Blumensaat line
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Blumensaat line, also known as the intercondylar line, is the line drawn along the roof of the intercondylar notch of the femur as seen on lateral radiograph on sagittal view of the knee joint. It
It can been used for:
- indicating
therelative position ofthepatellaas normally this line- normally intersects the lower pole of the patella -
suggestingevaluating for ACL injuryas the normal- normal ACL Blumensaat angle is ≤15° - describing
thecourse of an ACL graft (seeRadiographicevaluation ofanterior cruciate ligamentACL reconstruction) - identifying
thelocation of lateral femoral condyle sulcus, which- should be within10mm10 mm of the line
It may not always be straight and three types have been described 3:
- straight: ~35%
- small hill: ~20%
- large hill: ~45%
-<p><strong>Blumensaat line </strong>is the line drawn along the roof of the intercondylar notch of the <a href="/articles/femur">femur</a> as seen on lateral radiograph of the knee joint. It can been used for:</p><ul>-<li>indicating the relative position of the patella as normally this line intersects the lower pole of the <a href="/articles/patella">patella</a>- +<p><strong>Blumensaat line</strong>, also known as the <strong>intercondylar line</strong>, is the line drawn along the roof of the intercondylar notch of the <a href="/articles/femur">femur</a> on sagittal view of the knee.</p><p>It can been used for:</p><ul>
- +<li>indicating relative position of patella - normally intersects the lower pole of the <a href="/articles/patella">patella</a>
-<li>suggesting ACL injury as the normal <a href="/articles/anterior-cruciate-ligament">ACL Blumensaat angle</a> is ≤15°</li>-<li>describing the course of an ACL graft (see <a href="/articles/radiographic-evaluation-of-anterior-cruciate-ligament-reconstruction">Radiographic evaluation of anterior cruciate ligament reconstruction</a>)</li>-<li>identifying the location of the <a title="Lateral femoral notch sign (knee)" href="/articles/lateral-femoral-notch-sign-knee">lateral femoral condyle sulcus</a>, which should be within 10mm of the line</li>- +<li>evaluating for ACL injury - normal <a href="/articles/anterior-cruciate-ligament">ACL Blumensaat angle</a> is ≤15°</li>
- +<li>describing course of an ACL graft (see <a href="/articles/radiographic-evaluation-of-anterior-cruciate-ligament-reconstruction">evaluation of ACL reconstruction</a>)</li>
- +<li>identifying location of <a href="/articles/lateral-femoral-notch-sign-knee">lateral femoral condyle sulcus</a> - <a href="/articles/lateral-femoral-notch-sign-knee"></a>should be within 10 mm of the line</li>
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