Usefulness of K-line in predicting prognosis of laminoplasty for cervical spondylotic myelopathy

Autor: Terumasa Ikeda, Hiroshi Miyamoto, Masao Akagi
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: BMC Musculoskeletal Disorders, Vol 24, Iss 1, Pp 1-6 (2023)
Druh dokumentu: article
ISSN: 1471-2474
DOI: 10.1186/s12891-023-06214-2
Popis: Abstract Background K-line is widely recognized as a useful index for evaluating cervical alignment and the size of the cervical ossification at the posterior longitudinal ligament (OPLL). The purpose of this study was to investigate whether the K-line could be a useful clinical tool for predicting the prognosis of laminoplasty (LP) for cervical spondylotic myelopathy (CSM). Methods Adult CSM patients scheduled for cervical LP were recruited for this study. C2-7 angle, local kyphosis angle, and K-line was evaluated by T2-weighted sagittal magnetic resonance imaging (MRI). Clinical findings were evaluated by the JOA score and the recovery rate. Clinical and radiological findings were evaluated preoperation and final follow-up. Patients were grouped into K-line ( +) and K-line (-). Patients with Kline (-) were further divided into two sub-groups: disc type (anterior cord compression due to disc protrusion with kyphosis) and osseous type (due to osseous structure such as osteophyte). Results Sixty-eight patients were included in the analysis. The recovery rate of K-line (-) group (n = 11,19.4%) was significantly worse than that of K-line ( +) group (n = 57, 50.6%, p
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