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Purpose <p>To investigate the safety, efficacy, and radiological outcomes of posterior unilateral approach with unilateral pedicle screw + contralateral laminar screw + lateral mass reconstruction (UPS + CLS+LM) for cervical dumbbell tumors in a consecutive case series.</p> Methods <p>A single-center retrospective study was performed on 10 consecutive patients with cervical dumbbell tumors treated with UPS + CLS+LM reconstruction between April 2018 and April 2025. Perioperative parameters (operative time, estimated blood loss [EBL]), clinical outcomes (Japanese Orthopaedic Association [JOA] score, neurological improvement rate), and radiographic outcomes (gross total resection [GTR] rate, bony fusion rate, implant-related complications) were collected and analyzed. Paired t-test was applied to compare preoperative and postoperative JOA scores.</p> Results <p>All 10 patients achieved 100% GTR and 100% solid bony fusion, with a mean follow-up of 31.70 ± 26.80 months. The mean <b>17-point</b> JOA score improved significantly from 13.60 ± 1.35 preoperatively to 16.70 ± 0.67 at final follow-up (t = − 9.86, <i>P</i> &lt; 0.0001), with a mean neurological improvement rate of 88.9%. No implant failure, cervical segmental instability, or tumor recurrence was detected in this case series.</p> Conclusion <p>The UPS + CLS+LM technique appears safe and effective for unilateral cervical dumbbell tumors in this case series. It achieves complete tumor resection and reliable cervical stability, preserves the contralateral musculoligamentous complex, minimizes iatrogenic injury, and shows favorable clinical value for unilateral cervical dumbbell tumors in this case series.</p>

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Posterior unilateral approach with unilateral pedicle and contralateral laminar screw combined with lateral mass reconstruction for cervical dumbbell tumors: case series and technical note

  • 期刊论文

  • 发表日期：

    2026年5月30日

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  • XuanHang Zhang,
  • Yu Wang,
  • Jianying Zheng,
  • Jian Xiong,
  • Jiahao Xie,
  • Panjie Xu,
  • Junjie Yao,
  • Kunqi Li,
  • Hui Jiang,
  • Wei Ji

摘要

Purpose

To investigate the safety, efficacy, and radiological outcomes of posterior unilateral approach with unilateral pedicle screw + contralateral laminar screw + lateral mass reconstruction (UPS + CLS+LM) for cervical dumbbell tumors in a consecutive case series.

Methods

A single-center retrospective study was performed on 10 consecutive patients with cervical dumbbell tumors treated with UPS + CLS+LM reconstruction between April 2018 and April 2025. Perioperative parameters (operative time, estimated blood loss [EBL]), clinical outcomes (Japanese Orthopaedic Association [JOA] score, neurological improvement rate), and radiographic outcomes (gross total resection [GTR] rate, bony fusion rate, implant-related complications) were collected and analyzed. Paired t-test was applied to compare preoperative and postoperative JOA scores.

Results

All 10 patients achieved 100% GTR and 100% solid bony fusion, with a mean follow-up of 31.70 ± 26.80 months. The mean 17-point JOA score improved significantly from 13.60 ± 1.35 preoperatively to 16.70 ± 0.67 at final follow-up (t = − 9.86, P < 0.0001), with a mean neurological improvement rate of 88.9%. No implant failure, cervical segmental instability, or tumor recurrence was detected in this case series.

Conclusion

The UPS + CLS+LM technique appears safe and effective for unilateral cervical dumbbell tumors in this case series. It achieves complete tumor resection and reliable cervical stability, preserves the contralateral musculoligamentous complex, minimizes iatrogenic injury, and shows favorable clinical value for unilateral cervical dumbbell tumors in this case series.