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Pelvic Bone

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1. Pelvic modelling and the comparison between plate position for double pelvic osteotomy using artificial cancellous bone and finite element analysis Full Text available with Trip Pro

Pelvic modelling and the comparison between plate position for double pelvic osteotomy using artificial cancellous bone and finite element analysis Finite element analysis was used to compare fixation methods for double pelvic osteotomy (DPO). Using 3D scanning a stereolithography (stl) image was produced of a canine pelvis and this was subsequently refined in computer aided design (CAD). Using the CAD files, the images were imported in MSC Marc software to produce a working finite element (FE (...) ) model with 3 dimensional tetrahedral elements with linear shaped functions. The dimensions of a precontoured pelvic osteotomy plate with eight screws and a twisted seven screw straight plate were used to build the 2 fixations implants for the FE models. An equivalent load of 300 N was applied progressively on all FE models in order to facilitate its convergence. The load was applied in a distributed manner on the femur-hip joint contact area in order to simulate the actual behavior of the joint

2018 BMC veterinary research

2. Correction: Cone-beam computed tomography with automated bone subtraction in preoperative embolization for pelvic bone tumors. Full Text available with Trip Pro

Correction: Cone-beam computed tomography with automated bone subtraction in preoperative embolization for pelvic bone tumors. [This corrects the article DOI: 10.1371/journal.pone.0175907.].

2017 PLoS ONE

3. Cone-beam computed tomography with automated bone subtraction in preoperative embolization for pelvic bone tumors. Full Text available with Trip Pro

Cone-beam computed tomography with automated bone subtraction in preoperative embolization for pelvic bone tumors. To evaluate the usefulness of cone-beam computed tomography with automated bone subtraction (CBCT-ABS) in the preoperative embolization of hypervascular tumors located in the pelvic bone.This retrospective study included 26 patients with pelvic bone tumors who underwent preoperative embolization between January 2014 and October 2016. A CBCT-ABS scan was taken in a total of 17 (...) not statistically different between the two groups (p > 0.05). On the other hand, the number of angiographic runs in the CBCT-ABS group was significantly lower than that in the DSA group (p = 0.029). The total DAP of the CBCT-ABS group (mean, 17700.7 μGym2) was higher than that of the DSA group (mean, 8939.4 μGym2) (p = 0.002).The use of CBCT-ABS during the preoperative embolization of pelvic bone tumors significantly reduces the number of angiographic runs at the cost of an increased radiation dose.

2017 PLoS ONE

4. Urinary incontinence and pelvic organ prolapse in women: management

Urinary incontinence and pelvic organ prolapse in women: management Urinary incontinence and pelvic organ Urinary incontinence and pelvic organ prolapse in women: management prolapse in women: management NICE guideline Published: 2 April 2019 nice.org.uk/guidance/ng123 © NICE 2019. All rights reserved. Subject to Notice of rights (https://www.nice.org.uk/terms-and-conditions#notice-of- rights).Y Y our responsibility our responsibility The recommendations in this guideline represent the view (...) in this guideline should be interpreted in a way that would be inconsistent with complying with those duties. Commissioners and providers have a responsibility to promote an environmentally sustainable health and care system and should assess and reduce the environmental impact of implementing NICE recommendations wherever possible. Urinary incontinence and pelvic organ prolapse in women: management (NG123) © NICE 2019. All rights reserved. Subject to Notice of rights (https://www.nice.org.uk/terms

2019 National Institute for Health and Clinical Excellence - Clinical Guidelines

5. A study of dynamic contrast-enhanced MR imaging features and influence factors of pelvic bone marrow in adult females. (Abstract)

A study of dynamic contrast-enhanced MR imaging features and influence factors of pelvic bone marrow in adult females. Perfusion of the pelvic bone marrow is reduced in the postmenopausal group and with age. Quantitative dynamic contrast-enhanced MRI could reflect the blood supply characteristics and hemodynamic changes of the pelvic bone marrow. These results contribute to the description of osteoporosis in the postmenopausal females and the elderly.To investigate the effect of menstrual (...) status and age on the perfusion of pelvic bone marrow in adult females using quantitative dynamic contrast-enhanced MRI (DCE-MRI).In total, 96 adult females who underwent DCE-MRI between September 2017 and December 2017 were included. All the subjects' quantitative DCE-MRI parameters of pelvic bone marrow were measured and retrospectively analyzed, including Ktrans (volume transfer constant), Kep (efflux rate constant), and Ve (interstitial volume). According to their menstrual status, the subjects

2019 Osteoporosis International

6. Deep learning for automated segmentation of pelvic muscles, fat, and bone from CT studies for body composition assessment. (Abstract)

Deep learning for automated segmentation of pelvic muscles, fat, and bone from CT studies for body composition assessment. To develop a deep convolutional neural network (CNN) to automatically segment an axial CT image of the pelvis for body composition measures. We hypothesized that a deep CNN approach would achieve high accuracy when compared to manual segmentations as the reference standard.We manually segmented 200 axial CT images at the supra-acetabular level in 200 subjects, labeling (...) background, subcutaneous adipose tissue (SAT), muscle, inter-muscular adipose tissue (IMAT), bone, and miscellaneous intra-pelvic content. The dataset was randomly divided into training (180/200) and test (20/200) datasets. Data augmentation was utilized to enlarge the training dataset and all images underwent preprocessing with histogram equalization. Our model was trained for 50 epochs using the U-Net architecture with batch size of 8, learning rate of 0.0001, Adadelta optimizer and a dropout of 0.20

2019 Skeletal radiology Controlled trial quality: uncertain

7. Can Navigation Improve the Ability to Achieve Tumor-free Margins in Pelvic and Sacral Primary Bone Sarcoma Resections? A Historically Controlled Study. (Abstract)

Can Navigation Improve the Ability to Achieve Tumor-free Margins in Pelvic and Sacral Primary Bone Sarcoma Resections? A Historically Controlled Study. Anatomic and surgical complexity make pelvic and sacral bone sarcoma resections challenging. Positive surgical margins are more likely to occur in patients with pelvic and sacral bone sarcomas than in those with extremity sarcomas and are associated with an increased likelihood of local recurrence. Intraoperative navigation techniques have been (...) proposed to improve surgical accuracy in achieving negative margins, but available evidence is limited to experimental (laboratory) studies and small patient series. Only one small historically controlled study is available. Because we have experience with both approaches, we wanted to assess whether navigation improves our ability to achieve negative resection margins.Are navigated resections for pelvic and sacral primary bone sarcomas better able to achieve adequate surgical margins than nonnavigated

2019 Clinical Orthopaedics and Related Research

8. Are two retrograde 3.5 mm screws superior to one 7.3 mm screw for anterior pelvic ring fixation in bones with low bone mineral density? Full Text available with Trip Pro

Are two retrograde 3.5 mm screws superior to one 7.3 mm screw for anterior pelvic ring fixation in bones with low bone mineral density? Osteosynthesis of anterior pubic ramus fractures using one large-diameter screw can be challenging in terms of both surgical procedure and fixation stability. Small-fragment screws have the advantage of following the pelvic cortex and being more flexible.The aim of the present study was to biomechanically compare retrograde intramedullary fixation (...) of the superior pubic ramus using either one large- or two small-diameter screws.A total of 12 human cadaveric hemipelvises were analysed in a matched pair study design. Bone mineral density of the specimens was 68 mgHA/cm3 (standard deviation (sd) 52). The anterior pelvic ring fracture was fixed with either one 7.3 mm cannulated screw (Group 1) or two 3.5 mm pelvic cortex screws (Group 2). Progressively increasing cyclic axial loading was applied through the acetabulum. Relative movements in terms

2017 Bone & joint research

9. Can Augmented Reality Be Helpful in Pelvic Bone Cancer Surgery? An In Vitro Study. Full Text available with Trip Pro

Can Augmented Reality Be Helpful in Pelvic Bone Cancer Surgery? An In Vitro Study. Application of surgical navigation for pelvic bone cancer surgery may prove useful, but in addition to the fact that research supporting its adoption remains relatively preliminary, the actual navigation devices are physically large, occupying considerable space in already crowded operating rooms. To address this issue, we developed and tested a navigation system for pelvic bone cancer surgery assimilating (...) augmented reality (AR) technology to simplify the system by embedding the navigation software into a tablet personal computer (PC).Using simulated tumors and resections in a pig pelvic model, we asked: Can AR-assisted resection reduce errors in terms of planned bone cuts and improve ability to achieve the planned margin around a tumor in pelvic bone cancer surgery?We developed an AR-based navigation system for pelvic bone tumor surgery, which could be operated on a tablet PC. We created 36 bone tumor

2018 Clinical Orthopaedics and Related Research

10. Upshifting the Ipsilateral Proximal Femur May Provide Satisfactory Reconstruction of Periacetabular Pelvic Bone Defects After Tumor Resection. Full Text available with Trip Pro

Upshifting the Ipsilateral Proximal Femur May Provide Satisfactory Reconstruction of Periacetabular Pelvic Bone Defects After Tumor Resection. Pelvic ring reconstruction after resection of pelvic malignancies or aggressive benign tumors remains challenging, especially when the tumor invades periacetabular bone, resulting in a Type II resection as classified by Enneking and Dunham (removal of part or all of the acetabulum). Although numerous treatment approaches are in use, none is clearly (...) tumors included osteotomy of the femoral shaft, harvesting the proximal femur as a graft. The length of the femoral graft was determined by the extent of the pelvic defect. The proper placement was selected after a comparison of the proximal femur and the pelvic defect. A curved reconstruction plate and cancellous bone screws were used for pelvic fixation. The operative duration and total blood loss were recorded. Of the 11 patients who underwent this approach, all but one had at least 2 years

2018 Clinical Orthopaedics and Related Research

11. Bone marrow reconversion mimicking pelvis metastases in a patient with rectal cancer: a pitfall on magnetic resonance images Full Text available with Trip Pro

Bone marrow reconversion mimicking pelvis metastases in a patient with rectal cancer: a pitfall on magnetic resonance images 30140624 2018 11 14 2223-4292 8 6 2018 Jul Quantitative imaging in medicine and surgery Quant Imaging Med Surg Bone marrow reconversion mimicking pelvis metastases in a patient with rectal cancer: a pitfall on magnetic resonance images. 621-626 10.21037/qims.2018.07.03 Zhao Feng F Department of Radiation Oncology, the First Affiliated Hospital, College of Medicine

2018 Quantitative imaging in medicine and surgery

12. Capturing Bone Signal in MRI of Pelvis, as a Large FOV Region, Using TWIST Sequence and Generating a 5-Class Attenuation Map for Prostate PET/MRI Imaging Full Text available with Trip Pro

Capturing Bone Signal in MRI of Pelvis, as a Large FOV Region, Using TWIST Sequence and Generating a 5-Class Attenuation Map for Prostate PET/MRI Imaging Prostate imaging is a major application of hybrid positron emission tomography/magnetic resonance imaging (PET/MRI). Currently, MRI-based attenuation correction (MRAC) for whole-body PET/MRI in which the bony structures are ignored is the main obstacle to successful implementation of the hybrid modality in the clinical work flow. Ultrashort (...) echo time sequence captures bone signal but needs specific hardware-software and is challenging in large field of view (FOV) regions, such as pelvis. The main aims of the work are (1) to capture a part of the bone signal in pelvis using short echo time (STE) imaging based on time-resolved angiography with interleaved stochastic trajectories (TWIST) sequence and (2) to consider the bone in pelvis attenuation map (µ-map) to MRAC for PET/MRI systems.Time-resolved angiography with interleaved

2018 Molecular imaging

13. The segmentation of bones in pelvic CT images based on extraction of key frames Full Text available with Trip Pro

The segmentation of bones in pelvic CT images based on extraction of key frames Bone segmentation is important in computed tomography (CT) imaging of the pelvis, which assists physicians in the early diagnosis of pelvic injury, in planning operations, and in evaluating the effects of surgical treatment. This study developed a new algorithm for the accurate, fast, and efficient segmentation of the pelvis.The proposed method consists of two main parts: the extraction of key frames (...) and the segmentation of pelvic CT images. Key frames were extracted based on pixel difference, mutual information and normalized correlation coefficient. In the pelvis segmentation phase, skeleton extraction from CT images and a marker-based watershed algorithm were combined to segment the pelvis. To meet the requirements of clinical application, physician's judgment is needed. Therefore the proposed methodology is semi-automated.In this paper, 5 sets of CT data were used to test the overlapping area, and 15 CT

2018 BMC Medical Imaging

14. A practical guide for planning pelvic bone percutaneous interventions (biopsy, tumour ablation and cementoplasty) Full Text available with Trip Pro

A practical guide for planning pelvic bone percutaneous interventions (biopsy, tumour ablation and cementoplasty) Percutaneous approaches for pelvic bone procedures (bone biopsies, tumour ablation and cementoplasty) are multiple and less well systematised than for the spine or extremities. Among the different imaging techniques that can be used for guidance, computed tomography (CT) scan is the modality of choice because of the complex pelvic anatomy. In specific cases, such as cementoplasty (...) where real-time evaluation is a determinant, a combination of CT and fluoroscopy is highly recommended. The objective of this article is to propose a systematic approach for image-guided pelvic bone procedures, as well as to provide some technical tips. We illustrate the article with multiple examples, and diagrams of the approaches and important structures to avoid to perform these procedures safely.• Pelvic bone procedures are safe to perform if anatomical landmarks are recognised. • The safest

2018 Insights into imaging

15. BMI and gender increase risk for sacral fractures after multilevel instrumented spinal fusion compared to bone mineral density and pelvic parameters. (Abstract)

BMI and gender increase risk for sacral fractures after multilevel instrumented spinal fusion compared to bone mineral density and pelvic parameters. Sacral fractures are a rare but potentially devastating complication. Long-fusion constructs, including the sacrum, that do not extend to the pelvis may result in sacral fractures. Besides established risk factors including gender, age, and number of levels fused, body mass index (BMI), pelvic parameters, and bone mineral density (BMD) have also (...) , our data do not show any difference in preoperative pelvic parameters and BMD between the groups. This is in line with previous reports that indicate only a few patients with sacral fracture after fusion surgery have clear evidence of osteoporosis. Bone mineral density as a measure of bone quantity, rather than bone quality, may not be as important in these fractures as previously thought. Obesity, however, was associated with higher odds of experiencing postoperative sacral fractures. The present

2018 The Spine Journal

17. Pharmacological interventions for the prevention of bleeding in people undergoing definitive fixation of hip, pelvic and long bone fractures: a systematic review and network meta-analysis [Cochrane protocol]

Pharmacological interventions for the prevention of bleeding in people undergoing definitive fixation of hip, pelvic and long bone fractures: a systematic review and network meta-analysis [Cochrane protocol] Print | PDF PROSPERO This information has been provided by the named contact for this review. CRD has accepted this information in good faith and registered the review in PROSPERO. The registrant confirms that the information supplied for this submission is accurate and complete. CRD bears

2020 PROSPERO

18. Acetabular Reconstruction Using a Trabecular Metal Cup with a Novel Pelvic Osteotomy Technique for Severe Acetabular Bone Defect Full Text available with Trip Pro

Acetabular Reconstruction Using a Trabecular Metal Cup with a Novel Pelvic Osteotomy Technique for Severe Acetabular Bone Defect A 79-year-old woman with an extreme bone defect after failed cementless total hip arthroplasty underwent revision arthroplasty with a novel technique that involved cutting the anterior iliac bone and sliding it distally to reconstruct the anterior acetabular wall. A three-dimensional printed bone model enabled understanding the details of the bone defect. The clinical (...) outcome at 3 years after surgery was favorable.The advantages of this technique are twofold, namely, stable fixation of the cup sandwiched between the anterior and posterior walls and reconstruction of the anterior wall using living bone, which allows bone ingrowth into the cup.

2018 Case reports in orthopedics

19. Abdominal and pelvic imaging

Abdominal and pelvic imaging 8600 West Bryn Mawr Avenue South Tower – Suite 800 Chicago, IL 60631 www.aimspecialtyhealth.com Appropriate.Safe.Affordable © 2017 ©©©© 2019 AIM Specialty Health® 2057-0220 CLINICAL APPROPRIATENESS GUIDELINES ADVANCED IMAGING Appropriate Use Criteria: Imaging of the Abdomen and Pelvis EFFECTIVE February 09, 2020 Proprietary Approval and implementation dates for specific health plans may vary. Please consult the applicable health plan for more details. AIM Specialty (...) Diagnostic Intervention 6 Repeat Therapeutic Intervention 7 Imaging of the Abdomen and Pelvis 8 General Information/Overview 8 Scope 8 Technology Considerations 8 Definitions 9 Clinical Indications 11 General Abdominal and Pelvic Indications 11 Congenital and developmental conditions, not otherwise specified 11 Infectious and inflammatory conditions including abscess– not otherwise specified 12 Trauma, not otherwise specified 12 Tumor or neoplasm – not otherwise specified 12 Female Reproductive System

2020 AIM Specialty Health

20. Pharmacological interventions for the prevention of insufficiency fractures and avascular necrosis associated with pelvic radiotherapy in adults. Full Text available with Trip Pro

Pharmacological interventions for the prevention of insufficiency fractures and avascular necrosis associated with pelvic radiotherapy in adults. Pelvic radiotherapy is a treatment delivered to an estimated 150,000 to 300,000 people annually across high-income countries. Fractures due to normal stresses on weakened bone due to radiotherapy are termed insufficiency fractures. Pelvic radiotherapy-related interruption of the blood supply to the hip is termed avascular necrosis and is another (...) of pharmacological interventions in adults over 18 years of age undergoing radical pelvic radiotherapy as part of anticancer treatment for a primary pelvic malignancy. We excluded studies involving radiotherapy for bone metastases. We assessed use of pharmacological interventions at any stage before or during pelvic radiotherapy. Interventions included calcium or vitamin D (or both) supplementation, bisphosphonates, selective oestrogen receptor modulators, hormone replacement therapy (oestrogen or testosterone

2018 Cochrane

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