Objective. To assess the safety and efficacy of cervical disc arthroplasty using a new arthroplasty device at 24-months follow-up.
目的:通过24个月的随访,评估使用新型关节成形术设备的颈间盘成形术的安全性与有效性。
2
So at least you have the clinical study that got the drug or device approved and at least you would have followup studies in the registries to look at their real world benefit and safety.