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Transverse process fracture

Changed by Rania Adel Anan, 18 Dec 2021

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Transverse process fractures are common sequelae of trauma, although they are considered a minor and stable lumbar spine fracture. There is a strong association between transverse process fractures and other traumatic injuries.

Pathology

Transverse process fracture most commonly occurs in the upper lumbar spine and are commonly multiple ². The fracture line can extend into the transverse foramen, and in the cervical spine there is a risk of complicating vertebral artery dissection.

Aetiology

blunt trauma
lateral flexion-extension injury
psoas muscle avulsion
Malgaigne pelvic fracture

Associations

Although a minor injury to the lumbar spine, transverse process fractures require major force:

cervical transverse process fractures have a strong association with other cervical spine fractures ²andblunt cerebrovascular injury
~35% (range 20-50%) of patients with lumbar transverse process fractures have hepatic and splenic injuries, genitourinary and/or diaphragmatic injuries ¹

Radiographic features

CT is the modality of choice. Up to 60% of lumbar transverse process fractures identified on CT will be missed on plain radiographs ¹.

Differential diagnosis

In the lumbar region, consider anatomical variants such as:

hypoplastic 12th rib
unfused transverse process ossification centre

~~-<li>hypoplastic <a title="12th rib" href="/articles/twelfth-rib">12th rib</a>~~
+<li>hypoplastic <a href="/articles/twelfth-rib">12th rib</a>
~~-<li><a title="unfused transverse process ossification centre" href="/articles/unfused-transverse-process-ossification-centre">unfused transverse process ossification centre</a></li>~~
+<li><a href="/articles/unfused-transverse-process-ossification-centre">unfused transverse process ossification centre</a></li>

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Image 7 X-ray (Frontal) ( create )

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