Similar clinical outcomes seen with hybrid-CDA, ACDF for patients with congenital cervical stenosis

Investigators of this study found in patients with myelopathy due to congenital cervical stenosis, hybrid-cervical disc arthroplasty had similar clinical improvements as 3-level anterior cervical discectomy and fusion.

Researchers retrospectively reviewed 37 patients who underwent 3-level anterior cervical discectomy. Twenty of these patients comprised a hybrid-cervical disc arthroplasty group and received CDA and 1-level anterior cervical discectomy and fusion (ACDF). The remaining 17 patients received 3-level ACDF. The mean follow-up period was 2.37 years. To measure clinical assessment, researchers used VAS for neck pain and arm pain, the Japanese Orthopaedic Association scores and Nurick grades. They used dynamic radiographs to evaluate range of motion (ROM).

Findings showed at the 2-year follow-up similar improvements in both patients in the hybrid-CDA group and patients in the ACDF group. Investigators noted significant improvements following either surgery type in patients with 3-level stenosis. At each of the follow-up visits postoperatively, investigators did not see any significant differences between patients treated with hybrid-CDA and ACDF.

According to researchers, both groups had similar preoperative ROM over the operated subaxial levels; however, postoperatively they saw significantly greater ROM in patients in the hybrid-CDA group compared with those in the ACDF group. Both groups had similarly low complications, adverse events and reoperations. – by Monica Jaramillo

Disclosures: The researchers report no relevant financial disclosures.

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Source:

Chang P, et al. J Neurosurg Spine. 2017;doi:10.3171/2016.10.SPINE16317.