Home    中文  
 
  • Search
  • lucene Search
  • Citation
  • Fig/Tab
  • Adv Search
Just Accepted  |  Current Issue  |  Archive  |  Featured Articles  |  Most Read  |  Most Download  |  Most Cited

Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition) ›› 2026, Vol. 12 ›› Issue (01): 25-30. doi: 10.3877/cma.j.issn.2096-0263.2026.01.004

• Spine • Previous Articles    

Clinical study of hoof-shaped ultrasonic osteotome-assisted posterior cervical expansive open-door laminoplasty for multilevel cervical spondylotic myelopathy

Yawei Li, Qiangqiang Pan, Zhenhui Zhang, Yingchao Zhou, Jinlu Wang, Qingde Wang, Wei Mei()   

  1. Department of Spinal Orthopedics, Zhengzhou Orthopedic Hospital, Zhengzhou 450000, China
  • Received:2025-10-25 Online:2026-02-05 Published:2026-03-30
  • Contact: Wei Mei

Abstract:

Objective

To evaluate the clinical value of a hoof-shaped ultrasonic bone curette in posterior cervical expansive open-door laminoplasty for multilevel cervical spondylotic myelopathy (CSM).

Methods

A retrospective cohort analysis was conducted on 150 patients with multilevel cervical spondylotic myelopathy treated at Zhengzhou Orthopedic Hospital from January 2021 to March 2025. Patients were divided into three groups based on surgical instruments used: Group A (hoof-shaped ultrasonic osteotome, n=50), Group B (flap-shaped ultrasonic osteotome, n=48), Group C (high-speed drill, n=52). The cohort included 84 males and 66 females, with a mean age of (53.6±5.4) years. Comparative analysis included intraoperative parameters (laminoplasty time, blood loss), pre- and postoperative 1-week/6-month Japanese Orthopaedic Association (JOA) scores and improvement rates, complication rates, and hinge bone healing rates at 3 months.

Results

Cutting efficiency:Group A demonstrated the shortest laminoplasty time [(29.8±5.5) min], significantly shorter than Group B [(38.4±7.9) min] and Group C [(52.7±9.1) min] (P<0.001). Intraoperative blood loss in Group A [(78.6±20.6) ml] was significantly lower than Groups B [(105.8±29.1) ml] and C [(134.6±35.7) ml] (P<0.001). Functional outcomes: Repeated-measures ANOVA showed no significant differences in JOA scores across groups at any time point, with no group-by-time interaction.Significant intragroup improvements were observed in all groups at each follow-up time point.Safety: C5 nerve root palsy rates: Group A (2%, 1/50), Group B (2.1%, 1/48), Group C (3.8%, 2/52) (P=0.582). Dural tear rate: 0% in Groups A/B vs. 7.7% in Group C (P=0.047).No significant differences in postoperative infection or new-onset neck pain (P>0.05). Hinge bone healing at 3 months: Group A (95.2%)>Group B (93.8%)>Group C (84.6%) (P=0.034).

Conclusion

All three instruments effectively performed laminoplasty, but the hoof-shaped ultrasonic osteotome demonstrated superior efficiency and safety compared to flap-shaped ultrasonic osteotomes and high-speed drills.

Key words: Cervical spondylotic myelopathy, Posterior cervical expansive open-door laminoplasty, Hoof-shaped ultrasonic osteotome, Perioperative management, Biomechanics

京ICP备07035254号-18
Copyright © Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition), All Rights Reserved.
Tel: 0311-88603818 E-mail: zhlngkykf@126.com
Powered by Beijing Magtech Co. Ltd