Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (30): 4863-4869.doi: 10.12307/2021.275

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Long-term survival rate and reoperation of Wallis interspinous dynamic stabilization system for treatment of lumbar degenerative disc disease

Gu Honglin, Zheng Xiaoqing, Liang Changxiang, Zeng Shixing, Zhan Shiqiang, Chang Yunbing   

  1. Department of Spine Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
  • Received:2021-02-09 Revised:2021-02-19 Accepted:2021-03-18 Online:2021-10-28 Published:2021-07-29
  • Contact: Chang Yunbing, MD, Chief physician, Department of Spine Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
  • About author:Gu Honglin, MD, Attending physician, Department of Spine Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
  • Supported by:
    Guangdong Science and Technology Plan Project, No. 2011B061300036 (to ZSQ); Guangdong Provincial Traditional Chinese Medicine Bureau Scientific Research Project, No. 20212001 (to GHL)

Abstract: BACKGROUND: Wallis interspinous dynamic stabilization system has been used in China for more than 10 years, but its long-term survivorship and reoperation rate are rarely reported.
OBJECTIVE: To observe the long-term efficacy, complication rate, reoperation rate and survival rate of Wallis interspinous process dynamic stabilization system in the treatment of lumbar degenerative disc disease.
METHODS:  126 patients with lumbar disc degenerative disease who underwent posterior decompression or discectomy + Wallis fixation in Guangdong Provincial People’s Hospital from May 2008 to March 2013 followed up for more than 7 years were retrospectively selected. Indications, preoperative and postoperative Japanese Orthopedic Association, Oswestry disability index, visual analogue scale score, complications, reoperation, and device survival rate were evaluated.  
RESULTS AND CONCLUSION: (1) A total of 103 cases completed follow-up, with a mean value of (124.43±11.44) months. Of 103 patients, 9 cases were diagnosed as lumbar stenosis, 46 cases as lumbar disc herniation, 41 cases as lumbar stenosis combined with lumbar disc herniation, and 7 cases as spondylolisthesis. (2) Japanese Orthopedic Association, Oswestry disability index, visual analogue scale scores at last follow-up were better than those before surgery (P < 0.05). (3) Overall complication rate was 14.5% (15/103), including prosthesis burst, spinous process fracture, recurrence of surgical or adjacent disc herniation, wound infection and recurrent low back pain. The reoperation rate was 7.8% (8/103). (4) The 5-year and 10-year survival rates were 98.1% (101/103) and 97.1% (100/103). (5) Compared with patients with other diseases, patients with lumbar disc herniation had the highest rate of complication (21.7%, 10/46) and reoperation rate (13%, 6/46), and the lowest 5-year 95.7% (44/46) and 10-year 93.5% (43/46) survival rates. (6) Wallis implantation can achieve satisfactory long-term survival rate and clinical outcomes in the treatment of lumbar disc degenerative diseases. However, complication rate and reoperation rate in patients with lumbar disc herniation are higher, and the survival rate is lower. Thus, Wallis implant should be used cautiously in patients with this diagnosis.

Key words: orthopedic implant, spinal implant, interspinous dynamic stabilization system, Wallis, lumbar disc degenerative disease, lumbar disc herniation, survival rate, reoperation, retrospective study

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