郝 定 均(Hao Dingjun，Dept Spiine Surg，Xi’an Red Cross Hosp，Xi’an 710054)…∥Chin J Orthop.－2011，31(1).－18～23

Mid-term outcomes of Bryan cervical disc arthroplasty versus anterior cervical discectomy and fusion for cervicalspondylopathy

郝 定 均(Hao Dingjun，Dept Spiine Surg，Xi’an Red Cross Hosp，Xi’an 710054)…∥Chin J Orthop.－2011，31(1).－18～23

ObjectiveTo compare the clinical outcomes of Bryan disc replacement with anterior cervical discectomy and fusion(ACDF)in patients with cervical spondylopathy.MethodsSixteen patients underwent Bryan cervical disc replacement(A group)，and 35 patients underwent traditional ACDF(B group)were included in the study.Patients were followed up at regular intervals.The JOA score，SF-36，neck disability index(NDI)score and the dynamic flexion-extension radiographs were used to evaluated the outcomes.ResultsAll the patients were followed up for more than 6 years(mean，73.5 months).There were no severe adverse events in both groups.In A group，there were no differences between postoperative and preoperative mobility of surgical segments(P＞0.05).All patients obtained bone fusions 6 month after surgery in group B.In both groups，the clinical symptoms relieved obviously after surgery.The postoperative scores of the JOA，SF-36 and NDI significantly improved compared with those of preoperative ones(P ＜0.05).In B group，range of motion(ROM)was significantly decreased postoperatively(P ＜ 0.01);in A group，there were no significant differences between postoperative and preoperative ROM(P ＞0.05).The difference between two groups regarding ROM was noted(P ＜0.05).ConclusionThe mid-term outcomes of Bryan cervical arthroplasty are satisfied.And cervical arthroplasty which can maintain mobility of segment，and decrease incidence of postoperative neck axial symptoms is a viable alternative to cervical spondylopathy.18 refs，2 figs，4 tabs.

(Authors)