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Daniel riew

Joseph L Laratta, Jamal N Shillingford, Nathan Hardy, Joseph M Lombardi, Comron Saifi, Alexander Romanov, Lawrence G Lenke, Ronald A Lehman, K Daniel Riew
STUDY DESIGN: Therapeutic anti-infective trial in rabbitsOBJECTIVE.: The purpose of the present study was to assess the efficacy of intrawound tobramycin powder in terms of eradicating a known bacterial contamination in an Escherichia coli infected rabbit spinal implantation model. SUMMARY OF BACKGROUND DATA: Implant-associated surgical site infections (SSI) remain a dreaded complication of spinal surgery. Currently, over 30% of all spine SSIs are secondary to gram-negative bacteria...
April 10, 2017: Spine
Justin S Smith, Breton Line, Shay Bess, Christopher I Shaffrey, Han Jo Kim, Gregory Mundis, Justin K Scheer, Eric Klineberg, Michael O'Brien, Richard Hostin, Munish Gupta, Alan Daniels, Michael Kelly, Jeffrey L Gum, Frank J Schwab, Virginie Lafage, Renaud Lafage, Tamir Ailon, Peter Passias, Themistocles Protopsaltis, Todd J Albert, K Daniel Riew, Robert Hart, Doug Burton, Vedat Deviren, Christopher P Ames, International Spine Study Group
BACKGROUND: Although adult cervical spine deformity (ACSD) is associated with pain and disability, its health impact has not been quantified in comparison to other chronic diseases. OBJECTIVE: To perform a comparative analysis of the health impact of symptomatic ACSD to US normative and chronic disease values using EQ-5D (EuroQuol-5 Dimensions questionnaire) scores. METHODS: ACSD patients presenting for surgical treatment were identified from a prospectively collected multicenter database...
March 24, 2017: Neurosurgery
Daniel G Kang, Ronald A Lehman, Scott C Wagner, Colleen Peters, K Daniel Riew
STUDY DESIGN: Retrospective analysis. OBJECTIVE: We set out to evaluate the radiographic and patient-reported outcomes following C1-C2 arthrodesis for atlantoaxial osteoarthritis (AAOA) using modern instrumentation and techniques. SUMMARY OF BACKGROUND DATA: Few studies have evaluated outcomes following C1-C2 arthrodesis for AAOA using modern surgical fixation techniques. METHODS: Retrospective analysis of all patients following C1-C2 arthrodesis with recalcitrant AAOA from a single center, single surgeon from 2002 to 2012...
March 2017: Spine
Andrei F Joaquim, K Daniel Riew
OBJECTIVE Cervical disc arthroplasty (CDA) has been demonstrated to be an effective treatment modality for single-level cervical radiculopathy or myelopathy. Its advantages over an anterior cervical discectomy and fusion (ACDF) include motion preservation and decreased reoperations at the index and adjacent segments up to 7 years postoperatively. Considering the fact that many patients have multilevel cervical disc degeneration (CDD), the authors performed a systematic review of the clinical studies evaluating patients who underwent multilevel CDA (2 or more levels)...
February 2017: Neurosurgical Focus
Asdrubal Falavigna, Orlando Righesso, Pedro Guarise da Silva, Carlos Rocca Siri, Jefferson W Daniel, José Carlos Esteves Veiga, Gustavo Borges Laurindo de Azevedo, Luis Eduardo Carelli, Ratko Yurac, Felix Adolfo Sanchez Chavez, Ericson Sfreddo, Andre Cecchini, Marcelo Martins do Reis, Jose Maria Jiménez Avila, K Daniel Riew
OBJECTIVE: To analyze characteristics of type II odontoid fracture (TII-OF), including clinical and radiographic factors, that influence surgical planning in 8 Latin American centers. METHODS: Retrospective chart review was performed of 88 patients with TII-OF between 2004 and 2015 from 8 Latin American centers. Parameters studied included 1) demographic data and causes of TII-OF, 2) clinical and neurologic presentation, 3) characteristics of fracture (degree of odontoid displacement, displacement of odontoid relative to C2 body, anatomy of fracture line, distance between fragments, presence of comminution, contact area between odontoid and C2 body), 4) type of treatment, and 5) clinical and radiographic outcome...
February 2017: World Neurosurgery
Weerasak Singhatanadgige, Worawat Limthongkul, Frank Valone, Wicharn Yingsakmongkol, K Daniel Riew
Study Design Systematic review. Objective To compare laminoplasty versus laminectomy and fusion in patients with cervical myelopathy caused by OPLL. Methods A systematic review was conducted using PubMed/Medline, Cochrane database, and Google scholar of articles. Only comparative studies in humans were included. Studies involving cervical trauma/fracture, infection, and tumor were excluded. Results Of 157 citations initially analyzed, 4 studies ultimately met our inclusion criteria: one class of evidence (CoE) II prospective cohort study and three CoE III retrospective cohort studies...
November 2016: Global Spine Journal
Ryoji Tauchi, Sang-Hun Lee, Jin-Young Kim, Yong-Chan Kim, Colleen Peters, Shiro Imagama, Naoki Ishiguro, Jacob Buchowski, K Daniel Riew
STUDY DESIGN: Retrospective study. PURPOSE: To identify the prevalence of severe headache occurring after cervical posterior surgical fixation (PSF) and to evaluate the clinical and radiological findings associated with severe headache after surgery. OVERVIEW OF LITERATURE: Several studies have reported on the axial pain after cervical surgery. However, to our knowledge, the incidence of severe headache after cervical PSF has not been elucidated...
August 2016: Asian Spine Journal
Weerasak Singhatanadgige, Daniel G Kang, Panya Luksanapruksa, Colleen Peters, K Daniel Riew
STUDY DESIGN: Retrospective analysis. OBJECTIVE: To evaluate the correlation and reliability of cervical sagittal alignment parameters obtained from lateral cervical radiographs (XRs) compared with lateral whole-body stereoradiographs (SRs). METHODS: We evaluated adults with cervical deformity using both lateral XRs and lateral SRs obtained within 1 week of each other between 2010 and 2014. XR and SR images were measured by two independent spine surgeons using the following sagittal alignment parameters: C2-C7 sagittal Cobb angle (SCA), C2-C7 sagittal vertical axis (SVA), C1-C7 translational distance (C1-7), T1 slope (T1-S), neck tilt (NT), and thoracic inlet angle (TIA)...
September 2016: Global Spine Journal
Joseph D Smucker, Scott R Bassuener, Rick C Sasso, K Daniel Riew
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: This study investigates the incidence of long-term dysphagia in cervical disc arthroplasty, and anterior cervical discectomy and fusion (ACDF) patients. SUMMARY OF BACKGROUND DATA: No long-term comparison of dysphagia between cervical arthroplasty and fusion patients has been published. Widely variable short-term postsurgical dysphagia rates have been reported. MATERIALS AND METHODS: Cohorts for this study are patients with single-level cervical degenerative disc disease previously enrolled in a randomized clinical trial comparing cervical arthroplasty and ACDF...
June 27, 2016: Clinical Spine Surgery
Rishi Mugesh Kanna, Asdrubal Falavigna, Pedro Guarise da Silva, Francine Wurzius Quadros, Luiz Henrique Merlin, Lucas Radaelli, Juan Pablo Guyot, Diego Dozza, Daniel K Riew, Délio Martins, Kawaguchi Yoshiharu, S Rajasekaran
BACKGROUND: The number and quality of scientific publications reflects the standards of scientific research in a country. However, the contribution of Indian spine surgeons toward global publications is unknown. The goal is to study the publications of Indian spine surgeons between 2000 and 2013. MATERIALS AND METHODS: A literature search of the publications by Indian spine surgeons was performed using MEDLINE. The search terms used were India and several spine-related terminologies...
May 2016: Indian Journal of Orthopaedics
Moon Soo Park, Seong-Hwan Moon, Hwan-Mo Lee, Seok Woo Kim, Tae-Hwan Kim, Seul Ki Min, Bo-Kyung Suh, K Daniel Riew
STUDY DESIGN: A retrospective study OBJECTIVE:: To evaluate radiographic changes of patients with osteophytes at the anterior border of the caudal vertebral body who were treated with anterior cervical discectomy and fusion (ACDF) using dynamic rotational plates. SUMMARY OF BACKGROUND DATA: Dynamic cervical plates are widely used in surgeries of the anterior cervical spine. One concern in using dynamic plates is that the subjacent anterior osteophytes might act as a bony block and prevent dynamization of the plate...
June 3, 2016: Clinical Spine Surgery
Weerasak Singhatanadgige, Lukas P Zebala, Panya Luksanapruksa, K Daniel Riew
PURPOSE: The aim of this study was to determine a plain radiographic criterion for determining the feasibility of using the standard anterior Smith-Robinson supramanubrial approach for anterior surgery down to T2 or T3. METHODS: The surgical database (2002-2014) was searched to identify patients with anterior cervical surgery to T2 or T3. A method to determine whether a standard anterior Smith-Robinson approach can be used to operate on the upper thoracic levels was evaluated...
May 31, 2016: European Spine Journal
Yasushi Oshima, Michael P Kelly, Kwang-Sup Song, Moon Soo Park, Tapanut Chuntarapas, Katie D Vo, Jin S Yeom, Katsushi Takeshita, K Daniel Riew
Study Design Retrospective cohort. Objective To clarify the sensitivity of C3-C2 spinolaminar line test as a screening tool for the stenosis of C1 space available for the cord (SAC). Methods Spine clinic records from April 2005 to August 2011 were reviewed. The C1 SAC was measured on lateral radiographs, and the relative positions between a C1 posterior arch and the C3-C2 spinolaminar line were examined and considered "positive" when the C1 ring lay ventral to the line. Computed tomography (CT) scans and magnetic resonance imaging (MRI) were utilized to measure precise diameters of C1 and C2 SAC and to check the existence of spinal cord compression...
June 2016: Global Spine Journal
Ryoji Tauchi, Sang-Hun Lee, Colleen Peters, Shiro Imagama, Naoki Ishiguro, K Daniel Riew
Study Design Retrospective study. Objectives Assess demographics, ossification characteristics, surgical outcomes, and complications in patients with both diffuse idiopathic spinal hyperostosis (DISH) and ossification of the posterior longitudinal ligament (OPLL) compared with patients who only have OPLL. Methods Clinical charts and radiographs of all patients treated surgically from February 2004 to July 2012 for cervical myeloradiculopathy due to DISH with OPLL or OPLL alone were reviewed retrospectively...
June 2016: Global Spine Journal
Moon Soo Park, Seong Hwan Moon, Tae Hwan Kim, Jae Keun Oh, Hyung Joon Kim, Kun Tae Park, K Daniel Riew
PURPOSE: There have been a few previous reports regarding the distances between the medial borders of the longus colli to expose the disc space. However, to our knowledge, there are no reports concerning longus colli dissection to expose the uncinate processes. This study was undertaken to assess the surgical relationship between the longus colli muscle and the uncinate process in the cervical spine. MATERIALS AND METHODS: This study included 120 Korean patients randomly selected from 333 who had cervical spine MRIs and CTs from January 2003 to October 2013...
July 2016: Yonsei Medical Journal
Rory K Murphy, Peng Sun, Rowland H Han, Kim J Griffin, Joanne M Wagner, Chester K Yarbrough, Neill M Wright, Ian G Dorward, Daniel K Riew, Michael P Kelly, Paul Santiago, Lukas P Zebala, Kathryn Trinkaus, Wilson Z Ray, Sheng K Song
BACKGROUND: A number of clinical tools exist for measuring the severity of cervical spondylotic myelopathy (CSM). Several studies have recently described the use of non-invasive imaging biomarkers to assess severity of disease. These imaging markers may provide an additional tool to measure disease progression and represent a surrogate marker of response to therapy. Correlating these imaging biomarkers with clinical quantitative measures is critical for accurate therapeutic stratification and quantification of axonal injury...
May 5, 2016: Journal of Neurosurgical Sciences
Han Jo Kim, Venu M Nemani, Chaiwat Piyaskulkaew, Samuel Romero Vargas, K Daniel Riew
STUDY DESIGN: Retrospective case series. PURPOSE: To determine the incidence of cervical radiculopathy requiring operative intervention by level and to report on the methods of treatment. OVERVIEW OF LITERATURE: Cervical radiculopathy is a common cause of pain and can result in progressive neurological deficits. Although the pathology is well understood, the actual incidence of cervical radiculopathy at particular spinal levels ultimately requiring operative intervention is unknown...
April 2016: Asian Spine Journal
Moon Soo Park, Young-Su Ju, Seong-Hwan Moon, Tae-Hwan Kim, Jae Keun Oh, Melvin C Makhni, K Daniel Riew
STUDY DESIGN: National population-based cohort study. OBJECTIVE: To compare the reoperation rates between cervical spondylotic radiculopathy and myelopathy in a national population of patients. SUMMARY OF BACKGROUND DATA: There is an inherently low incidence of reoperation after surgery for cervical degenerative disease. Therefore, it is difficult to sufficiently power studies to detect differences between reoperation rates of different cervical diagnoses...
October 15, 2016: Spine
Moon Soo Park, Young-Su Ju, Seong-Hwan Moon, Tae-Hwan Kim, Jae Keun Oh, Melvin C Makhni, K Daniel Riew
STUDY DESIGN: National population-based cohort study. OBJECTIVE: To evaluate reoperation rates of cervical spine surgery for cervical degenerative conditions utilizing a national population database. SUMMARY OF BACKGROUND DATA: There is an inherently low incidence of reoperation after surgery for cervical degenerative disease. Therefore, it is difficult to sufficiently power studies to detect differences between reoperation rates of different cervical surgical procedures...
October 1, 2016: Spine
Moon Soo Park, Seong-Hwan Moon, Tae-Hwan Kim, Jae Keun Oh, Ji Hoon Nam, Jae Kyun Jung, K Daniel Riew
STUDY DESIGN: Retrospective study. PURPOSE: To propose a new radiographic index for occipito-cervical instability. OVERVIEW OF LITERATURE: Symptomatic atlanto-occipital instability requires the fusion of the atlanto-occipital joint. However, measurements of occipito-cervical translation using the Wiesel-Rothman technique, Power's ratio, and basion-axial interval are unreliable because the radiologic landmarks in the occipito-cervical junction lack clarity in radiography...
February 2016: Asian Spine Journal
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