The "true" acetabular anteversion angle (AV angle): 2D CT versus 3D model.

Introduction: Different factors can lead to inconsistencies in measurement for the acetabular version using 2D axial CT-cuts. We have defined a "true" anteversion angle (AV angle) in the physiological position of the pelvis in 3D with the largest European population measured to our knowledge.

Material And Methods: We analyzed 258 hemipelvises and created 3D models.

Virtual reconstruction of pelvic tumor defects based on a gender-specific statistical shape model.

Tumors in the pelvic region cause deformation and destruction of bony structures. Because the original pelvic anatomy cannot be adequately assessed at the tumor site, reconstruction with patient-specific implants is required. A widely used strategy for the reconstructive planning is mirroring of the contralateral side.