Locked facet joint
Citation, DOI, disclosures and article data
Citation:
Goel A, Saber M, Baba Y, et al. Locked facet joint. Reference article, Radiopaedia.org (Accessed on 14 Feb 2025) https://doi.org/10.53347/rID-35404
rID:
35404
Article created:
5 Apr 2015,
Ayush Goel
Disclosures:
At the time the article was created Ayush Goel had no recorded disclosures.
View Ayush Goel's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Mohamed Saber had no recorded disclosures.
View Mohamed Saber's current disclosures
Revisions:
8 times, by
6 contributors -
see full revision history and disclosures
Systems:
Sections:
Tags:
Synonyms:
- Jumped facet
- Locked facet
Locked facet joint is a type of facet joint dislocation that results from jumping of the inferior articular process over the superior articular process of the vertebra below and becomes locked in the position.
It can be unilateral or bilateral.
Radiographic features
Plain radiograph
The tip of the inferior articular process is seen anterior to the superior articular process of the vertebra below.
CT
Shows the radiographic findings in more details. The naked facet sign (a.k.a. reverse hamburger bun sign) sometimes can be seen on an axial scan.
MRI
Can show ligamentous injuries apart from the dislocation.
Quiz questions
{"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":35404,"questionManager":null,"mcqUrl":"https://radiopaedia.org/articles/locked-facet-joint/questions/1822?iframe=true\u0026lang=us"}
References
- 1. O'Shaughnessy J, Grenier JM, Stern PJ. A delayed diagnosis of bilateral facet dislocation of the cervical spine: a case report. J Can Chiropr Assoc. 2014;58 (1): 45-51. Free text at pubmed - Pubmed citation
- 2. Piccirilli M, Liberati C, Santoro G et-al. Cervical Post-traumatic Unilateral Locked Facets: Clinical, Radiological and Surgical Remarks on a Series of 33 Patients. J Spinal Disord Tech. 2015; . doi:10.1097/BSD.0b013e3182870c3f - Pubmed citation
- 3. Sim E, Schwarz N. Unilateral locking of cervical facet joints. Frequency and value of roentgenologic signs. Unfallchirurg. 1993;96 (10): 551-5. Pubmed citation
Incoming Links
Articles:
Cases:
- Bilateral locked facet joints
- Unilateral facet joint fracture dislocation
- Fracture dislocation C5/6
- Fracture dislocation C4/5
- Cervical spine fracture with dislocation
- Cervical spine fracture with dislocation
- Cervical spine fracture with dislocation and locked facets
- Fracture-dislocation with bilateral locked facets
- Cervical unilateral facet joint dislocation
- Cervical fracture and dislocation with locked facet
- Jumped facet
- Fracture dislocation C6/7
Multiple choice questions:
Related articles: Spinal trauma
-
spinal fractures
- morphology
- fractures by location
- cervical spine fracture
- thoracolumbar spine fracture
- sacral fracture
- classifications
- AO spine classification systems
- three column concept of spinal fractures (Denis classification)
-
cervical spine fracture classification systems
- upper cervical spine
- AO Spine classification of upper cervical injuries
- occipital condyle and occipital cervical junction
- atlas (C1) and C1-2 joint
- axis (C2) and C2-3 joint
- Roy-Camille classification (dens)
- Anderson and D'Alonzo classification (dens)
- Levine and Edwards classification (pars interarticularis)
- subaxial cervical spine
- upper cervical spine
- thoracolumbar spinal fracture classification systems
- classifications of sacral fractures
- facet dislocation
- listhesis