Tag Archives: Zygapophyseal

Radiofrequency Neurotomy for Z-joint Pain

Radiofrequency neurotomy interrupts the nociceptive afferent from the Z-joint by thermally coagulating the two medial branches that innervate a given Z-joint. The exposed terminal portion of radiofrequency probe delivers heat at 80°C. For each Z-joint (except the C2-3 joint, which is innervated by the third occipital nerve), two medial branches need to be ablated. Indications […]

Zygapophyseal Joint Injection

Introduction The prevalence of lumbar zygapophyseal joint (Z-joint) pain has been reported to be approximately 6% in a primary care setting (94). However, in a tertiary spine center, lumbar Z-joint pain has been reported to range from 15% in younger individuals (96) to 40% in older populations (98) with chronic low back pain. In individuals […]