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Pelvic fixation

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https://www.readbyqxmd.com/read/28350548/pelvic-discontinuity-associated-with-total-hip-arthroplasty-evaluation-and-management
#1
Matthew P Abdel, Robert T Trousdale, Daniel J Berry
Pelvic discontinuity is a challenging complication encountered during revision total hip arthroplasty. Pelvic discontinuity is defined as a separation of the ilium superiorly from the ischiopubic segment inferiorly and is typically a chronic condition in failed total hip arthroplasties in the setting of bone loss. After a history and a physical examination have been completed and infection has been ruled out, appropriate imaging must be obtained, including plain hip radiographs, oblique Judet radiographs, and often a CT scan...
March 27, 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28342586/biomechanical-analysis-of-the-fixation-systems-for-anterior-column-and-posterior-hemi-transverse-acetabular-fractures
#2
Jianyin Lei, Pengfei Dong, Zhiqiang Li, Feng Zhu, Zhihua Wang, Xianhua Cai
OBJECTIVE: The aim of this study was to evaluate the biomechanical properties of common fixation systems for complex acetabular fractures. METHODS: A finite element (FE) pelvic model with anterior column and posterior hemi-transverse acetabular fractures was created. Three common fixation systems were used to fix the posterior wall acetabular fractures: 1. Anterior column plate combined with posterior column screws (group I), 2. Anterior column plate combined with quadrilateral area screws (group II) and 3...
March 22, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28338600/pelvic-fracture-pattern-predicts-the-need-for-hemorrhage-control-intervention-results-of-a-aast-multi-institutional-study
#3
Todd W Costantini, Raul Coimbra, John B Holcomb, Jeanette M Podbielski, Richard Catalano, Allie Blackburn, Thomas M Scalea, Deborah M Stein, Lashonda Williams, Joseph Conflitti, Scott Keeney, Christy Hoey, Tianhua Zhou, Jason Sperry, Dimitra Skiada, Kenji Inaba, Brian H Williams, Joseph P Minei, Alicia Privette, Robert C Mackersie, Brenton R Robinson, Forrest O Moore
BACKGROUND: Early identification of patients with pelvic fractures at risk for severe bleeding requiring intervention is critical. We performed a multi-institutional study to test our hypothesis that pelvic fracture patterns predict the need for a pelvic hemorrhage control intervention. METHODS: This prospective, observational multi-center study enrolled patients with pelvic fracture due to blunt trauma. Inclusion criteria included shock on admission (SBP<90 or HR>120 and base deficit > 5, and the ability to review pelvic imaging...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28326425/bilateral-pelvic-discontinuity-a-unique-condition-characterized-by%C3%A2-high-failure-rates-of-current-treatment
#4
John R Martin, Ian Barrett, Rafael J Sierra, David G Lewallen, Daniel J Berry
BACKGROUND: Bilateral pelvic discontinuity is characterized by complete dissociation of the superior and inferior pelvis secondary to bone loss or fracture. The end result is a freely mobile inferior pelvis at the level of each discontinuity which presents a significant reconstruction challenge. This clinical entity has not been described previously, and the results of surgical treatment are not known. METHODS: We retrospectively reviewed all identified cases of pelvic discontinuity (PD) treated with revision THA at one institution...
December 2016: Arthroplast Today
https://www.readbyqxmd.com/read/28314995/rate-of-complications-due-to-neuromuscular-scoliosis-spine-surgery-in-a-30-years-consecutive-series
#5
Francesco Turturro, Antonello Montanaro, Cosma Calderaro, Luca Labianca, Vincenzo Di Sanzo, Andrea Ferretti
PURPOSE: The aim of this study was to evaluate the rate of intraoperative and postoperative complications in a large series of patients affected by neuromuscular scoliosis. METHODS: It was a monocentric retrospective study. In this study have been considered complications those events that significantly affected the course of treatment, such as getting the hospital stay longer, or requiring a subsequent surgical procedure, or corrupting the final result of the treatment...
March 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28299327/minimum-lateral-bone-coverage-required-for-securing-fixation-of-cementless-acetabular-components-in-hip-dysplasia
#6
Masanori Fujii, Yasuharu Nakashima, Tetsuro Nakamura, Yoshihiro Ito, Toshihiko Hara
Objectives. To determine the minimum lateral bone coverage required for securing stable fixation of the porous-coated acetabular components (cups) in hip dysplasia. Methods. In total, 215 primary total hip arthroplasties in 199 patients were reviewed. The average follow-up period was 49 months (range: 24-77 months). The lateral bone coverage of the cups was assessed by determining the cup center-edge (cup-CE) angle and the bone coverage index (BCI) from anteroposterior pelvic radiographs. Further, cup fixation was determined using the modified DeLee and Charnley classification system...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28293789/development-of-an-ovine-model-for-training-in-vaginal-surgery-for-pelvic-organ-prolapse
#7
A Mansoor, S Curinier, S Campagne-Loiseau, L Platteeuw, B Jacquetin, B Rabischong
INTRODUCTION AND HYPOTHESIS: This aim of this study was to evaluate the feasibility and usefulness of an ovine model for training in vaginal surgery. METHODS: Four senior urogynaecological surgeons and five residents attended five sessions of vaginal surgery for pelvic organ prolapse (POP) in five old multiparous female sheep. Urogynaecological examinations were performed and measurements similar to the POP-Q classification in humans were obtained. Standard POP surgical procedures with and without mesh were performed...
March 14, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28292663/ileal-strangulation-by-a-secondary-perineal-hernia-after-laparoscopic-abdominoperineal-rectal-resection-a-case-report
#8
Kurokawa Tomohiro, Giichiro Tsurita, Kentaro Yazawa, Masaru Shinozaki
INTRODUCITON: We report a recent case of strangulated bowel obstruction due to an incarcerated secondary perineal hernia that developed after laparoscopic rectal resection. PRESENTATION OF CASE: A 75-year-old man undergoing treatment for alcoholic cirrhosis underwent laparoscopic abdominoperineal resection of the rectum (APR) for lower rectal cancer after preoperative chemoradiotherapy. Lung metastases were diagnosed 2 months postoperatively. Ten days after chemotherapy initiation, the patient was hospitalized on an emergency basis due to hepatic encephalopathy...
February 12, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28291409/association-between-bicortical-screw-fixation-at-upper-instrumented-vertebra-and-risk-for-upper-instrumented-vertebra-fracture
#9
Young-Seop Park, Seung-Jae Hyun, Ho Yong Choi, Ki-Jeong Kim, Tae-Ahn Jahng
OBJECTIVE The aim of this study was to investigate the risk of upper instrumented vertebra (UIV) fractures associated with UIV screw fixation (unicortical vs bicortical) and polymethylmethacrylate (PMMA) augmentation after adult spinal deformity surgery. METHODS A single-center, single-surgeon consecutive series of adult patients who underwent lumbar fusion for ≥ 4 levels (that is, the lower instrumented vertebra at the sacrum or pelvis and the UIV of the thoracolumbar spine [T9-L2]) were retrospectively reviewed...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28270223/biomechanical-characteristics-of-fixation-methods-for-floating-pubic-symphysis
#10
Wenhao Song, Dongsheng Zhou, Yu He
BACKGROUND: Floating pubic symphysis (FPS) is a relatively rare injury caused by high-energy mechanisms. There are several fixation methods used to treat FPS, including external fixation, subcutaneous fixation, internal fixation, and percutaneous cannulated screw fixation. To choose the appropriate fixation, it is necessary to study the biomechanical performance of these different methods. The goal of this study was to compare the biomechanical characteristics of six methods by finite element analysis...
March 7, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28270058/internal-fixation-of-s1-s3-iliosacral-screws-and-pubic-screw-as-the-best-configuration-for-unstable-pelvic-fracture-with-unilateral-vertical-sacral-fracture-ao-type-c1-3
#11
Ismail Hadisoebroto Dilogo, Oryza Satria, Jessica Fiolin
BACKGROUND: Although internal fixation is the definitive treatment in unstable pelvic fractures with disruption of the anterior arch and a vertical fracture of the sacrum (AO type C1.3), there have been no agreement of the best technique of internal fixation yet. We aimed to derive comparable objective data on stiffness and load to failure in this type of fracture fixations. METHODS: Synbone was modified into AO type C1.3 fracture model, while treatments were divided into six internal fixation treatment groups using tension band plate (TBP), symphysis pubis plate (SP) with iliosacral screw at S1 and S2 (IS S1-S2), pubic screw (PS) with iliosacral TBP, PS and IS S1-S2, SP and IS S1-S3, PS and S1-S3 and finally PS and IS S1-S3...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28258300/pelvic-and-lower-extremity-physiological-cross-sectional-areas-an-mri-study-of-the-living-young-and-comparison-to-published-research-literature
#12
Juliane Lube, Natasha A M S Flack, Sebastian Cotofana, Orkun Özkurtul, Stephanie J Woodley, Stefan Zachow, Niels Hammer
PURPOSE: Morphological data pertaining to the pelvis and lower extremity muscles are increasingly being used in biomechanical modeling to compare healthy and pathological conditions. Very few data sets exist that encompass all of the muscles of the lower limb, allowing for comparisons between regions. The aims of this study were to (a) provide physiological cross-sectional area (PCSA) data for the pelvic, thigh, and leg muscles in young, healthy participants, using magnetic resonance imaging (MRI), and (b) to compare these data with summarized PCSAs obtained from the literature...
March 3, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28255332/development-of-a-patient-specific-finite-element-model-for-predicting-implant-failure-in-pelvic-ring-fracture-fixation
#13
Vickie Shim, Andreas Höch, Ronny Grunert, Steffen Peldschus, Jörg Böhme
Introduction. The main purpose of this study is to develop an efficient technique for generating FE models of pelvic ring fractures that is capable of predicting possible failure regions of osteosynthesis with acceptable accuracy. Methods. Patient-specific FE models of two patients with osteoporotic pelvic fractures were generated. A validated FE model of an uninjured pelvis from our previous study was used as a master model. Then, fracture morphologies and implant positions defined by a trauma surgeon in the preoperative CT were manually introduced as 3D splines to the master model...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28248894/extensive-corrective-fixation-surgeries-for-adult-spinal-deformity-improve-posture-and-lower-extremity-kinematics-during-gait
#14
Hideyuki Arima, Yu Yamato, Tomohiko Hasegawa, Sho Kobayashi, Go Yoshida, Tatsuya Yasuda, Tomohiro Banno, Shin Oe, Yuki Mihara, Daisuke Togawa, Yukihiro Matsuyama
STUDY DESIGN: Longitudinal cohort. OBJECTIVE: This study aimed to document changes in posture and lower extremity kinematics during gait in patients with adult spinal deformity (ASD) after extensive corrective surgery. SUMMARY OF BACKGROUND DATA: Standing radiographic parameters are typically used to evaluate ASD patients. Previously, preoperative walking and standing posture discrepancy were reported in ASD patients. However, we didn't include comparison between before and after surgery...
February 28, 2017: Spine
https://www.readbyqxmd.com/read/28247980/critical-dimensions-of-trans-sacral-corridors-assessed-by-3d-ct-models-relevance-for-implant-positioning-in-fractures-of-the-sacrum
#15
Daniel Wagner, Lukas Kamer, Takeshi Sawaguchi, R Geoff Richards, Hansrudi Noser, Masafumi Uesugi, Christian Ossendorf, Pol M Rommens
Trans-sacral implants can be used alternatively to sacro-iliac screws in the treatment of osteoporosis-associated fragility fractures of the pelvis and the sacrum. We investigated trans-sacral corridor dimensions, the number of individuals amenable to trans-sacral fixation, as well as the osseous boundaries and shape of the S1 corridor. 3D models were reconstructed from pelvic CT scans from 92 Europeans and 64 Japanese. A corridor of <12 mm was considered critical for trans-sacral implant positioning, and <8 mm as impossible...
March 1, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28247976/bilateral-sacroiliac-luxation-fixation-using-a-single-transiliosacral-pin-surgical-technique-and-clinical-outcomes-in-eight-cats
#16
A Parslow, D J Simpson
OBJECTIVES: A very limited safe anatomical window for transiliosacral implant placement exists in cats (<0·5 cm 2 ). Lag screw fixation requires multiple bilateral implants thus increasing the risk of iatrogenic trauma and implant interference. We describe a safe and effective method for bilateral sacroiliac fixation in cats using a single implant to minimise inadvertent iatrogenic damage to local structures and restore pelvic canal diameter. MATERIALS AND METHODS: Eight cats underwent surgical fixation for traumatic bilateral sacroiliac luxation using a single smooth intramedullary pin...
March 1, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28247077/s2-alar-iliac-screw-placement-under-robotic-guidance-for-adult-spinal-deformity-patients-technical-note
#17
Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng
PURPOSE: S2 alar-iliac (S2AI) screws are generally placed using an open approach, but have recently been shown to be implantable using a minimally invasive approach. Nevertheless, optimal screw positioning, even when supported by fluoroscopic guidance, is challenging in the complex anatomy of the sacral-pelvic area. This work presents our novel technique of S2AI sacropelvic fixation procedures performed with robotic guidance. METHODS: This was a single-center, retrospective, mini case-series of adult spinal deformity patients in need of sacropelvic fixation as part of a longer thoraco-lumbar fusion...
February 28, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28247009/treatment-of-acetabular-fractures-in-older-patients-introduction-of-a-new-implant-for-primary-total-hip-arthroplasty
#18
H Resch, D Krappinger, P Moroder, A Auffarth, M Blauth, J Becker
BACKGROUND: Fractures of the acetabulum in younger patients are commonly treated by open reduction and internal fixation. For elderly patients, stable primary total hip arthroplasty with the advantage of immediate postoperative mobilization might be the adequate treatment. For this purpose, a sufficiently stable fixation of the acetabular component is required. MATERIALS AND METHODS: Between August 2009 and 2014, 30 cases were reported in which all patients underwent total hip arthroplasty additionally to a customized implant designed as an antiprotrusion cage...
February 28, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28241717/-application-of-three-dimensional-printing-personalized-acetabular-wing-plate-in-treatment-of-complex-acetabular-fractures-via-lateral-rectus-approach
#19
J G Mai, C Gu, X Z Lin, T Li, W Q Huang, H Wang, X Y Tan, H Lin, Y M Wang, Y Q Yang, D D Jin, S C Fan
Objective: To investigate reduction and fixation of complex acetabular fractures using three-dimensional (3D) printing technique and personalized acetabular wing-plate via lateral-rectus approach. Methods: From March to July 2016, 8 patients with complex acetabular fractures were surgically managed through 3D printing personalized acetabular wing-plate via lateral-rectus approach at Department of Orthopedics, the Third Affiliated Hospital of Southern Medical University. There were 4 male patients and 4 female patients, with an average age of 57 years (ranging from 31 to 76 years)...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28240619/the-anterior-intra-pelvic-approach-for-acetabular-fractures-utilizing-approach-specific-instruments-and-an-antatomical-preshaped-three-dimensional-suprapectineal-plate
#20
Florian Gras, Ivan Marintschev, Lars Grossterlinden, Markus Rossmann, Isabel Graul, Gunther O Hofmann, Johannes M Rueger, Wolfgang Lehmann
OBJECTIVES: Anatomical acetabular plates were recently introduced to fix acetabular fractures via the intra-pelvic approach. Therefore we asked: I.) Does the preshaped three dimensional suprapectineal plate interfere with or even impair the fracture reduction quality? II.) How often does the anterior intra-pelvic approach need to be extended by the first (lateral) window of the ilioinguinal approach? DESIGN: Observational case series SETTING:: Two Level one Trauma centresPatients / Participants: Patients with unstable acetabular fractures in 2014 INTERVENTION:: Fracture fixation with anatomical-preshaped, three-dimensional suprapectineal plates via the anterior intra-pelvic approach ± the first window of the ilioinguinal approach...
February 23, 2017: Journal of Orthopaedic Trauma
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