An extension teardrop fracture typically occurs due to forced extension of the neck with resulting avulsion of the anteroinferior corner of the vertebral body. Extension injuries are stable in flexion, and unstable in extension as the anterior longitudinal ligament is disrupted. Extension teardrop is not as severe as it's counterpart, the flexion teardrop fracture.
- anterior-inferior corner fracture
- avulsion fracture from attachment of the anterior longitudinal ligament to the inferior corner of the vertebral body
- the fragment is triangular in shape reminiscent of a teardrop
- vertical height of fragment is equal to or greater than width
- in older patients C2 is commonly affected due to degenerative ankylosis of lower levels
- widening of the interspinous distance at the same level or the level above
- widening or mild rotatory subluxation of facet joints.
- slight listhesis may be present
Additional fractures are common and thus CT scan is indicated in all cases.
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- 1. Rao SK, Wasyliw C, Nunez DB. Spectrum of imaging findings in hyperextension injuries of the neck. Radiographics. 25 (5): 1239-54. doi:10.1148/rg.255045162 - Pubmed citation
- 2. Torretti JA, Sengupta DK. Cervical spine trauma. Indian J Orthop. 2007;41 (4): 255-67. doi:10.4103/0019-5413.36985 - Free text at pubmed - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Extension teardrop fracture||✗|
|Hyperextension teardrop fracture||✗|
|Hyper extension teardrop fractures||✗|
|Extension teardrop fractures||✗|