Mok Jung Kee, Vaishnav Avani S, Chaudhary Chirag, Alluri R Kiran, Lee Ryan, Urakawa Hikari, Sato Kosuke, Chen Darren A, Gang Catherine Himo, Huang Russel, Albert Todd J, Qureshi Sheeraz A
Weill Cornell Medical College, New York, NY, USA.
Hospital for Special Surgery, New York, NY, USA.
Neurospine. 2020 Sep;17(3):588-602. doi: 10.14245/ns.2040398.199. Epub 2020 Sep 30.
OBJECTIVE: To evaluate outcomes of cervical disc replacement (CDR) in patients with nonlordotic alignment. METHODS: Patients who underwent CDR were retrospectively reviewed and divided into 3 cohorts: (1) neutral/lordotic segmental and C2-7 Cobb angle (L), (2) nonlordotic segmental Cobb angle, lordotic C2-7 Cobb angle (NL-S), and (3) nonlordotic segmental and C2-7 Cobb angle (NL-SC). Radiographic and patient-reported outcomes (PROMs) were compared. RESULTS: One-hundred five patients were included (L: 37, NL-S: 30, NL-SC: 38). A significant gain in segmental lordosis was seen in all cohorts at < 6 months (L: -1.90° [p = 0.007]; NL-S: -5.16° [p < 0.0001]; NL-SC: -6.00° [p < 0.0001]) and ≥ 6 months (L: -2.07° [p = 0.031; NL-S: -6.04° [p < 0.0001]; NL-SC: -6.74° [p < 0.0001]), with greater lordosis generated in preoperatively nonlordotic cohorts (p < 0.0001). C2-7 lordosis improved in the preoperatively nonlordotic cohort (NL-SC: 8.04°) at follow-up of < 6 months (-4.15°, p = 0.003) and ≥ 6 months (-6.40°, p = 0.003), but not enough to create lordotic alignment (< 6 months: 3.89°; ≥ 6 months: 4.06°). All cohorts showed improvement in Neck Disability Index, visual analogue scale (VAS) neck, and VAS arm, without significant difference among groups in the amount of improvement ( ≥ 6-month PROMs follow-up = 69%). CONCLUSION: In patients without major kyphotic deformity, CDR has the potential to generate and maintain lordosis and improve PROMs in the short-term, and can be an effective treatment option for patients with nonlordotic alignment.
目的:评估非前凸排列患者颈椎间盘置换术(CDR)的疗效。 方法:对接受CDR的患者进行回顾性分析,并分为3组:(1)中立/前凸节段及C2-7 Cobb角(L)组;(2)非前凸节段Cobb角、前凸C2-7 Cobb角(NL-S)组;(3)非前凸节段及C2-7 Cobb角(NL-SC)组。比较影像学和患者报告结局(PROMs)。 结果:共纳入105例患者(L组:37例;NL-S组:30例;NL-SC组:38例)。所有组在术后<6个月(L组:-1.90°[p = 0.007];NL-S组:-5.16°[p < 0.0001];NL-SC组:-6.00°[p < 0.0001])及≥6个月(L组:-2.07°[p = 0.031];NL-S组:-6.04°[p < 0.0001];NL-SC组:-6.74°[p < 0.0001])时节段前凸均显著增加,术前非前凸组增加更明显(p < 0.0001)。术前非前凸组(NL-SC组)在术后<6个月(-4.15°,p = 0.003)及≥6个月(-6.40°,p = 0.003)时C2-7前凸有所改善,但不足以形成前凸排列(<6个月:3.89°;≥6个月:4.06°)。所有组的颈部功能障碍指数、颈部视觉模拟评分(VAS)及上肢VAS均有改善,各组改善程度无显著差异(≥6个月PROMs随访时改善率 = 69%)。 结论:对于无严重后凸畸形的患者,CDR在短期内有产生并维持前凸及改善PROMs的潜力,可作为非前凸排列患者的一种有效治疗选择。
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