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This strengthening is important to improve an individual's gait.Instruction in the use of an assistive device such as crutches and afterwards a cane may be required shortly after surgery, while the individual progresses to independent walking.For both techniques, the joint must be kept immobile for a defined period of time to allow the fusion and healing to take place in and around the previous joint. Anterior lumbar fusion in the spine involves removing the offending intervertebral disc and placing a bone graft between the vertebrae, which will then fuse together.In a posterolateral spinal fusion, the disc is not disturbed.Factors that might influence the length of disability include the joint involved, the underlying disease process, the individual's tolerance of the resulting stiffness, and the individual's ability to modify work requirements after disability.The time to complete healing or fusion varies from 3 months to 9 months, and at least some degree of modified activities will be present until the bone fusion is solidly healed.Two different techniques may be used to fuse the two ends of the bones that originally formed the joint.
Arthrodesis is performed to control pain, to slow disease progression, to provide stability to a joint that has been damaged by arthritis or muscle weakness, and to correct deformity.By the time afflicted individuals present for surgery, they usually have little motion left in their arthritic joints and have adapted to living without the motion.Most of them are, therefore, grateful for the reduction in pain that an arthrodesis can provide.After knee surgery, the knee has stability, but the lack of any motion in the knee makes activities such as entering a car difficult.The results for lower back fusion (lumbar spine) are less promising if appropriate indications for patient selection are not followed.
Relative to outcome, arthrodesis is performed to enable individuals to return to improved productivity.