Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (22): 3450-3457.doi: 10.3969/j.issn.2095-4344.3180

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How does bone cement dispersion affect the early outcome of percutaneous vertebroplasty

Feng Guancheng, Fang Jianming, Lü Haoran, Zhang Dongsheng, Wei Jiadong, Yu Bingbing   

  1. Department of Orthopedics, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510700, Guangdong Province, China
  • Received:2020-05-20 Revised:2020-05-22 Accepted:2020-07-09 Online:2021-08-08 Published:2021-01-19
  • Contact: Lü Haoran, MD, Associate professor, Chief physician, Master’s supervisor, Department of Orthopedics, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510700, Guangdong Province, China
  • About author:Feng Guancheng, Master candidate, Physician, Department of Orthopedics, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510700, Guangdong Province, China
  • Supported by:
    the Science and Technology Project of Guangdong Province, No. 2017A090905038 (to LHR)

Abstract: BACKGROUND: Percutaneous vertebroplasty for osteoporotic vertebral compression fractures can stabilize the vertebral body immediately, relieve pain effectively, and improve the quality of life of patients. However, the relationship between the dispersion pattern of bone cement and its curative effect is still controversial.
OBJECTIVE: To analyze the influence of different types of bone cement dispersion distribution on the early curative effect after percutaneous vertebroplasty.
METHODS: 155 patients with osteoporotic vertebral compression fracture of single vertebral body were selected from January 2018 to December 2019. The distribution of bone cement was determined by X-ray after percutaneous vertebroplasty. The patients were divided into two groups: bone cement separation group (n=77, 22 cases of thoracic vertebra fracture and 55 cases of lumbar vertebra fracture) and bone cement fusion group (n=78, 39 cases of thoracic vertebra fracture and 39 cases of lumbar vertebra fracture). At the time of preoperatively, 2 days postoperatively and final follow-up, bone cement leakage, visual analogue scale score, Oswestry dysfunction index score, vertebral height recovery, and local kyphosis Cobb angle change were compared between the two groups. Simultaneously, the differences in above indexes between thoracic fracture and lumbar fracture were compared between the two groups.
RESULTS AND CONCLUSION: (1) The visual analogue scale score and Oswestry dysfunction index of the bone cement separation group and the bone cement fusion group were lower after surgery than those before surgery (P < 0.05). The visual analogue scale score of the bone cement separation group was lower than that of the bone cement fusion group during final follow-up (P < 0.05). The relative height of anterior edge and midline of the injured vertebra was higher after surgery than that before surgery (P < 0.05), and the local kyphotic Cobb angle was lower than that before surgery (P < 0.05). There was no significant difference between the two groups in the changes of anterior and midline relative height and local kyphosis Cobb angle (P > 0.05). (2) Under the type of bone cement separation distribution, the recovery of anterior edge height in thoracic fracture group was lower than that in lumbar fracture group at 2 days postoperatively and final follow-up (P < 0.05), and the visual analogue scale score in thoracic fracture group was lower than that in lumbar fracture group at 2 days after operation (P < 0.05). There was no significant difference between the two groups in the relative height of anterior edge and midline and the change of local kyphosis Cobb angle (P > 0.05). (3) Under the distribution type of bone cement fusion, the visual analogue scale score of thoracic fracture group was higher than that of lumbar fracture group at the last follow-up (P < 0.05). There was no significant difference between the two groups in the recovery of anterior and midline height and the change of local kyphosis Cobb angle (P > 0.05). (4) Results suggest that two kinds of bone cement dispersion distribution all can obtain satisfactory early postoperative results.

Key words: bone, material, bone cement, osteoporosis, vertebral compression fracture, vertebroplasty, diffuse distribution, vertebral height

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