Opening Side of Unilateral Open-Door Laminoplasty Does Not Impact Improvement in Arm Pain or Space Available for the Spinal Cord

Author:

Merrill Robert K.1,Subramanian Tejas12ORCID,Asada Tomoyuki1,Singh Sumedha1,Lu Amy12,Korsun Max1ORCID,Maayan Omri12,Akosman Izzet12ORCID,Dowdell James1,Huang Russel C.12ORCID,Iyer Sravisht12,Albert Todd J.12,Lovecchio Francis1,Kim Han Jo12

Affiliation:

1. Department of Spine Surgery, Hospital for Special Surgery, New York, NY 10021, USA

2. Weill Cornell Medicine, New York, NY 10021, USA

Abstract

Background/Objectives: There exists limited data guiding open-door laminoplasty. The objective of this study is to determine if open-door laminoplasty affects radiographic decompression or arm pain outcomes. Methods: Adult patients who underwent unilateral open-door laminoplasty cervical myelopathy were included. The side opened was dependent on surgeon discretion. We recorded preoperative side of symptoms, side of radiographic compression, arm pain scores, and canal diameter. Patients with open-side ipsilateral or contralateral to dominant symptoms or compression were compared to determine any effect on arm pain outcomes or spinal canal diameter. If the symptoms were equal bilaterally, patients were neutral. Results: A total of 167 patients were included, with an average age of 64 ± 11 years and average follow-up time of 64.5 ± 72 weeks. The average preoperative arm pain visual analog score (VAS) was 2.13 ± 2.86, and the average arm VAS after 6 months was 1.52 ± 2.68. For dominant symptoms, the ipsilateral, contralateral, and neutral groups had a significant improvement in arm VAS at >6 months postoperatively. For dominant compression, the ipsilateral and contralateral groups had a significant improvement in both arm VASs and canal diameter at >6 months postoperatively. No differences were seen between groups for either. We observed a significant correlation between size of plate and change in canal diameter; however, no differences were noted for arm pain. Conclusions: Laminoplasty may be effective in addressing radicular arm pain by increasing the spinal canal’s diameter and space available for the cord. The laterality of open-door laminoplasty did not affect arm pain improvement or canal expansion.

Funder

National Center for Advancing Translational Science of the National Institute of Health

Publisher

MDPI AG

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