Medical and radiological evaluation of Bryan cervical disc arthroplasty: eight-year follow-up outcomes in contrast with anterior cervical discectomy and fusion.
Int Orthop. 2016 Jun;40(6):1197-203
Authors: Lei T, Liu Y, Wang H, Xu J, Ma Q, Wang L, Shen Y
PURPOSE: Bryan cervical disc arthroplasty has been reported with passable short- and medium-term medical outcomes. Nonetheless, the long-term medical and radiographic outcomes are seldom reported. The aim of this research was to check the eight-year follow-up leads to sufferers who underwent Bryan disc arthroplasty with sufferers acquired ACDF, and assess the incidence of heterotopic ossification (HO) and its impact on medical final result and mobility of the machine.
METHODS: Thirty-one sufferers underwent Bryan disc arthroplasty, and 35 sufferers underwent ACDF had been included within the research. The Japanese Orthopedic Affiliation (JOA) scores, neck incapacity index (NDI), visible analogue scale (VAS) of neck and arm ache, and the radiographs had been used to judge the outcomes. The heterotopic ossification (HO) was decided by CT scan and was labeled into three subgroups to check the associated impact. Adjoining section degeneration (ASD) was additionally noticed.
RESULTS: At last follow-up, there have been no important variations in JOA scores between two teams, however the enchancment in NDI and neck or arm VAS had been considerably better within the Bryan disc cohort. The vary of movement on the index stage was 7.zero° in Bryan group, whereas 100 % bone fusion had been achieved in ACDF group. HO was noticed in 18 (51.four %) ranges. There have been extra restricted motion of the prosthesis and slight larger fee of axial ache in sufferers with severe-HO (grade III and IV). Fourteen (28.6 %) ranges developed ASD in Bryan group, which was considerably decrease than that (58.6 %) in ACDF group.
CONCLUSIONS: At eight yr follow-up, the medical and radiographic outcomes of Bryan cervical disc arthroplasty in contrast favorably to these of ACDF. It averted accelerated adjoining section degeneration by preserving movement. Nonetheless, extreme HO restricted the ROM of the index ranges and possibly related to post-operative axial ache.
PMID: 26744166 [PubMed – indexed for MEDLINE]