medicine Berlin, Charitéplatz 1, 10117, Berlin, Germany. Robert.zahn@charite.de.

International Orthopaedics
|August 31, 2015
PubMed
Summary
This summary is machine-generated.

Pelvic tilt influences acetabular anteversion (AA) orientation. Anterior pelvic tilt compensates for increased AA, highlighting the importance of considering pelvic rotation in anatomical assessments.

Keywords:
Acetabular anteversionAcetabular orientationPelvic tiltSpino-pelvic balance

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Area of Science:

  • Orthopedics
  • Anatomy
  • Biomechanical Engineering

Background:

  • Pelvic tilt is a critical factor influencing the functional orientation of the acetabulum.
  • Understanding the interplay between pelvic tilt and acetabular anteversion (AA) is crucial for accurate anatomical assessment.

Purpose of the Study:

  • To investigate the interaction between pelvic tilt and functional acetabular anteversion (AA) in individuals positioned supine.
  • To analyze gender-specific and age-related differences in pelvic tilt and AA.

Main Methods:

  • Computed tomography (CT) scans were used to measure pelvic tilt and AA in 138 individuals.
  • Acetabular anteversion (AA) was calculated relative to both the anterior pelvic plane (APP) and the table plane.
  • Statistical analysis was performed to identify gender and age-related variations.

Main Results:

  • No significant gender or age-related differences were found in pelvic sagittal rotation.
  • Females exhibited significantly higher AA angles compared to males (20.0° vs 17.2°, p < 0.001) relative to the APP.
  • A positive correlation was observed between anterior pelvic tilt and AA; individuals with higher AA demonstrated greater anterior pelvic tilt (p < 0.0001).

Conclusions:

  • Acetabular anteversion (AA) calculations must account for pelvic sagittal rotation for precise acetabular orientation.
  • Pelvic tilt is intrinsically linked to acetabular orientation and serves as a compensatory mechanism for elevated AA.