scholarly journals Treatment of Old Vertebral Compression Fracture With Kyphosis by Different Reconstruction Methods: a Finite Element Analysis

2020 ◽  
Author(s):  
Han Ye ◽  
Wang Xiaodong ◽  
Wu Jincheng ◽  
Xu Hanpeng ◽  
Zhang Zepei ◽  
...  
Keyword(s):  
Internal Fixation ◽  
Vertebral Body ◽  
Compression Fracture ◽  
Vertebral Compression Fractures ◽  
Lateral Bending ◽  
Short Segment ◽  
Compression Fractures ◽  
Reconstruction Methods ◽  
Short Segment Fixation ◽  
Vertebral Resection

Abstract Background: In repair of vertebral compression fractures, there is a lack of effective biomechanical verification as to whether only half of the vertebral body and the upper and lower intervertebral discs has any effect on spinal biomechanics; there also remains debate as to the appropriate length of fixation.Methods: A model of old vertebral compression fractures with kyphosis was established based on CT data. Vertebral column resection (VCR) and posterior unilateral vertebral resection and reconstruction (PUVCR) were performed at T12; long- and short-segment fixation methods were applied, and we analyzed biomechanical changes after surgery.Results: Range of motion (ROM) decreased in all fixed models, with lumbar VCR decreasing the most and short posterior unilateral vertebral resection and reconstruction (SPUVCR) decreasing the least; in the long posterior unilateral vertebral resection and reconstruction (LPUVCR) model, the internal fixation system produced the maximum VMS stress of 213.25 MPa in a lateral bending motion, and a minimum stress of 40.22 MPa in a lateral bending motion in the SVCR.Conclusion: There was little difference in thoracolumbar ROM between PUVCR and VCR models, while thoracolumbar ROM was smaller in long-segment fixation than in short-segment fixation. In all models, the VMS was greatest at the screw-rod junction and greatest at the ribcage–vertebral body interface, which partly explains the high probability of internal fixation failure and prosthesis migration in these two positions.

scholarly journals Biomechanical finite element analysis of vertebral column resection and posterior unilateral vertebral resection and reconstruction osteotomy

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Ye Han ◽  
Xiaodong Wang ◽  
Jincheng Wu ◽  
Hanpeng Xu ◽  
Zepei Zhang ◽  
...  
Keyword(s):  
Internal Fixation ◽  
Vertebral Body ◽  
Vertebral Column ◽  
Vertebral Compression Fractures ◽  
Lateral Bending ◽  
Short Segment ◽  
Vertebral Column Resection ◽  
Compression Fractures ◽  
Short Segment Fixation ◽  
Vertebral Resection

Abstract Background Regarding the repair of vertebral compression fractures, there is a lack of adequate biomechanical verification as to whether only half of the vertebral body and the upper and lower intervertebral discs affect spinal biomechanics; there also remains debate as to the appropriate length of fixation. Methods A model of old vertebral compression fractures with kyphosis was established based on CT data. Vertebral column resection (VCR) and posterior unilateral vertebral resection and reconstruction (PUVCR) were performed at T12; long- and short-segment fixation methods were applied, and we analyzed biomechanical changes after surgery. Results Range of motion (ROM) decreased in all fixed models, with lumbar VCR decreasing the most and short posterior unilateral vertebral resection and reconstruction (SPUVCR) decreasing the least; in the long posterior unilateral vertebral resection and reconstruction (LPUVCR) model, the internal fixation system produced the maximum VMS stress of 213.25 mPa in a lateral bending motion and minimum stress of 40.22 mPa in a lateral bending motion in the SVCR. Conclusion There was little difference in thoracolumbar ROM between PUVCR and VCR models, while thoracolumbar ROM was smaller in long-segment fixation than in short-segment fixation. In all models, the VMS was most significant at the screw-rod junction and greatest at the ribcage–vertebral body interface, partly explaining the high probability of internal fixation failure and prosthesis migration in these two positions.

scholarly journals Finite Element Analysis of Stability of Internal Fixation Reconstruction Methods for Lumbar Total Vertebral Resection

2020 ◽  
Author(s):  
Shengcheng Wan ◽  
Zhaoyi Wu ◽  
Yuanwu Cao ◽  
Xiaoxing Jiang ◽  
Zixian Chen ◽  
...  
Keyword(s):  
Finite Element ◽  
Lumbar Spine ◽  
Internal Fixation ◽  
Vertebral Body ◽  
Spinal Stability ◽  
Lateral Bending ◽  
Short Segment ◽  
Short Segment Fixation ◽  
Anterior Support ◽  
Artificial Vertebral Body

Abstract Objective To compare the effect of different fixation methods on spinal stability after total en bloc spondylectomy(TES) of lumbar spine.Method The finite element models were established based on the CT scan of a healthy volunteer. After the validity of the models was confirmed, the models with different posterior fixation methods of the lumbar spine were established with and without the artificial vertebral body, respectively. The motions of flexion, extension, lateral bending and rotation under supine and standing conditions were simulated. The angular displacement of T11-L3 and stress of internal fixations were compared and analyzed.Results The finite element models of spinal reconstruction after TES were obtained. When the anterior support existed, the movement of the spine after TES was not affected by the gravity of the upper body. The movements in the opposite direction on the same plane were similar. All three methods provided enough stability to the spine. The improved short-segment fixation shared stress of the artificial vertebral body with no obvious negative effect. The long-segment fixation had stronger fixation effect with the huge loss of the range of motion of lumbar spine. When the anterior support failed, obvious rotation showed in lateral bending in all models. The short-segment fixation and the long-segment fixation failed to maintain the spinal stability with fixations breakage or functional loss. The improved short-segment fixations showed strong ability in maintaining the spinal stability. The vertebral body screws can prevent the failure of anterior fixation by sharing great stress of the whole internal fixation system. The improved short-segment had huge advantages over the others.Conclusion After TES, the improved short-segment fixation can provide more stability to the spine. The vertebral body screws can prevent the failure of the internal fixation by reducing the stress of the anterior support. This fixation method should be promoted in clinical practice while the effect requires more observation.

Kyphoplasty Technique for Thoraco-Lumbar Compression Fracture

2018 ◽  
Vol 1 (2) ◽  
pp. 36
Author(s):  
Alfred Sutrisno Sim
Keyword(s):  
Elderly Patients ◽  
Vertebral Body ◽  
Treatment Options ◽  
Body Height ◽  
Compression Fracture ◽  
Vertebral Compression Fractures ◽  
Compression Fractures ◽  
Reduction Of Pain ◽  
Surgical Fixation ◽  
Osteoporotic Compression Fractures

Osteoporotic vertebral compression fracture (VCF) is a significant cause of morbidity and mortality among elderly patients. Fractures can happen because of osteoporosis, tumours, or other conditions.In the past two decades, kyphoplasty has emerged as surgical options that play a central role in the treatment of vertebral compression fractures. Before the common use of kyphoplasty, the principal surgical option for treatment of compression fractures was decompression and fusion. However, surgical fixation frequently failed in elderly patients because of osteopenia. Kyphoplasty has expanded to include treatment of osteoporotic compression fractures, traumatic compression fractures, and metastatic compression fractures. Osteoporotic compression fractures are now the most common indication for this procedure.Kyphoplasty utilizes an inflatable balloon to create a cavity for the cement with the additional potential goals of restoring height and reducing kyphosis. Kyphoplasty is an effective treatment options for the reduction of pain associated with vertebral body compression fractures. Biomechanical studies demonstrate that kyphoplasty is initially superior for increasing vertebral body height and reducing kyphosis, but these gains are lost with repetitive loading. Complications secondary to extravasation of cement include compression of neural elements and venous embolism. These complications are rare but more common with vertebroplasty. Kyphoplasty is a safe and effective procedure for the treatment of vertebral body compression fractures. 

MRI PATTERN OF VERTEBRAL FRACTURES DUE TO OSTEOPOROSIS, INFECTION, AND MALIGNANT TUMORS

2010 ◽  
Vol 13 (02) ◽  
pp. 57-63
Author(s):  
Mohamed El-Sayed Abdel-Wanis ◽  
Mohamed Tharwat Mahmoud Solyman ◽  
Nahla Mohamed Ali Hasan
Keyword(s):  
Vertebral Body ◽  
Vertebral Fractures ◽  
Malignant Tumors ◽  
Compression Fracture ◽  
Osteoporotic Fractures ◽  
Spinal Infection ◽  
Vertebral Compression Fractures ◽  
Vertebral Collapse ◽  
Compression Fractures ◽  
Vertebral Wedging

No previous studies discussed the significance of the MRI pattern of vertebral collapse in differentiation between vertebral compression fractures due to malignancy, osteoporosis, and infections. MRI was used in the evaluation of 152 atraumatic vertebral compression fractures in 80 patients: 85 malignant, 34 osteoporotic, and 33 infective. Central collapse of the fractured vertebral body was the commonest pattern in malignant fractures (57 vertebrae, 67%), followed by uniform collapse (21 vertebrae, 24.7%), then anterior wedging (5 vertebrae, 5.9%), and finally posterior wedging (2 vertebrae, 2.4%). In osteoporotic fractures, anterior wedging was the commonest pattern (18 vertebrae, 53%), followed by central collapse (11 vertebrae, 32.3%), then uniform collapse (4 vertebrae, 11.8%), and finally posterior wedging (1 vertebra, 2.9%). In vertebral compression fractures due to spinal infection, anterior wedging was the commonest pattern (20 vertebrae, 60.6%), followed by uniform collapse (12 vertebrae, 36.4%), while only one vertebra (3%) was centrally collapsed. Central collapse of the vertebral body is highly suggestive of malignant compression fracture while anterior vertebral wedging is highly suggestive of a benign compression fracture.

scholarly journals Comparison of Rigid and Soft-Brace Treatments for Acute Osteoporotic Vertebral Compression Fracture: A Prospective, Randomized, Multicenter Study

2019 ◽  
Vol 8 (2) ◽  
pp. 198 ◽  
Author(s):  
Tsuyoshi Kato ◽  
Hiroyuki Inose ◽  
Shoichi Ichimura ◽  
Yasuaki Tokuhashi ◽  
Hiroaki Nakamura ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Back Pain ◽  
Outcome Measures ◽  
Vertebral Body ◽  
Compression Fracture ◽  
Secondary Outcome ◽  
Vertebral Compression Fractures ◽  
Brace Treatment ◽  
Compression Fractures

While bracing is the standard conservative treatment for acute osteoporotic compression fracture, the efficacy of different brace treatments has not been extensively studied. We aimed to clarify and compare the preventive effect of the different brace treatments on the deformity of the vertebral body and other clinical results in this patient cohort. This multicenter nationwide prospective randomized study included female patients aged 65–85 years with acute one-level osteoporotic compression fractures. We assigned patients within four weeks of injury to either a rigid-brace treatment or a soft-brace treatment. The main outcome measure was the anterior vertebral body compression percentage at 48 weeks. Secondary outcome measures included scores on the European Quality of Life-5 Dimensions (EQ-5D), visual analog scale (VAS) for lower back pain, and the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ). A total of 141 patients were assigned to the rigid-brace group, whereas 143 patients were assigned to the soft-brace group. There were no statistically significant differences in the primary outcome and secondary outcome measures between groups. In conclusion, among patients with fresh vertebral compression fractures, the 12-week rigid-brace treatment did not result in a statistically greater prevention of spinal deformity, better quality of life, or lesser back pain than soft-brace.

Treatment of Osteoporotic Vertebral Compression Fracture with Target-Anchored Vertebral Body Plasty

2019 ◽  
Vol 9 (8) ◽  
pp. 1081-1085
Author(s):  
Liu Yang ◽  
Xiangbei Qi ◽  
Tao Lei ◽  
Jingtao Zhang ◽  
Junming Cao
Keyword(s):  
Bone Cement ◽  
Vertebral Body ◽  
Vertebral Compression Fracture ◽  
Compression Fracture ◽  
Target Group ◽  
Vertebral Compression Fractures ◽  
Osteoporotic Vertebral Compression Fractures ◽  
Traditional Group ◽  
Compression Fractures ◽  
Fracture Area

Objective: To analyze the clinical effect of target-anchored vertebroplasty and traditional percutaneous vertebroplasty on the treatment of osteoporotic vertebral compression fractures. Methods: 50 female New Zealand rabbits were selected for establishing the osteoporotic vertebral compression fracture model and divided into two groups, traditional group and target group followed by analysis of the anterior, posterior, and posterior vertebral body anterior height of the fracture and the injection volume of the bone cement at full filling, and to compare the ultimate compressive strength and stiffness differences between the two groups of specimens by biomechanical testing. Results: In traditional group, the operative time was significantly shorter than that of target group, and the intraoperative bleeding was significantly lower than that of target group (P < 0.05). The fracture area of target group was filled with sufficient bone cement, in the traditional group, 3 cases (12%) showed that bone cement was not filled in the fracture area (P < 0.05), but the total bone cement filling volume was not significantly different between the two groups, but the traditional group had more complete bone cement filling than the bone cement filling, the difference was statistically significant (P < 0.05). In addition, the anterior vertebral body height of each group was significantly higher than other observation points in the group (P < 0.05). However, the distribution of permeability and osmotic type of bone cement between the two groups was not significantly different (P > 0.05). Conclusion: Target-anchored vertebroplasty can improve the quality of clinical treatment of osteoporotic vertebral compression fractures, indicating that it might be a new surgical method.

scholarly journals Treatment of subacute osteoporotic vertebral compression fractures with percutaneous vertebroplasty: A case report

2018 ◽  
Vol 75 (10) ◽  
pp. 1049-1053
Author(s):  
Zoran Aleksic ◽  
Ivana Stankovic ◽  
Ivana Zivanovic-Macuzic ◽  
Dejan Jeremic ◽  
Aleksandar Radunovic ◽  
...  
Keyword(s):  
Case Report ◽  
Vertebral Body ◽  
Percutaneous Vertebroplasty ◽  
Compression Fracture ◽  
Vertebral Compression Fractures ◽  
Minor Trauma ◽  
Osteoporotic Vertebral Compression Fractures ◽  
Invasive Approach ◽  
Compression Fractures ◽  
Thoracic Spinal

Introduction. Percutaneous vertebroplasty (PVP), as a mini-invasive approach in the treatment of patients with osteoporotic vertebral compression fractures (OVCFs), provides stabilization of the spine and relives pain. The most commonly it is applied in the 3?6 weeks before bending of the spine. Complete cessation of pain is easier to achieve if you treat ?less mature? fractures. The aim of the report is to show that PVP is effective and safe for old fractures too. Case report. A 77-old patient suffered from a stable compression fracture of 3th lumbar (L3) vertebral body after minor trauma. This fracture was clinically and radiologically diagnosed. The conservative treatment that included lumbo-sacral orthosis (LSO), analgesic drugs and physical therapy, was primarily applied due to permanent pain and type of fracture. After a period of two months, pain persisted, but it was localized in a thoracic spinal segment with radiologically diagnosed fractured bodies of 8th (Th8) and 10th (Th10), thoracic vertebra without neurological deficit. Thoraco-lumbo-sacral orthosis (TLSO) was prescribed and after six months the indication for vertebroplasty of the Th8 and Th10 vertebral body was given. The pain relief had been achieved and the patient was discharged from the Clinic for Orthopedics on the postoperative day 2, and was symptom free during the follow-up period. Conclusion. In patients with stable OVCFs, PVP is an effective therapy for reducing pain and improving mobility of 6 months old fractures.

Randomized controlled trial of vertebroplasty versus kyphoplasty in the treatment of vertebral compression fractures

2015 ◽  
Vol 8 (7) ◽  
pp. 756-763 ◽  
Author(s):  
Avery J Evans ◽  
Kevin E Kip ◽  
Waleed Brinjikji ◽  
Kennith F Layton ◽  
Mary L Jensen ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Vertebral Body ◽  
Controlled Trial ◽  
Vertebral Compression Fractures ◽  
Compression Fractures ◽  
Time Points ◽  
Randomized Controlled ◽  
Primary Endpoints ◽  
Average Pain ◽  
Registration Number

BackgroundWe present the results of a randomized controlled trial evaluating the efficacy of vertebroplasty versus kyphoplasty in treating vertebral body compression fractures.MethodsPatients with vertebral body compression fractures were randomly assigned to treatment with kyphoplasty or vertebroplasty. Primary endpoints were pain (0–10 scale) and disability assessed using the Roland–Morris Disability Questionnaire (RMDQ). Outcomes were assessed at 3 days, 1 month, 6 months, and 1 year following the procedure.Results115 subjects were enrolled in the trial with 59 (51.3%) randomly assigned to kyphoplasty and 56 (48.7%) assigned to vertebroplasty. Mean (SD) pain scores at baseline, 3 days, 30 days, and 1 year for kyphoplasty versus vertebroplasty were 7.4 (1.9) vs 7.9 (2.0), 4.1 (2.8) vs 3.7 (3.0), 3.4 (2.5) vs 3.6 (2.9), and 3.0 (2.8) vs 2.3 (2.6), respectively (p>0.05 at all time points). Mean (SD) RMDQ scores at baseline, 3 days, 30 days, 180 days, and 1 year were 17.3 (6.6) vs 16.3 (7.4), 11.8 (7.9) vs 10.9 (8.2), 8.6 (7.2) vs 8.8 (8.5), 7.9 (7.4) vs 7.3 (7.7), 7.5 (7.2) vs 6.7 (8.0), respectively (p>0.05 at all time points). For baseline to 12-month assessment in average pain and RMDQ scores, the standardized effect size between kyphoplasty and vertebroplasty was small at −0.36 (95% CI −1.02 to 0.31) and −0.04 (95% CI −1.68 to 1.60), respectively.ConclusionsOur study indicates that vertebroplasty and kyphoplasty appear to be equally effective in substantially reducing pain and disability in patients with vertebral body compression fractures.Trial registration numberNCT00279877.

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