Longitudinal vs transverse petrous temporal bone fracture
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Longitudinal versus Transversetransverse petrous temporal bone fracture
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Temporal bone fractures generally refers to involvement of petrous part ofandfractures are classically divided into longitudinal and , transverse or mixed fracture patterns depending on the direction of fracture plane with respect to the long axis of the petrous temporal bone. Some features may aid in distinguishing them.
Longitudinal (Middle earpetrous temporal bone fracture)
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Mostmost common of all petrous temporal bone fracture (70-90%) -
Fracturefracture line is parallel to the long axis of petrous temporal bone. -
Labyrinth areotic capsule is spared -
Ossiclesossicles are often involved resulting in conductive hearing loss. -
Involvementinvolvement ofTympanicthe tympanic membrane. -
Facialfacial nerve involvement (~25%)
Transverse (Inner earpetrous temporal bone fracture)
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Lessless common temporal bone fracture (20-30%) -
Fracturefracture line is perpendicular to the long axis of petrous temporal bone. -
Labyrinth areotic capsule is often involved resulting in sensorineural hearing loss. -
Ossiclesossicles and the tympanic membrane are usually spared. -
Facialfacial nerve involvement (~50%)
-<p><a href="/articles/temporal-bone-fractures-1">Temporal bone fractures</a> generally refers to involvement of petrous part of temporal bone and are classically divided into longitudinal and transverse fracture depending on the direction of fracture plane with respect to long axis of petrous temporal bone. Some features may aid in distinguishing them.</p><p> </p><h5><a href="/articles/longitudinal-temporal-bone-fractures-1"><strong>Longitudinal (Middle ear fracture)</strong></a></h5><ul>-<li>Most common of all petrous temporal bone fracture (70-90%)</li>-<li>Fracture line is parallel to the long axis of petrous temporal bone.</li>-<li>Labyrinth are spared</li>-<li>Ossicles are involved resulting in conductive hearing loss.</li>-<li>Involvement of Tympanic membrane.</li>-<li>Facial nerve involvement (~25%)</li>-</ul><p> </p><h5><a href="/articles/transverse-temporal-bone-fractures"><strong>Transverse (Inner ear fracture)</strong></a></h5><ul>-<li>Less common temporal bone fracture (20-30%)</li>-<li>Fracture line is perpendicular to the long axis of petrous temporal bone.</li>-<li>Labyrinth are involved resulting in sensorineural hearing loss.</li>-<li>Ossicles and the tympanic membrane are spared.</li>-<li>Facial nerve involvement (~50%)</li>- +<p><strong>Petrous temporal bone fractures</strong> are classically divided into <strong>longitudinal</strong>, <strong>transverse </strong>or mixed fracture patterns depending on the direction of fracture plane with respect to the long axis of the <a title="Petrous temporal bone" href="/articles/petrous-part-of-temporal-bone">petrous temporal bone</a>. Some features may aid in distinguishing them. </p><h4><strong>Longitudinal petrous temporal bone fracture</strong></h4><ul>
- +<li>most common of all petrous temporal bone fracture (70-90%)</li>
- +<li>fracture line is parallel to the long axis of petrous temporal bone</li>
- +<li>otic capsule is spared</li>
- +<li>
- +<a title="Ossicles" href="/articles/ossicles">ossicles</a> are often involved resulting in conductive hearing loss</li>
- +<li>involvement of the <a title="Tympanic membrane" href="/articles/tympanic-membrane">tympanic membrane</a>
- +</li>
- +<li>facial nerve involvement (~25%)</li>
- +</ul><h4><strong>Transverse petrous temporal bone fracture</strong></h4><ul>
- +<li>less common temporal bone fracture (20-30%)</li>
- +<li>fracture line is perpendicular to the long axis of petrous temporal bone</li>
- +<li>otic capsule is often involved resulting in sensorineural hearing loss</li>
- +<li>ossicles and the tympanic membrane are usually spared</li>
- +<li>facial nerve involvement (~50%)</li>
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Image 2 CT (non-contrast) ( update )
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Figure 12: axis of transverse fracture
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