Chinese Journal of Tissue Engineering Research

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Bone cement distribution patterns of osteoporotic vertebral fractures with intravertebral clefts after vertebroplasty

Li Liang, Yu Xue-zhong, Sui Hai-tao, Ren Yue-bing, Liu Guang-quan   

  1. Department of Orthopedics, Dongying People’s Hospital, Dongying  257091, Shandong Province, China
  • Received:2013-03-07 Revised:2013-03-14 Online:2013-06-25 Published:2013-06-25
  • About author:Li Liang★, Master, Attending physician, Department of Orthopedics, Dongying People’s Hospital, Dongying 257091, Shandong Province, China jiawei20100303@163.com

Abstract:

BACKGROUND: There is no domestic research on the effectiveness of bone cement distribution patterns of osteoporotic vertebral fractures with intravertebral clefts after treated by using percutaneous kyphoplasty.
OBJECTIVE: To evaluate the clinical effectiveness of bone cement distribution patterns of osteoporotic vertebral fractures with intravertebral clefts after treated by using percutaneous kyphoplasty.
METHODS: Between February 2008 and November 2011, the clinical data of 61 patients of osteoporotic vertebral fractures with intravertebral clefts undergoing percutaneous kyphoplasty were retrospectively reviewed. The vertebral height restoration and kyphosis correction were measured, and the injection volume of bone cement, bone cement leakage distribution and adjacent vertebral fractures were recorded. The Visual Analogue Scale score was used to evaluate the degree of low back pain, and the Oswestry disability index was used to evaluate the limitation degree of activity function.
RESULTS AND CONCLUSION: According to the vertebral bone cement distribution in the X-ray film or CT image, the study was divided into bulky group (n=29) and sponge-like group (n=32). The bone cement injection volume was (5.20±0.62) mL in the bulky group and (4.80±0.66) mL in the sponge-like group, and there was significant difference between groups (P < 0.05). All patients were followed-up for 16 months. The Visual Analogue Scale score and Oswestry disability index were decreased significantly at 3 days after operation and final follow-up when compared with those before treatment (P < 0.05), and the pain relief in the sponge-like group was better than that in the bulky group (P < 0.05). The frontal vertebral height, midline vertebral height and kyphosis correction in two groups were significantly recoved (P < 0.05), and the restoration rate of imaging index in the bulky group was better that that in the sponge-like group (P < 0.05). The incidence of secondary adjacent vertebral fracture in bulky group was 14%, and 6% in the sponge-like group, and there was significant difference between two groups (P < 0.05). The incidence of bone cement leakage was 17% in bulky group and 25% in the sponge-like group, and there was significant difference between groups (P < 0.05). The results indicate that the sponge-like bone cement distribution pattern can relieve the pain effectively and stably than bulky distribution pattern, and it can improve the life quality of the patients, but with a high incidence of bone cement leakage. The bulky distribution pattern can recover the vertebral height better than sponge-like distribution pattern with a high incidence of secondary adjacent vertebral fracture.

Key words: bone and joint implants, spinal implants, osteoporotic vertebral compressive fracture, percutaneous kyphoplasty, bone cement distribution, bulky distribution, sponge-like distribution, vertebral height, kyphotic angle, adjacent vertebral fracture

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