Title: Pelvic avulsion fractures<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p>
Young athletes, especially around the age of puberty, are at higher risk for pelvic avulsion fractures</p>
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Often seen in sports that require sprinting, rapid changes in movement or jumping</p>
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Caused by sudden, forceful contraction of the muscles of the abdominal, the hip and thigh or the hamstring</p>
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Avulsion fractures can occur at many areas of the pelvis.</p>
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A mnemonic is: <strong>Alabama’s stoned rappers got ill hunting armadillos</strong></p>
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· <strong>Iliac crest</strong>: Abdominal muscles</p>
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· <strong>Anterior superior iliac crest</strong>: Sartorius</p>
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· <strong>Anterior inferior iliac crest</strong>: Rectus femoris</p>
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· <strong>Greater trochanter</strong>: Gluteal muscles</p>
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· <strong>Lesser trochanter</strong>: Iliopsoas **(rare in adults)</p>
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· <strong>Ischial tuberosity</strong>: Hamstrings</p>
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· <strong>Pubic symphysis</strong>: Adductor group</p>
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http://roentgenrayreader.blogspot.com/2010/07/pelvic-avulsion-fractures.html</p>
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** Isolated nontraumatic avulsion fractures of the lesser trochanter in adults is a pathognomonic sign of metastatic disease</p>
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This site has some good images of common injury patterns</p>
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http://radiopaedia.org/articles/apophyseal-avulsion-fractures-of-the-pelvis-and-hip</p>
<fieldset><legend>References</legend>
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http://roentgenrayreader.blogspot.com/2010/07/pelvic-avulsion-fractures.html</p>
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