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Intervertebral disc arthroplasty
Artificial disc replacement (ADR), or total disc replacement (TDR), is a type of arthroplasty. It is a surgical procedure in which degenerated intervertebral discs in the spinal column are replaced with artificial devices in the lumbar (lower) or cervical (upper) spine. The procedure is used to treat chronic, severe low back pain and cervical pain resulting from degenerative disc disease. Cervical disc replacement is also an alternative intervention for symptomatic disc herniation with associated arm and hand symptoms.
Artificial disc replacement has been developed as an alternative to spinal fusion, with the goal of pain reduction or elimination, while still allowing motion throughout the spine. Another possible benefit is the prevention of premature breakdown in adjacent levels of the spine, a potential risk in fusion surgeries.
==Regulation ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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