Arthrodesis is a surgical procedure that stiffens a joint or joins spinal vertebrae. Arthrodesis means the fixation of a joint. The suffix-desis means surgical fixation of..Joint fusion or arthrodesis is a method used for pain relief, regain stability and strength. The bones are aligned in the most functional position, but lose their natural motion.rthrodesis is a surgical procedure that stiffens a joint or joins spinal vertebrae. Arthrodesis means the fixation of a joint. The suffix-desis means surgical fixation of..