Acetabular sourcil
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Updates to Article Attributes
The acetabular sourcil is a radiographic feature seen on plain radiographs of the hip and pelvis as well as coronal CT reformats and MR images. It
Gross anatomy
The acetabular sourcil refers to the roof or the weight-bearing area of the acetabulum and is characterizedcharacterised by an increased degree of sclerosissclerosis. It normally has a concave shape and is congruent with the femoral head 5.
Clinical importance
An upsloping lateral or flattened/incongruous sourcil indicates acetabular dysplasia and hip instability 1,4, a downsloping sourcil leads to pincer morphology5.
Its medial and lateral edges formare important landmarks for several signs and measurements in the evaluation of hip morphology including the following 1,2:
tTönnis angle- modified lateral centre-edge angle
by Ogata - medial centre
edge-edge angle - acetabular arc
- fovea alta
An upsloping lateral sourcil indicates acetabular dysplasia and hip instability 1,4, a downsloping sourcil leads to pincer morphology.
See also
-<p>The<strong> acetabular sourcil </strong>is a radiographic feature seen on <a title="Plain radiographs" href="/articles/radiograph-1">plain radiographs</a> of the <a title="Hip (AP view)" href="/articles/hip-ap-view">hip</a> and <a title="Pelvis (AP view)" href="/articles/pelvis-ap-view-1">pelvis</a> as well as coronal CT reformats and MR images. It refers to the roof or the weight-bearing area of the <a title="Acetabulum" href="/articles/acetabulum">acetabulum</a> and is characterized by an increased degree of sclerosis.</p><p>Its medial and lateral edges form important landmarks for several signs and measurements in the evaluation of hip morphology including the following <sup>1,2</sup>:</p><ul>-<li><a href="/articles/acetabular-index">tönnis angle</a></li>-<li>modified <a href="/articles/lateral-center-edge-angle">lateral centre-edge angle</a> by Ogata</li>-<li>medial centre edge angle</li>- +<p>The<strong> acetabular sourcil </strong>is a radiographic feature seen on <a href="/articles/radiograph-1">plain radiographs</a> of the <a href="/articles/hip-ap-view">hip</a> and <a href="/articles/pelvis-ap-view-1">pelvis</a> as well as coronal CT reformats and MR images.</p><h4>Gross anatomy</h4><p>The acetabular sourcil refers to the roof or the weight-bearing area of the <a href="/articles/acetabulum">acetabulum</a> and is characterised by increased sclerosis. It normally has a concave shape and is congruent with the femoral head <sup>5</sup>. </p><h4>Clinical importance</h4><p>An upsloping lateral or flattened/incongruous sourcil indicates <a href="/articles/acetabular-dysplasia">acetabular dysplasia</a> and hip instability <sup>1,4</sup>, a downsloping sourcil leads to <a href="/articles/pincer-morphology-femoroacetabular-impingement-2">pincer morphology</a> <sup>5</sup>.</p><p>Its medial and lateral edges are important landmarks for several signs and measurements in the evaluation of hip morphology <sup>1,2</sup>:</p><ul>
- +<li><a href="/articles/acetabular-index">Tönnis angle</a></li>
- +<li>modified <a href="/articles/lateral-center-edge-angle">lateral centre-edge angle</a>
- +</li>
- +<li>medial centre-edge angle</li>
-</ul><p>An upsloping lateral sourcil indicates <a href="/articles/acetabular-dysplasia">acetabular dysplasia</a> and hip instability <sup>1,4</sup>, a downsloping sourcil leads to <a href="/articles/pincer-morphology-femoroacetabular-impingement-2">pincer morphology</a>.</p><h4>See also</h4><ul><li><a href="/articles/acetabular-index">tönnis angle</a></li></ul>- +</ul>
References changed:
- 5. Welton K, Jesse M, Kraeutler M, Garabekyan T, Mei-Dan O. The Anteroposterior Pelvic Radiograph. J Bone Joint Surg. 2018;100(1):76-85. <a href="https://doi.org/10.2106/jbjs.17.00500">doi:10.2106/jbjs.17.00500</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/29298264">Pubmed</a>