The cervical facet joint has been identified as the source of neck pain in up to 60% of the cases , with the C6/C7 facet joint being particularly susceptible to injury during painful mechanical neck injuries . The facet joint is innervated by both mechanoreceptors and nociceptors (i.e. pain receptors) [3,4]. Both receptor types respond to manipulation of the facet joint and afferent activation is related to the magnitude of joint loading . Also, tensile stretch of the capsular ligament in vivo to magnitudes of strain simulating those during neck injury also produces sustained behavioral sensitivity (pain) and upregulates proteins involved in nociception . Although anatomic and biomechanical studies suggest that facet capsule loading has a role in the development of pain, the relationship between capsule tension, the joint’s innervation, and the production of pain is still unclear.
- Bioengineering Division
Pain Subsequent to Mechanical Loading of the Facet Capsular Ligament Depends on Encoding by Afferents in the Spinal Facet Joint
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Weisshaar, CL, Kras, JV, Tanaka, K, & Winkelstein, BA. "Pain Subsequent to Mechanical Loading of the Facet Capsular Ligament Depends on Encoding by Afferents in the Spinal Facet Joint." Proceedings of the ASME 2012 Summer Bioengineering Conference. ASME 2012 Summer Bioengineering Conference, Parts A and B. Fajardo, Puerto Rico, USA. June 20–23, 2012. pp. 653-654. ASME. https://doi.org/10.1115/SBC2012-80456
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