Fig. 5From: Subsidence following cervical discectomy and implant-to-bone ratioReceiver Operating Characteristics (ROR) for the surface ratio and the presence of subsidence after 12 months. Area under curve, AUC = 0.71 (95% CI 0.606–0.815). Cut-off point was determined using Youden’s J statistic, which maximises sensitivity and specificityBack to article page