Lee Jung Hwan, Lee Youn Joo, Chang Min Cheol, Lee Jun Ho
Department of Rehabilitation Medicine, Namdarun Rehabilitation Clinic, Yongin, Korea.
Chadwick International School, Incheon, Korea.
Neurospine. 2023 Sep;20(3):1047-1060. doi: 10.14245/ns.2346498.249. Epub 2023 Sep 30.
OBJECTIVE: Cervical myelopathy (CM) describes the compressive cervical spinal cord state, often accompanied by serious clinical condition, by herniated disc or hypertrophied spurs or ligament. Anterior cervical discectomy and fusion (ACDF) has been frequently employed as conventional surgical solution for this CM despite its inherent biomechanical handicap. Alternatively, an artificial disc replacement (ADR) preserves cervical motion while still decompressing the spinal canal and neural foramen. This analysis elaborated to clarify the potential benefits of ADR application to CM over ACDF from the conglomerated results of the past references. METHODS: A literature search was performed using MEDLINE, Embase, Cochrane review, and KMbase databases from the studies published until March 2023. Six studies (3 randomized controlled study [RCTs] and 3 non-RCTs) were included in a qualitative and quantitative synthesis. Data were extracted and analyzed using a random effects model to obtain effect size and its statistical significance. Quality assessment and evidence level were established in accordance with the GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology. RESULTS: Among 6 studies, 2 studies showed that ADR group achieved significantly better clinical improvement than the ACDF group, while the rest 4 studies revealed no significant difference. A meta-analysis showed better clinical outcomes with or without statistical significance. The level of evidence was low because of inconsistency and imprecision. CONCLUSION: ADR was superior or at least, not inferior to ACDF in terms of functional recovery. However, its application to the CM patients is merely empowered with weak strength due to low level of evidence.
目的:脊髓型颈椎病(CM)描述了由椎间盘突出、骨质增生或韧带肥大引起的压迫性颈脊髓状态,常伴有严重的临床症状。尽管存在固有的生物力学缺陷,但颈椎前路椎间盘切除融合术(ACDF)一直是治疗这种脊髓型颈椎病的常用传统手术方法。相比之下,人工椎间盘置换术(ADR)在保留颈椎活动度的同时,仍能对椎管和神经孔进行减压。本分析旨在通过以往参考文献的综合结果,阐明ADR应用于脊髓型颈椎病相对于ACDF的潜在益处。 方法:使用MEDLINE、Embase、Cochrane综述和KMbase数据库对截至2023年3月发表的研究进行文献检索。六项研究(3项随机对照试验[RCT]和3项非RCT)纳入定性和定量综合分析。使用随机效应模型提取和分析数据,以获得效应大小及其统计学意义。根据GRADE(推荐分级评估、制定和评价)方法确定质量评估和证据水平。 结果:在6项研究中,2项研究表明ADR组的临床改善明显优于ACDF组,而其余4项研究未显示出显著差异。荟萃分析显示临床结果较好,无论有无统计学意义。由于结果不一致和不精确,证据水平较低。 结论:在功能恢复方面,ADR优于或至少不劣于ACDF。然而,由于证据水平较低,其在脊髓型颈椎病患者中的应用仅具有较弱的说服力。
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