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[[File:Facet Joints.png|thumb|Illustration highlighting facet joint articulation between two vertebrae]]
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The '''facet joints''', (or '''zygapophysial joints''', '''zygapophyseal''', '''apophyseal''', or '''Z-joints''') are a set of [[synovial joint|synovial]], [[plane joint]]s between the [[articular processes]] of two adjacent vertebrae. There are two facet joints in each [[functional spinal unit|spinal motion segment]] and each facet joint is innervated by the [[Meningeal branches of spinal nerve|recurrent meningeal nerves.]]
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[[File:Blausen 0391 FacetJointInjection.png|thumb|Illustration depicting facet joint block]]
Conservative treatment of facet joint arthritis involves [[chiropractic]], [[physical therapy]], or [[osteopathic medicine]] with correction of [[Neutral spine|posture]] and biomechanics being the key. Acupuncture and Chinese medicine can provide pain relief as well as increasing blood flow to the tissues to promote healing.{{cn}} More advanced cases involving severe inflammatory response in the Z-joint, not unlike a swollen [[Knee arthritis|arthritic knee]]. Steroid injections may provide temporary pain relief. This is typically performed under [[Fluoroscopy|image guidance]] to ensure accuracy given the complex shape and deep location of the facet.<ref>[http://www.knowyourback.org/Pages/Treatments/InjectionTreatments/LZJ_Injections.aspx NASS on facet joint injections]</ref>
==Etymology==
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