Wang WX, Zhao YB, Lu XD, et al. - Researchers designed a retrospective analysis of 33 individuals to examine the extension of expansive open-door laminoplasty (EODL) to C1 and C2 for the treatment of cervical spinal stenosis of the upper cervical spine and its impacts on cervical sagittal parameters. This study was performed between February 2013 and December 2015 presenting the individual with symptoms of cervical spondylosis myelopathy (CSM) and ossification in the posterior longitudinal ligament (OPLL) of the upper cervical spine. Moreover, the fluctuations in the C0–2 Cobb angle, C1–2 Cobb angle, C2–7 Cobb angle, C2–7 SVA, and T1-Slope in lateral x-rays of the cervical spine were measured before, instantly after, and 1 year after the operation. The sagittal parameters of individuals who underwent EODL extended to C1 and C2 involved loss of cervical curvature, improved cervical anteversion and compensatory posterior extension of the upper cervical spine to maintain visual balance in the field of vision. Nevertheless, the alterations in cervical spine parameters were far less important than the alarm thresholds recorded in previous studies. For the treatment of individuals with spinal canal stenosis, they assume that EODL extended to C1 and C2 in the upper cervical spine is a reasonable and safe procedure with excellent results.