PURPOSE: @entity3799 has been reported with satisfactory short- and medium-term clinical results. However, the long-term clinical and radiographic outcomes are seldom reported. The purpose of this study was to compare the eight-year follow-up results in @entity1 who underwent Bryan disc arthroplasty with @entity1 received ACDF, and assess the incidence of @entity2736 ( @entity2736 ) and its effect on clinical outcome and mobility of the device. METHODS: Thirty-one @entity1 underwent Bryan disc arthroplasty, and 35 @entity1 underwent ACDF were included in the study. The Japanese Orthopedic Association (JOA) scores, @entity717 ( @entity717 ), visual analogue scale (VAS) of neck and arm @entity158 , and the radiographs were used to evaluate the outcomes. The @entity2736 ( @entity2736 ) was determined by CT scan and was classified into three subgroups to compare the related effect. @entity528 ( @entity528 ) was also observed. RESULTS: At final follow-up, there were no significant differences in JOA scores between two groups, but the improvement in @entity717 and neck or arm VAS were significantly greater in the Bryan disc cohort. The range of motion at the index level was 7.0   in Bryan group, while 100  % bone fusion were achieved in ACDF group. @entity2736 was observed in 18 (51.4  %) levels. There were more restricted movement of the prosthesis and slight higher rate of @entity158 in @entity1 with severe- @entity2736 (grade III and IV). Fourteen (28.6  %) levels developed @entity528 in Bryan group, which was significantly lower than that (58.6  %) in ACDF group. CONCLUSIONS: At eight year follow-up, the clinical and radiographic outcomes of @entity3799 compared favorably to those of ACDF. It avoided accelerated adjacent segment degeneration by preserving motion. However, severe @entity2736 restricted the ROM of the index levels and maybe associated with post-operative @entity158 .

Clinical and radiological analysis of XXXX : eight-year follow-up results compared with anterior cervical discectomy and fusion.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity3799 :: ('MESH:D002575', 'Disease') :: ['Bryan cervical disc arthroplasty'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain', 'axial pain'] @entity2736 :: ('MESH:D009999', 'Disease') :: ['HO', 'heterotopic ossification'] @entity717 :: ('MESH:D009069', 'Disease') :: ['NDI', 'neck disability index'] @entity528 :: ('MESH:D009410', 'Disease') :: ['Adjacent segment degeneration', 'ASD']
@entity3799 :: (MESH:D002575,Disease) :: ['Bryan cervical disc arthroplasty']
