Acetabular retroversion
2022年7月26日 · Acetabular retroversion denotes an abnormal posterior angulation of the superolateral acetabular rim, resulting in excessive coverage of the femoral head and metaphysis along the anterior border 1,2. Acetabular retroversion is a common abnormality affecting 5 to 20% of the general population.
Acetabular retroversion | Radiology Reference Article - Radiopaedia.org
2022年7月26日 · Acetabular retroversion denotes an abnormal posterior angulation of the superolateral acetabular rim, resulting in excessive coverage of the femoral head and metaphysis along the anterior border 1,2. Acetabular retroversion is a common abnormality affecting 5 to 20% of the general population.
Radiopaedia.org, the peer-reviewed collaborative radiology …
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A, CT scan shows alpha angle formed between line drawn from center of femoral head through central axis of femoral neck and second line drawn from center of femoral head to anterior point where distance from center of head exceeds radius of femoral head. Large alpha angle (> 55°) implies asphericity of anterior femoral head-neck junction.
Acetabular retroversion: Diagnosis and treatment - PMC
Acetabular retroversion (AR) consists of a malorientation of the acetabulum in the sagittal plane. AR is associated with changes in load transmission across the hip, being a risk factor for early osteoarthrosis. The pathophysiological basis of AR is an anterior acetabular hyper-coverage and an overall pelvic rotation.
CT scan shows angle of acetabular version. Line a is
Angle of acetabular version is angle between lines b and c. Acetabular retroversion was recorded at angle less than 15°. [...] The purpose of this study was to use CT to determine the...
Best Practices: Hip Femoroacetabular Impingement | AJR
2021年1月21日 · Anteroposterior radiographs of the pelvis should be used to assess the presence of pincer deformities, such as acetabular overcoverage, defined as a lateral center-edge angle larger than 39°, or protrusio acetabuli (i.e., femoral head contour touches or overlaps with the ilioischial line), which reflects the rarest (reported prevalence, 3% [32 ...
The “true” acetabular anteversion angle (AV angle): 2D CT versus …
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. We analyzed 258 hemipelvises and created 3D models.
Diagnosis of acetabular retroversion: Three signs positive and ...
2022年1月1日 · We performed a retrospective controlled diagnostic study with 538 hips comparing a single and three radiographic signs for acetabular retroversion on radiographs with MRI/CT-based measurement of central AV.
Acetabular retroversion: Diagnosis and treatment - PubMed
2018年11月12日 · Acetabular retroversion (AR) consists of a malorientation of the acetabulum in the sagittal plane. AR is associated with changes in load transmission across the hip, being a risk factor for early osteoarthrosis.