scholarly journals Cement distribution and initial fixability of trochanteric fixation nail advanced (TFNA) helical blades

Injury ◽  
2021 ◽  
Author(s):  
Sadaki Mitsuzawa ◽  
Shuichi Matsuda
Keyword(s):  
Cement Distribution ◽  
Trochanteric Fixation Nail

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

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.

scholarly journals Factors and Strategies for Post-Vertebroplasty Residual Pain from Thoracolumbar Osteoporotic Vertebral Compression Fractures (OVCF): a systematic review.

2021 ◽  
Author(s):  
Binbin Tang ◽  
Kang Liu ◽  
Lianguo Wu ◽  
Xiaolin Shi
Keyword(s):  
Systematic Review ◽  
Bone Cement ◽  
Vertebral Compression Fractures ◽  
Osteoporotic Vertebral Compression Fractures ◽  
Related Factors ◽  
Residual Pain ◽  
Compression Fractures ◽  
Short Period ◽  
Cement Distribution ◽  
High Level

Abstract Purpose Insignificant pain relief (IPR) in short period after vertebroplasty is common, which often disturb doctors and affect patients Therefore, we reviewed systematically relative articles and attempted to get meaningful evidence on factors and strategies for IPR.Methods PubMed, Web of Science, Embase, CNKI, WanFang, and VIP were searched for literatures treating the osteoporotic vertebral compression fractures (OVCFs) with vertebroplasty and assessing the clinical efficacy.Results 817 references were electronically retrieved, 81 full-text papers were screened and 41 studies were included. Twenty-two trials presented factors on IPR, mainly including bone cement related, operation related and patient-related factors. Nineteen studies showed strategies on residual pain, including improving osteoporosis, reforming surgical operation and add other therapies. 16 prospective, 20 retrospective and 5 meta-analyses consisted the systematic review. The date from included studies point to different results, with less risk of bias, were needed to clarify the factors and strategies for residual pain.Conclusions Bone cement distribution and operation error are highly related to the post-vertebroplasty residual pain. Many therapeutic methods could improve pain and rehabilitate function but lacking more high-level evidence due to the insufficient trails.

scholarly journals Effect of unilateral pulsed jet lavage prior to vertebroplasty on the intravertebral pressure and cement distribution

2020 ◽  
Author(s):  
Jun Yan ◽  
Qiaohui Liu ◽  
Yanping Zheng ◽  
Ziqun Liu ◽  
Xinyu Liu ◽  
...  
Keyword(s):  
Bone Cement ◽  
Lumbar Vertebrae ◽  
Compression Fracture ◽  
Cement Leakage ◽  
Control Group ◽  
Pulsed Jet ◽  
Jet Lavage ◽  
Average Maximum ◽  
Cement Distribution ◽  
Vertebral Bodies

Abstract Background: Percutaneous vertebroplasty is the most common treatment for osteoporotic vertebral compression fracture. However, the morbidity of vertebroplasty-related complications, such as cement leakage, remains high. We tested a new technique of unilateral pulsed jet lavage and investigated its effect on the intravertebral pressure and bone cement distribution. Methods: Thirty lumbar vertebrae (L1-L5) from six cadaver spines were randomly allocated into two groups (with and without irrigation). Prior to vertebroplasty, pulsed jet lavage was performed through one side of the pedicle by using a novel cannula with two concentric conduits to remove the fat and bone marrow of the vertebral bodies in the group with irrigation. The control group was not irrigated. Then, standardized vertebroplasty was performed in the vertebral bodies in both groups. Changes in the intravertebral pressure during injection were recorded. Computed tomography (CT) was performed to observe the cement distribution and extravasations, and the cement mass volume (CMV) was calculated. Results: During cement injection, the average maximum intravertebral pressure of the unirrigated group was higher than that of the irrigated group (4.92kPa versus 2.22kPa, P<0.05). CT scans showed a more homogeneous cement distribution with less CMV (3832 mm 3 vs. 4344 mm 3 , P<0.05) and less leakage rate (6.7% vs. 46.7%, P<0.05) in the irrigated group than in the control group. Conclusions: Unilateral pulsed jet lavage can reduce intravertebral pressure and lower the incidence of cement leakage during vertebroplasty. An enhanced bone cement distribution can also be achieved through this lavage system.

scholarly journals Percutaneous Osteoplasty under Fluoroscopy and Cone-Beam CT guidance for Painful Sternal Metastases

2021 ◽  
Author(s):  
Xun-wei Liu ◽  
Zhi-guo Wang ◽  
Jin Peng ◽  
Gang Sun
Keyword(s):  
Rating Scale ◽  
Numerical Rating Scale ◽  
Cone Beam Ct ◽  
Tumor Location ◽  
Cone Beam ◽  
Ct Guidance ◽  
Numerical Rating ◽  
Cement Distribution ◽  
Painful Bone Metastases

Abstract Background: Although percutaneous osteoplasty (POP) has been widely accepted and is now being performed for the treatment of painful bone metastases outside the spine, there are only scarced reports regarding osteoplasty in painful sternal metastases.Case presentation: The paper reported four patients with painful sternal metastasis who underwent POP under fluoroscopic and cone-beam CT guidance. The patients were three men and one woman (mean age, 66.25 years). Primary tumor location in lung is 3 cases, in thyroid is 1 case. In these cases, Pain was measured using a numerical rating scale (NRS), with scores ranging from 0 (no pain) to 10 (worst pain imaginable). The scores on the NRS in the four patients before POP were 9, 8, 8, and 9. After POP, the NRS scores decreased to 2, 3, 2, and 2, respectively, in follow-up at 6 months. Conclusions: POP is a safe and effective treatment for pain caused by metastatic bone tumors in the sternum. However, care and at tention should be paid to the insertion of a needle and cement distribution for better treatment effect

A Coupled Bio-Chemo-Hydro-Mechanical Model for Bio-cementation in Porous Media

2021 ◽  
Author(s):  
Ronak Mehrabi ◽  
Kamelia Atefi-Monfared
Keyword(s):  
Reactive Transport ◽  
Theoretical Models ◽  
Porous Matrix ◽  
Spatiotemporal Variability ◽  
Attachment Rate ◽  
Unknown Parameters ◽  
Stress Strain ◽  
Precipitated Calcium Carbonate ◽  
Cement Distribution ◽  
Stiffness Characteristics

A key challenge involving microbial induced carbonate precipitation (MICP) is lack of rigorous yet practical theoretical models to predict the intricate biological-chemical-hydraulic-mechanical (BCHM) processes and the resulting bio-cement production. This paper presents a novel BCHM model based on multiphase, multispecies reactive transport approach in the framework of poroelasticity, aimed at achieving reasonable prediction of the produced bio-cement, and the enhanced geomechanical characteristics. The proposed model incorporates four key components: (i) coupling of hydro-mechanical stress/strain alterations with bio-chemical processes; (ii) stress/strain changes induced due to precipitation and growth of bio-cement within the porous matrix; (iii) spatiotemporal variability in hydraulic and stiffness characteristics of the treated medium; (iv) and velocity dependency of the attachment rate of bacteria. The fully-coupled BCHM model predicts key unknown parameters during treatment including: concentration of bacteria and chemical solutions, precipitated calcium carbonate, hydraulic properties of the solid skeleton, and in-situ pore pressures and strains. The model was able to reasonably predict bio-cementation from two different laboratory column experiments. The Kozeny–Carman permeability equation is found to underestimate permeability reductions due to bio-cementation, while the Verma–Pruess relation could be more accurate. A sensitivity analysis revealed bio-cement distribution to be particularly sensitive to the attachment rate of bacteria.

Comparison of the clinical outcomes and cement distribution patterns after percutaneous vertebroplasty in the treatment of thoracolumbar Kümmell’s disease and OVCFs

2020 ◽  
Author(s):  
Cheng-Liang Wang ◽  
Ji-Bin Chen ◽  
Te Li
Keyword(s):  
Bone Cement ◽  
Distribution Pattern ◽  
Operation Time ◽  
Distribution Patterns ◽  
Fracture Rate ◽  
Vas Score ◽  
Cement Distribution ◽  
Kummell’S Disease ◽  
Kümmell’S Disease ◽  
Time Point

Abstract Background The purpose of this study is to investigate and compare the therapeutic effect and distribution characteristics of bone cement in the PVP treatment for thoracolumbar Kümmell's diseases and OVCFs. Methods A prospective analysis of 35 patients with Kümmell ’s disease (K group) and 35 patients with OVCFs (O group) who underwent PVP treatment from February 2016 to February 2018 was conducted. The vertebral compression rate and degree of osteoporosis were more serious in the K group than in the O group ( P <0.05, respectively). Distribution pattern, volume and leakage rate of bone cement, operation time, VAS score, ODI, correction rates of vertebral compression and kyphosis, re-fracture rate of adjacent vertebrae in 2 years between the two groups were compared to assess clinical effect. Results The follow-up time of the two groups was 24-48 months. The amount of intraoperative bone cement injection was significantly higher in the K group than in the O group ( P =0.025). The cement distribution pattern of local solid lump was dominant in the K group (65.71%), while intercalation with trabeculae was dominant in the O group (74.29%) ( P <0.001). VAS score and ODI were significantly lower both in the two groups at 1 day, 1 year and 2 years after surgery than before surgery (all P <0.05), but significantly lower in the K group than in the O group at each time point after surgery (all P <0.05). The correction rates of kyphosis and vertebral compression in both groups was significantly corrected ( P <0.05, respectively) and gradually lost with time ( P <0.05, respectively). The correction rates of kyphosis and vertebral compression were significantly higher in the K group than in the O group at each time point after surgery (all P <0.05). Conclusions PVP has the advantages of simple operation, short operation time, small trauma and quick recovery in treating both Kümmell's disease and OVCFs. However, PVP can better restore partial vertebral height and correct kyphosis in the treatment of Kümmell's disease, while can better alleviate pain and improve ODI in the treatment of OVCFs.

Extent and Morbidity of Lateralization of a Trochanteric Fixation Nail Blade

Orthopedics ◽  
2017 ◽  
Vol 40 (5) ◽  
pp. e886-e891 ◽  
Author(s):  
Phillip A. Sandifer ◽  
Robert M. Hulick ◽  
Matthew L. Graves ◽  
Clay A. Spitler ◽  
George V. Russell ◽  
...  
Keyword(s):  
Trochanteric Fixation Nail
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