Alpha angle (cam morphology) | Radiology Reference Article ...
2024年5月7日 · The alpha angle is a radiological measurement proposed for the detection of cam morphology, which is sometimes associated with femoroacetabular impingement (FAI). The term alpha angle is also used in a separate and unrelated context in the evaluation of developmental dysplasia of the hip (DDH) in children.
Alpha angle (developmental dysplasia of the hip) | Radiology …
2023年4月24日 · The alpha angle is a measurement used in the ultrasonographic assessment of developmental dysplasia of the hip (DDH). The term alpha angle is also used in a separate and unrelated context in the evaluation of femoroacetabular impingement.
Femoroacetabular Impingement | Radsource
The alpha angle is the most widely used (abnormal > 55 degrees), indicating the angle at which the femoral head departs from its normal spherical outline. Femoral head-neck offset distance (abnormal < 8 mm) and associated ratios can also be used to demonstrate a …
Femoroacetabular Impingement: Can the Alpha Angle Be …
2012年11月23日 · Femoroacetabular impingement is an important entity with well-described radiographic findings. One of the criteria of the cam type of femoroacetabular impingement is femoral head–neck dysplasia, denoted mathematically as the “alpha angle.”
Classifying Cam Morphology by the Alpha Angle: A Systematic …
The alpha angle is the most often used measure to classify cam morphology. There is currently no agreement on which alpha angle threshold value to use. To systematically investigate the different alpha angle threshold values used for defining cam ...
The Alpha Angle - PubMed
2024年10月16日 · The alpha angle was originally defined on magnetic resonance imaging (MRI) scans, using a plane, parallel to the axis of the femoral neck. However, much of the literature on the alpha angle has used radiographs or other imaging modalities to quantify the alpha angle. The measurement of the alpha …
Cam Deformity: Radiological Diagnosis And Management For ...
2024年9月27日 · Cam deformity is a hip abnormality associated with femoroacetabular impingement (FAI), causing pain and inflammation. Radiological findings indicate an elevated alpha angle (cam lesion) and related concepts like pincer lesion and pistolvormchen deformity.
Femoroacetabular impingement syndrome | Radiology Reference …
2024年6月18日 · cam-type: the loss of sphericity leads to shear forces at the chondrolabral junction during hip flexion and internal rotation which can then lead to chondrolabral separation and chondral delamination typically in the anterosuperior aspect of the acetabulum 2
Validity of the Alpha Angle Measurement on Plain Radiographs …
2010年10月15日 · We evaluated the accuracy and reproducibility of plain radiography in the diagnosis of cam-type deformity. Sixty-eight patients (37 females, 31 males) with a mean age of 38 years (range, 17–60 years) were treated for intraarticular hip pathology with 43 hips having cam-type femoroacetabular impingement and 25 having isolated labral tears.
Alpha angle measurement using AP hip radiograph.
Alpha angle measurement using AP hip radiograph. CAM lesions are now seen as a significant pathology that could cause osteoarthritis of the hip joint. Currently there is no gold standard...