A Clinical Comparative Study on Low Versus Medium Viscosity PolyMethylMetAcrylate Bone Cement in Percutaneous Vertebroplasty

Purpose To mix high dose antibiotic powder to the bone cement more easily, Hanssen et al reported mixing the antibiotics with the cement during its liquid phase but made no comments about the relevance of cement viscosity and antibiotic distribution. The purpose of this study was to investigate the effect of the cement mixing technique and cement viscosity on the antibiotics distribution in a cement spacer model. Methods Thirty cylindrical models from three groups were examined. Group A was made by mixing the antibiotics with medium viscosity cement prior to adding the liquid monomer (traditional technique). Group B was made by mixing the antibiotics with medium viscosity cement during its liquid phase (Hanssen's technique). Group C was made by traditional technique with low viscosity cement. In all groups 2 g of tetracycline was used. Three 0.1 mm thick cross sections from each spacer model were examined under the fluorescent microscope. The fluorescent spots of tetracycline were calculated automatically in pixels. To evaluate the distribution of the antibiotics in the spacer model, we selected the cross section with the highest number of pixels and the one with the lowest number of pixels from each of the three cross sections and calculated the difference between them. The distribution disequilibrium was compared between group A and B, A and C. Results No significant difference was observed in either comparison. Conclusion The Hanssen's mixing technique can be used when using high dose antibiotics, and either medium or low viscosity cement could be used in terms of antibiotic distribution.

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Influence of bone cement distribution on outcomes following percutaneous vertebroplasty: a retrospective matched-cohort study

Journal of International Medical Research ◽

10.1177/03000605211022287 ◽

2021 ◽

Vol 49 (7) ◽

pp. 030006052110222

Author(s):

Ling Mo ◽

Zixian Wu ◽

De Liang ◽

Linqiang Y ◽

Zhuoyan Cai ◽

...

Keyword(s):

Cohort Study ◽

Bone Cement ◽

Percutaneous Vertebroplasty ◽

Vertebral Compression Fractures ◽

Matched Cohort ◽

Matched Cohort Study ◽

Cement Distribution ◽

Group A ◽

Group B

Objective To evaluate the influence of insufficient bone cement distribution on outcomes following percutaneous vertebroplasty (PVP). Methods This retrospective matched-cohort study included patients 50–90 years of age who had undergone PVP for single level vertebral compression fractures (VCFs) from February 2015 to December 2018. Insufficient (Group A)/sufficient (Group B) distribution of bone cement in the fracture area was assessed from pre- and post-operative computed tomography (CT) images. Assessments were before, 3-days post-procedure, and at the last follow-up visit (≥12 months). Result Of the 270 eligible patients, there were 54 matched pairs. On post-operative day 3 and at the last follow-up visit, significantly greater visual analogue scale (VAS) pain scores and Oswestry Disability Index (ODI) scores were obtained in Group B over Group A, while kyphotic angles (KAs) and vertebral height (VH) loss were significantly larger in Group A compared with Group B. Incidence of asymptomatic cement leakage and re-collapse of cemented vertebrae were also greater in Group A compared with Group B. Conclusions Insufficient cement distribution may relate to less pain relief and result in progressive vertebral collapse and kyphotic deformity post-PVP.

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Percutaneous vertebroplasty versus kyphoplasty for the treatment of neurologically intact osteoporotic Kümmell’s disease

BMC Surgery ◽

10.1186/s12893-021-01057-x ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Shou-qian Dai ◽

Rong-qing Qin ◽

Xiu Shi ◽

Hui-lin Yang

Keyword(s):

Blood Loss ◽

Bone Cement ◽

Percutaneous Vertebroplasty ◽

Cement Leakage ◽

Intraoperative Blood Loss ◽

Surgical Time ◽

Significant Difference ◽

Neurologically Intact ◽

Operation Cost

Abstract Background Percutaneous vertebroplasty (PVP) and kyphoplasty (PKP) have been widely used to treat neurologically intact osteoporotic Kümmell’s disease (KD), but it is still unclear which treatment is more advantageous. Our study aimed to compare and investigate the safety and clinical efficacy of PVP and PKP in the treatment of KD. Methods The relevant data that 64 patients of neurologically intact osteoporotic KD receiving PVP (30 patients) or PKP (34 patients) were analyzed. Surgical time, operation costs, intraoperative blood loss, volume of bone cement injection, and fluoroscopy times were compared. Occurrence of cement leakage, transient fever and re-fracture were recorded. Universal indicators of visual analogue scale (VAS) and Oswestry disability index (ODI) were evaluated separately before surgery and at 1 day, 6 months, 1 year, 2 years and the final follow-up after operation. The height of anterior edge of the affected vertebra and the Cobb’s angle were assessed by imaging. Results All patients were followed up for at least 24 months. The volume of bone cement injection, intraoperative blood loss, occurrence of bone cement leakage, transient fever and re-fracture between two groups showed no significant difference. The surgical time, the operation cost and fluoroscopy times of the PKP group was significantly higher than that of the PVP group. The post-operative VAS, ODI scores, the height of the anterior edge of the injured vertebrae and kyphosis deformity were significantly improved in both groups compared with the pre-operation. The improvement of vertebral height and kyphosis deformity in PKP group was significantly better than that in the PVP group at every same time point during the follow-up periods, but the VAS and ODI scores between the two groups showed no significant difference. Conclusion PVP and PKP can both significantly alleviate the pain of patients with KD and obtain good clinical efficacy and safety. By contrast, PKP can achieve better imaging height and kyphosis correction, while PVP has the advantages of shorter operation time, less radiation volume and operation cost.

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The Comparative Study of Gelatin/CNT-contained Mg-Ca-P Bone Cement with the Plain and CNT-reinforced Ones

Journal of Bionic Engineering ◽

10.1007/s42235-021-0048-5 ◽

2021 ◽

Vol 18 (3) ◽

pp. 623-636

Author(s):

Mohammad Hossein Esnaashary ◽

Masoud Karfarma ◽

Hamid Reza Rezaie ◽

Alireza Khavandi ◽

Jafar Javadpour

Keyword(s):

Comparative Study ◽

Bone Cement ◽

The Comparative Study

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Risk factors for thoracolumbar pain following percutaneous vertebroplasty for osteoporotic vertebral compression fractures

Journal of International Medical Research ◽

10.1177/0300060521989468 ◽

2021 ◽

Vol 49 (1) ◽

pp. 030006052198946

Author(s):

Xiaoguang Fan ◽

Sha Li ◽

Xianshang Zeng ◽

Weiguang Yu ◽

Xiangzhen Liu

Keyword(s):

Risk Factors ◽

Bone Cement ◽

Percutaneous Vertebroplasty ◽

Vertebral Compression Fractures ◽

Mineral Density ◽

Eligibility Criteria ◽

Compression Fractures ◽

Logistic Analysis ◽

The Difference ◽

Poor Outcomes

Objective To explore possible risk factors for poor outcomes following percutaneous vertebroplasty (PV) for painful osteoporotic compression fractures of thoracolumbar vertebra. Methods This was a retrospective review of data from patients who underwent PV at our institution over a ten-year period to evaluate the association between possible risk factors and thoracolumbar pain (T11-L2). According to the difference between pre- and post-operative visual analogue scale (VAS) scores for pain, patients were separated into poor relief (PR; <4) and good relief (GR; ≥4) of pain. Results Of the 750 patients identified, 630 (PR group, n =310; GR group, n = 320) fulfilled the eligibility criteria. Multivariate binary logistic analysis showed that bone mineral density (BMD), >2 fractured vertebral bodies, maldistribution of bone cement, <5 ml bone cement injected into a single vertebral body and thoracolumbar fascia injury prior to surgery were independent risk factors associated with thoracolumbar pain following PV. Conclusion Although prospective controlled studies are required to confirm our results, this review suggests that the above factors should be taken into account when selecting patients for PV.

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