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Dong Kwang Seo, Moon Kyu Kim, Soo Jung Choi, Jun Young Sohn, Young Ki Kim, Eui Kyun Jeong, Jung-Ki Ha, Chung Hwan Kim, Jin Hoon Park
STUDY DESIGN: This is a case series of device failure patients. OBJECTIVE: To identify poor candidates for anterior cervical discectomy and fusion (ACDF) using an anchored cage. SUMMARY OF BACKGROUND DATA: An anchored cage has been used as an alternative implant for ACDF surgery because of ease of use, relatively acceptable fusion rate, and lower risk of plate-related complications, including dysphagia. MATERIALS AND METHODS: We retrospectively reviewed the outcomes of 36 patients who underwent ACDF using an anchored cage between January 2012 and December 2013...
October 19, 2016: Clinical Spine Surgery
Harish Kempegowda, Raveesh Richard, Amrut Borade, Akhil Tawari, Abby M Howenstein, Erik N Kubiak, Michael Suk, Daniel S Horwitz
OBJECTIVES: The purpose of this study was to evaluate the role and the necessity of radiographs and office visits obtained during follow-up of intertrochanteric hip injuries. DESIGN: Retrospective study SETTING:: Two level I trauma centers. PATIENTS: 465 elderly patients who were surgically treated for an intertrochanteric fracture of the femur at two level I trauma centers between January 2009 and August 2014 were retrospectively identified from orthopaedic trauma databases...
August 16, 2016: Journal of Orthopaedic Trauma
David Sanders, Dianne Bryant, Christina Tieszer, Abdel Lawendy, Mark MacLeod, Steven Papp, Liew Allan, Viskontas Darius, Coles Chad, Gurr Kevin, Carey Tim, Gofton Wade, Bailey Chris, Bartley Debra, Andrew Trenholm, Stone Trevor, Leighton Ross, Julia Foxall, Mauri Zomar, Kelly Trask
OBJECTIVES: To compare outcomes in elderly patients with intertrochanteric hip fractures treated with either the sliding hip screw (SHS) or InterTAN intramedullary device (IT). DESIGN: Prospective, randomized, multi-centre clinical trial SETTING:: Five level 1 trauma centresPatients/Participants: 249 patients aged 55 years or older with AO/OTA 31A1 (43) and OA/OTA 31A2 (206) fractures were prospectively enrolled and followed for 12 months. INTERVENTION: Computer generated randomization to either IT (n=123) or SHS (n=126)...
September 30, 2016: Journal of Orthopaedic Trauma
Ümit Aygün, Yalkçn Çalçk, Barçş Alkan, Cengiz Işçk
In this study, we present the case of a 42-year-old man with a fracture and dislocation of the left talus neck, and a fracture of the right talus neck due to a fall. This kind of fracture can be considered rare, and thus few cases have been reported. Fracture fixation was provided through cannulated screws on either side. Splints were removed after 6 weeks, and passive/active joint movement exercises were started. The patient was able to walk with partial weightbearing at 2 months and with full weightbearing at 3 months...
September 2, 2016: Journal of the American Podiatric Medical Association
David S Freedman, Joseph B Schroeder, Gregory I Telian, Zhengyang Zhang, Smrithi Sunil, Jason T Ritt
OBJECTIVE: Behavioral neuroscience studies in freely moving rodents require small, light-weight implants to facilitate neural recording and stimulation. Our goal was to develop an integrated package of 3D printed parts and assembly aids for labs to rapidly fabricate, with minimal training, an implant that combines individually positionable microelectrodes, an optical fiber, zero insertion force (ZIF-clip) headstage connection, and secondary recording electrodes, e.g. for electromyography (EMG)...
October 20, 2016: Journal of Neural Engineering
Ryoko Uesato, Satoshi Toh, Yoshimitsu Hayashi, Keiichiro Maniwa, Yasuyuki Ishibashi
In scaphoid fractures, delayed diagnosis and nonunion are fairly common as a result of several factors, including the difficulty of radiographic diagnosis of non-displaced fractures and underestimation of the injury by the patient. Main factors to consider when deciding treatment are the type of fracture and fracture stability. In the stable nonunion (Type D1 according to the Filan and Herbert classification, or linear type of Ikeda's classification), percutaneous screw fixation without bone graft is recommended...
October 19, 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Qingqi Yan, Yumei Wang, Wawat Rodiahwati, Antje Spiess, Michael Modigell
Screw press processing of biomass can be considered as a suitable mechanically based pretreatment for biofuel production since it disrupts the structure of lignocellulosic biomass with high shear and pressure forces. The combination with chemical treatment has been suggested to increase the conversion of lignocellulosic biomass to fermentable sugars. Within the study, the synergetic effect of alkaline (sodium hydroxide, NaOH) soaking and screw press pretreatment on wheat straw was evaluated based on, e.g., sugar recovery and energy efficiency...
October 19, 2016: Bioprocess and Biosystems Engineering
J Tayierjiang, N Waresijiang, H Wang
Objective: To evaluate the clinical results of the patients with severe kyphosis and paraplegia in different spine segment due to tuberculosis of thoracic and lumbar had been treated by one stage posterior surgical procedure to debriment of lesion and titian mesh bone fusion with internal fixation by pedicle screw system. Method: From May 2008 to March 2014, there were total 30 patients with severe kyphosis and paraplegia in different spine segment due to tuberculosis of thoracic and lumbar in Department of Orthopaedics, the People's Hospital of Xinjiang Uygur Autonoumy Region...
October 11, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Pooria Hosseini, Colin Nnadi, Ľuboš Rehák, Martin Repko, Michael Grevitt, Ufuk Aydinli, Allen Carl, Jeff Pawelek, Dennis Crandall, Behrooz A Akbarnia
STUDY DESIGN: A prospective, nonrandomized, multicenter study. OBJECTIVES: The purpose of this study was to evaluate the amount of motion present at instrumented but unfused segments and at motion segments adjacent to the instrumentation following application of a new posterior apical short-segment correction technique for correcting adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: High-density pedicle screw instrumentation and posterior arthrodesis of all instrumented levels is the most common surgical treatment for AIS stabilization...
October 15, 2016: Spine
H Oda, M Sandou, C-M Lin, M Kamata, T Kawata
AIM: The reported effects of Bionator treatment in patients with mandibular retrognathism are conflicting. This study evaluated the changes in craniofacial morphology resulting from treatment with a Bionator, based on measurement percentiles previously reported, to clarify the mechanism of the effect of this commonly used functional device. MATERIALS AND METHODS: Study Design: Retrospective. SETTING: A private orthodontic clinic. PARTICIPANTS: Forty-two children (mean age, 10...
September 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
Armando Lopes, Paulo Maló, Miguel de Araújo Nobre, Elena Sánchez-Fernández, Inês Gravito
BACKGROUND: There is a necessity of studies documenting the long-term outcome of full-arch flapless rehabilitations. PURPOSE: To evaluate the 7 years implant and prosthesis survival rate and 5-years marginal bone loss of full-arch fixed prosthetic rehabilitations supported by implants in immediate function with the All-on-4(®) treatment concept using a computer guided surgical protocol (NobelGuide(®) , Nobel Biocare). MATERIALS AND METHODS: This retrospective clinical study included 111 edentulous patients (n = 53 bruxers; n = 21 smokers; n = 59 systemically compromised), rehabilitated between February 2005 and November 2010 with 532 implants with the All-on-4(®) treatment concept using NobelGuide(®) ...
October 18, 2016: Clinical Implant Dentistry and related Research
Xiang-Yao Sun, Xi-Nuo Zhang, Yong Hai
PURPOSE: This study evaluated differences in outcome variables between percutaneous, traditional, and paraspinal posterior open approaches for traumatic thoracolumbar fractures without neurologic deficit. METHODS: A systematic review of PubMed, Cochrane, and Embase was performed. In this meta-analysis, we conducted online searches of PubMed, Cochrane, Embase using the search terms "thoracolumbar fractures", "lumbar fractures", ''percutaneous'', "minimally invasive", ''open", "traditional", "posterior", "conventional", "pedicle screw", "sextant", and "clinical trial"...
October 18, 2016: European Spine Journal
Narges Shayesteh Moghaddam, Ahmadreza Jahadakbar, Amirhesam Amerinatanzi, Mohammad Elahinia, Michael Miller, David Dean
: The aim of this study is to investigate the behavior of the healthy mandible under maximum molar bite force to demonstrate the problems associated with the current standard of care procedures for mandibular segmental defect reconstruction (ie, use of Ti-6Al-4V hardware and either a single- or double-barrel fibular graft). With current Ti-6Al-4V mandibular reconstruction hardware, there is a significant stiffness mismatch among the hardware, graft, and the remaining host anatomy. How the distribution of mechanical forces through the mandible is altered after a segmental bone loss and reconstruction is incompletely understood...
September 2016: Plastic and Reconstructive Surgery. Global Open
Haruki Funao, Khaled M Kebaish, Norihiro Isogai, Takahiro Koyanagi, Morio Matsumoto, Ken Ishii
BACKGROUND: Spondylodiscitis still remains a serious problem especially in immunocompromised patients. Surgery is necessary when non-surgical treatment is unsuccessful. Although minimally invasive spine stabilization (MISt) with percutaneous pedicle screws is less invasive, percutaneous sacropelvic fixation techniques are not common practice. Here, we describe two cases in which spondylodiscitis in the lumbosacral spine was treated with a percutaneous stabilization using S2 alar-iliac (S2AI) screw technique...
October 15, 2016: World Neurosurgery
Navraj S Nagra, Dmitri van Popta, Sigrid Whiteside, Edward M Holt
OBJECTIVES: The aim of this study was to analyze the changes in hemoglobin level and to determine a suitable timeline for post-operative hemoglobin monitoring in patients undergoing fixation of femoral neck fracture. PATIENTS AND METHODS: Patients who underwent either dynamic hip screw (DHS) fixation (n = 74, mean age: 80 years) or hip hemiarthroplasty (n = 104, mean age: 84 years) for femoral neck fracture were included into the study. The hemoglobin level of the patients was monitored perioperatively...
October 15, 2016: Acta Orthopaedica et Traumatologica Turcica
Ali Nourbakhsh, Fletcher Preuss, Michael Hadeed, Adam Shimer
STUDY DESIGN: Case report. OBJECTIVE: To describe a young adult with a pars defect undergoing percutaneous direct fixation using intraoperative Computed Tomography (CT) scan. SUMMARY OF BACKGROUND DATA: Direct pars repair has been utilized since the 1960 s. There are no reports in the literature describing a percutaneous technique. METHODS: Using a percutaneous technique under the guide of intraoperative CT scan, a cannulated partially threaded screw was inserted across the pars defect...
October 17, 2016: Spine
Shao-Rui Liu, Xue-Fei Song, Zheng-Kang Li, Qin Shen, Xian-Qun Fan
OBJECTIVE: With orbital floor fracture incidence rates increasing year by year, many patients require surgical treatment to improve diplopia, limitation of extraocular muscle movement (EOM), enophthalmos, and midface appearance. With the use of high-density polyethylene, titanium screws, titanium plate, and titanium mesh to repair an orbital floor fracture, enophthalmos and midfacial deformity correction procedures have made great progress. However, attenuating diplopia and the limitation of EOM are still difficult problems to prevent...
October 14, 2016: Journal of Craniofacial Surgery
Karl Stoffel, Ivan Zderic, Florian Gras, Christoph Sommer, Ursula Eberli, David Mueller, Martin Oswald, Boyko Gueorguiev
OBJECTIVES: To evaluate the biomechanical performance of Femoral Neck System (FNS) in comparison to established methods for fixation of femoral neck fractures in a cadaveric model. METHODS: Twenty pairs of fresh-frozen human cadaveric femora were instrumented either with DHS-Screw, DHS-Blade, 3CS or with FNS in a partially paired design. The specimens were randomized to two paired treatment groups based on the BMD, namely DHS-Screw/DHS-Blade and FNS/3CS. A reduced unstable femoral neck fracture with postero-caudal comminution, AO/OTA 31-B2...
October 13, 2016: Journal of Orthopaedic Trauma
Chase Bennett, Anthony Behn, Adam Daoud, Sean Nork, Bruce Sangeorzan, Gregory Dikos, Julius Bishop
OBJECTIVES: The preferred method of fixation for posterior malleolus fractures remains controversial, and practices vary widely among surgeons. The purpose of this study was to compare anterior-to-posterior lag screws to posterior buttress plating for fixation of posterior malleolus fractures in a human cadaveric model. METHODS: Posterior malleolus fractures involving 30% of the distal tibial articular surface were created in seven pairs of fresh frozen cadaveric ankles...
October 17, 2016: Journal of Orthopaedic Trauma
Shiro Imagama, Noriaki Kawakami, Yuji Matsubara, Taichi Tsuji, Tetsuya Ohara, Yoshito Katayama, Naoki Ishiguro, Tokumi Kanemura
STUDY DESIGN: Retrospective clinical study. OBJECTIVE: To investigate adjacent segment degeneration (ASD) at 5 years after L4/5 posterior lumbar interbody fusion with pedicle screw instrumentation and L4/5 decompression surgery using plain radiographs, computed tomography (CT), and magnetic resonance imaging (MRI), with the evaluation of annual changes on MRI. SUMMARY OF BACKGROUND DATA: Methods of evaluation have been inconsistent among studies of ASD...
November 2016: Clinical Spine Surgery
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