F

facet block

an injetion used to numb a spinal joint or facet

facet joints

the segmental joints at the back of the spine on both sides between the lamina

flexion

bending forward

flexion/extension X-Ray

X-rays taken with the body flexed forwards and with the body extended backwards

foraminotmy

surgery to open the spinal foramen increasing the space for a nerve root as it passes out of the spinal canal

fusion

causing two bones to grow together into one