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https://www.readbyqxmd.com/read/29349957/-choices-of-the-internal-fixation-and-approaches-on-unstable-pelvic-ring-fractures
#1
Da-Wei Bi, Gang Zu, Lei Han, Yi-Min Chen, Hai-Tao Ma, Gang-Feng Hu, Yuan Zhu
OBJECTIVE: To discuss the suitable surgical approach and the internal fixation of unstable pelvic pelvic fractures. METHODS: From May 2010 to May 2015, 45 patients with unstable pelvic fractures were treated with different approaches and fixations, including 38 males and 7 females with an average age of 45 years ranging from 21 to 61 years. The course was within 2 weeks. According to Young-Burg classification, 23 patients were lateral compression injuries, 6 patients were vertical shearing injuries, 16 patients were anterior-posterior compression injuries...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349955/-clinical-application-of-percutaneous-iliosacral-screws-combined-with-pubic-ramus-screws-in-tile-b-pelvic-fracture
#2
Qi-Fei Xu, Kui-Ran Lin, Dai-Jie Zhao, Song-Qin Zhang, Sheng-Kai Feng, Chen Li
OBJECTIVE: To investigate the application and effect of minimally invasive percutaneous anterior pelvic pubic ramus screw fixation in Tile B fractures. METHODS: A retrospective review was conducted on 56 patients with posterior pelvic ring injury combined with fractures of anterior pubic and ischiadic ramus treated between May 2010 and August 2015, including 31 males and 25 females with an average age of 36.8 years old ranging from 35 to 65 years old. Based on the Tile classification, there were 13 cases of Tile B1 type, 28 cases of Tile B2 type and 15 cases of Tile B3 type...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29338196/a-method-for-high-frequency-underway-n2-fixation-measurements-flow-through-incubation-acetylene-reduction-assays-by-cavity-ring-down-laser-absorption-spectroscopy-faracas
#3
Nicolas Cassar, Weiyi Tang, Hans Gabathuler, Kuan Huang
Because of the difficulty in resolving the large variability of N2 fixation with current methods which rely on discrete sampling, the development of new methods for high resolution measurements is highly desirable. We present a new method for high-frequency measurements of aquatic N2 fixation by continuous flow-through incubations and spectral monitoring of the acetylene (C2H2, a substrate analog for N2) reduction to ethylene (C2H4). In this method, named "Flow-through incubation Acetylene Reduction Assays by Cavity ring-down laser Absorption Spectros-copy" (FARACAS), dissolved C2H2 is continuously admixed with seawater upstream of a continuous-flow stirred-tank reactor (CFSR) in which C2H2 reduction takes place...
January 17, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29322211/-within-ring-based-sacroiliac-rod-fixation-may-overcome-the-weakness-of-spinopelvic-fixation-for-unstable-pelvic-ring-injuries-technical-notes-and-clinical-outcomes
#4
Kentaro Futamura, Tomonori Baba, Atsuhiko Mogami, Akio Kanda, Osamu Obayashi, Hideaki Iwase, Kazuo Kaneko
PURPOSE: Spinopelvic fixation and triangular osteosynthesis give firm internal fixation for unstable pelvic ring injuries (UPRI), but with sacrifice of mobility of the lumbar spine. Here, we describe the procedure and outcomes of a new approach, which we refer to as "within ring"-based sacroiliac rod fixation (SIRF). METHODS: The patient was placed in a prone position and longitudinal skin incisions were made at the medial margins of the bilateral posterior superior iliac spines (PSIS)...
January 10, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29315199/a-waist-hip-ratio-surrogate-more-predictive-than-bmi-of-wound-complications-following-pelvic-and-acetabulum-surgery
#5
Todd Jaeblon, Kevin J Perry, Joseph A Kufera
OBJECTIVES: To determine if a novel surrogate of waist hip ratio (WHR) is more predictive of wound complications following pelvis or acetabulum stabilization than BMI, and describe the method of measuring a WHR proxy (WHRp). DESIGN: Retrospective review. SETTING: One Level-1 Trauma Center PATIENTS:: 161 patients following operative repair of pelvis and acetabulum fractures. INTERVENTION: Operative stabilization of a pelvic ring injury or acetabular fracture MAIN OUTCOME MEASUREMENTS:: Infection (pin, superficial, deep), Wound healing complication METHODS:: We retrospectively reviewed 161 subjects following operative repair of pelvic and acetabular fractures...
January 8, 2018: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29310362/wrapping-grafting-for-congenital-pseudarthrosis-of-the-tibia-a-preliminary-report
#6
An Yan, Hai-Bo Mei, Kun Liu, Jiang-Yan Wu, Jin Tang, Guang-Hui Zhu, Wei-Hua Ye
OBJECTIVE: Treatment of congenital pseudarthrosis of the tibia (CPT) remains a challenge. The autogenic iliac bone graft is important consistent of treatment for CPT. The purpose of this study was to investigate the role of wrapping autogenic iliac bone graft in improvement of the curing opportunities of CPT. METHODS: We combined Ilizarov fixator with intramedullary rodding of the tibia and wrapping autogenic iliac bone graft for treatment 51 cases of CPT between 2007 and 2010...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29310353/complex-pelvic-ring-injuries-associated-with-floating-knee-in-a-poly-trauma-patient-a-case-report
#7
Yuebin Zhou, Honggang Guo, Zhiwei Cai, Yuan Zhang
RATIONALE: Complex pelvic ring fracture associated with floating knee is comparatively rare which usually results from high-energy trauma including vehicle-related accidence, falls from height, and earthquake-related injury. To our knowledge, few literatures have documented such injuries in the individual patient. Management of both injuries present challenges for surgical management and postoperative care. The purpose of this study is to prove the feasibility and benefits of damage control orthopedics (DCO)...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29307021/cerebellar-infarction-after-posterior-direct-reduction-and-fixation-to-treat-an-unstable-jefferson-fracture-a-case-report
#8
Seung Hwan Baek, Seung Ho Yoo, Kyoung Rai Cho, Jun Jae Shin
A 42-year-old man had an unstable Jefferson type IV atlas fracture with unilateral vertebral artery occlusion after a diving accident. We performed C1-ring reconstruction with a crosslink rod and C2 fixation to directly reduce the fracture fissure. Within 6 h, cerebellar hemisphere infarction developed. After decompressive craniectomy, duroplasty, and release of the vertebral artery occlusion caused by the transfixing rod, a postoperative computed tomography angiogram showed that blood flow in the right vertebral artery improved...
January 6, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29298263/subtubercle-osteotomy-for-medial-compartment-osteoarthritis-of-the-knee-using-ilizarov-technique-survival-analysis-and-clinical-outcomes
#9
Stephen J Warner, Daniel P O'Connor, Mark R Brinker
BACKGROUND: High tibial osteotomy with acute correction and internal fixation can be used to correct malalignment and malorientation and reduce symptoms in patients with medial compartment osteoarthritis of the knee. To address the inadequacies of this technique, we performed a series of subtubercle tibial osteotomy (STO) procedures using circular ring fixation to correct knee varus malalignment and joint malorientation. The purpose of this study was to analyze the ability of this technique to delay subsequent knee arthroplasty and decrease symptoms...
January 3, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29277392/minimally-invasive-anterior-pelvic-internal-fixation-an-anatomic-study-comparing-pelvic-bridge-to-infix
#10
Lee M Reichel, Lauren M MacCormick, Anthony J Dugarte, Amir R Rizkala, Sara C Graves, Peter A Cole
OBJECTIVES: Anterior external fixation for pelvic ring fractures has shown to effectively improve stability and reduce mortality. However, these fixators can be associated with substantial morbidity such as pin tract infection, premature loss of fixation, and decreased quality of life in patients. Recently, two new methods of subcutaneous anterior pelvic internal fixation have been developed; the INFIX and the Pelvic Bridge. These methods have the purported advantages of lower wound complications, less surgical site pain, and improved quality of life...
December 19, 2017: Injury
https://www.readbyqxmd.com/read/29273093/patient-related-outcome-of-unstable-pelvic-ring-fractures-stabilized-with-a-minimal-invasive-screw-rod-system
#11
Maximilian Kerschbaum, Nadine Hausmann, Michael Worlicek, Christian Pfeifer, Michael Nerlich, Paul Schmitz
BACKGROUND: Clinical and radiological outcomes of operatively treated unstable pelvic ring fractures are well documented, whereas little is known about the patient's related outcome. The purpose of this study is to evaluate the patient-reported outcome after minimal invasive treatment of pelvic ring fractures using the SF-36 and EQ-5D medical outcome scores. METHODS: Patients with unstable pelvic ring fractures treated in our trauma department with a minimal invasive screw-rod system between 01/2004 and 12/2014 were included...
December 22, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/29258687/analysis-of-mortality-and-fixation-failure-in-geriatric-fractures-using-quantitative-computed-tomography
#12
Tyler S Pidgeon, Joey P Johnson, Matthew E Deren, Andrew R Evans, Roman A Hayda
OBJECTIVES: While osteoporosis has been shown to be a contributing factor in low energy fractures in the elderly, limited data exists regarding the correlation of bone mineral density (BMD) and T-Scores to mortality and failure of fracture fixation. This study seeks to determine the relationship between femoral neck BMD in elderly patients with typical geriatric fractures and mortality and fracture fixation failure using Quantitative Computed Tomography (QCT). MATERIALS AND METHODS: Patients over the age of 65 who sustained fractures of the proximal humerus, distal radius, pelvic ring, acetabulum, hip, proximal tibia, and ankle who also underwent a CT scan that included an uninjured femoral neck were retrospectively reviewed...
December 15, 2017: Injury
https://www.readbyqxmd.com/read/29247322/a-biomechanical-study-of-sacroiliac-rod-fixation-for-unstable-pelvic-ring-injuries-verification-of-the-within-ring-concept
#13
Kentaro Futamura, Tomonori Baba, Atsuhiko Mogami, Itaru Morohashi, Osamu Obayashi, Hideaki Iwase, Kazuo Kaneko
PURPOSE: The aim of this study was to compare the fixation power of sacroiliac rod fixation (SIRF), which was developed based on our original "within ring" concept to exclude the lumbar vertebra from the fixation range, and spinopelvic fixation (SPF) in a biomechanical experiment. METHODS: SPF and SIRF were applied to the posterior element in four bones each with the pelvic ring fracture model (AO/OTA classification 61-C1.3). A 300-N axial force was loaded on the fifth lumbar vertebra of the simulated pelvis...
December 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29244697/occipitocervical-fusion-for-severe-atlantoaxial-dislocation-in-an-underdeveloped-child-with-chondrodysplasia-punctata-a-case-report
#14
Yuki Tanaka, Kei Watanabe, Keiichi Katsumi, Masayuki Ohashi, Keisuke Nagasaki, Toru Hirano
CASE: We present a case of brachytelephalangic chondrodysplasia punctata with a severe atlantoaxial dislocation in an underdeveloped child. The patient underwent halo jacket application using 10 halo pins with <1 lb/in of torque, followed by posterior occipitocervical fusion with onlay rib and iliac autografts. After bone grafts and replacement of the halo ring multiple times, successful osseous fusion had been achieved by the 2-year follow-up. CONCLUSION: Although simple bone-grafting with a halo jacket is useful in underdeveloped patients with skeletal dysplasia, the complications related to halo fixation, including cranial bone perforation, and the patient's neurological status must be carefully monitored...
January 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29238871/minimally-invasive-stabilisation-of-posterior-pelvic-ring-instabilities-with-pedicle-screws-connected-to-a-transverse-rod
#15
Hu Wang, Ya-Hui Fu, Chao Ke, Yan Zhuang, Kun Zhang, Xing Wei, Zhong Li, Jin-Lai Lei, Bin-Fei Zhang, Ping Liu
PURPOSE: The goal was to evaluate the clinical outcomes, quality of reduction and complications of pelvic fractures treated by minimally invasive stabilisation of posterior pelvic ring instabilities with pedicle screws connected to a transverse rod. METHODS: Retrospective analysis of prospectively collected data in a consecutive patient series with pelvic fractures treated by minimally invasive stabilisation of posterior pelvic ring instabilities with pedicle screws between January 2010 and January 2016...
December 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29234650/experience-in-fixation-of-infected-non-union-tibia-by-ilizarov-technique-a-retrospective-study-of-42-cases
#16
Jimmy Joseph Meleppuram, Syed Ibrahim
Objective: The aim of the study is to evaluate the clinical and functional outcome in treatment of infected tibial nonunion by the Ilizarov method. Methods: The authors retrospectively analyzed 42 patients with infected tibial nonunion with bone loss; shortening and deformity treated at this institution during the period of February 2012 to April 2015 were included in the study. The results were evaluated according to Association for the Study and Application of the Methods of Ilizarov (ASAMI) criteria...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29233005/unimolecular-dissociation-of-anions-derived-from-succinic-acid-h2su-in-the-gas-phase-hsu-and-clmgsu-relationship-to-co2-fixation
#17
Joakim S Jestilä, Einar Uggerud
Electrospray ionization of mixtures of succinic acid (here denoted H2Su) and magnesium chloride in water/methanol give rise to ions of the type ESu- (E = H or ClMg). The unimolecular dissociation of these ions was studied by collisionally induced dissociation mass spectrometry and interpreted by quantum chemical calculations (density functional theory and the composite Gaussian-4 method) of relevant parts of the potential energy surfaces. The major dissociation pathways from HSu- were seen to be dehydration and decarboxylation, while ClMgSu- mainly undergoes decarboxylation...
January 1, 2017: European Journal of Mass Spectrometry
https://www.readbyqxmd.com/read/29223929/the-minimum-monitoring-signal-to-noise-ratio-for-off-axis-signals-and-its-implications-for-directional-hearing-aids
#18
Alan W Archer-Boyd, Jack A Holman, W Owen Brimijoin
The signal-to-noise ratio (SNR) benefit of hearing aid directional microphones is dependent on the angle of the listener relative to the target, something that can change drastically and dynamically in a typical group conversation. When a new target signal is significantly off-axis, directional microphones lead to slower target orientation, more complex movements, and more reversals. This raises the question of whether there is an optimal design for directional microphones. In principle an ideal microphone would provide the user with sufficient directionality to help with speech understanding, but not attenuate off-axis signals so strongly that orienting to new signals was difficult or impossible...
January 2018: Hearing Research
https://www.readbyqxmd.com/read/29221479/in-screw-polymethylmethacrylate-augmented-sacroiliac-screw-for-the-treatment-of-fragility-fractures-of-the-pelvis-a-prospective-observational-study-with-1-year-follow-up
#19
Andreas Höch, Philipp Pieroh, Ralf Henkelmann, Christoph Josten, Jörg Böhme
BACKGROUND: The incidence of pelvic ring fractures in the elderly significantly increased. Because of persistent pain and immobilization associated with this injury, surgical treatment is recommended. To minimise comorbidities and surgical risk, percutaneous techniques are becoming more relevant. In-screw cement augmentation of sacroiliac screw fixation is a promising procedure; however, clinical follow-up data remain scarce. This study investigated the safety and possible complications of the procedure along with a 1-year follow-up...
December 8, 2017: BMC Surgery
https://www.readbyqxmd.com/read/29209809/reduction-and-temporary-stabilization-of-tile-c-pelvic-ring-injuries-using-a-posteriorly-based-external-fixation-system
#20
Murphy P Martin, David Rojas, Cyril Mauffrey
Tile C pelvic ring injuries are challenging to manage even in the most experienced hands. The majority of such injuries can be managed using percutaneous reduction techniques, and the posterior ring can be stabilized using percutaneous transiliac-transsacral screw fixation. However, a subgroup of patients present with inadequate bony corridors, significant sacral zone 2 comminution or significant lateral/vertical displacement of the hemipelvis through a complete sacral fracture. Percutaneous strategies in such circumstances can be dangerous...
December 5, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
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