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https://www.readbyqxmd.com/read/28528359/anatomic-basis-of-le-fort-1-impaction-osteotomy-a-radiological-study
#1
Rivka Bendrihem, Christian Vacher, Audrey Fohlen, Jean-Pierre Pelage
PURPOSE: In Le Fort 1 osteotomy when a maxillary impaction is necessary, surgeons have to face different anatomical problems. (1) To determine the best bone resection route, they have to consider the situation of dental roots, infraorbital foramen and maxillary artery. (2) In case of Le Fort 1 osteotomy combined with a mandibular sagittal split osteotomy, the palate has to be replaced in horizontal position although there is no anatomical landmark. (3) In case of Gummy smiles, it can be due to either long face or short upper lip...
May 20, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28525481/comparison-of-the-clinical-and-radiographic-results-between-cervical-artificial-disk-replacement-and-anterior-cervical-fusion-a-6-year-prospective-nonrandomized-comparative-study
#2
Wei Tian, Kai Yan, Xiao Han, Jie Yu, Peihao Jin, Xiaoguang Han
STUDY DESIGN: Prospective nonrandomized comparative study. OBJECTIVE: To compare the long-term clinical and radiographic results of cervical artificial disk replacement (CADR) and anterior cervical discectomy and fusion (ACDF), and to provide our evidence if CADR could reduce adjacent segment degeneration (ASD). SUMMARY OF BACKGROUND DATA: CADR is widely used in spine surgery today. Despite the short-term results of it having been ascertained, the long-term results are still under observation...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525473/is-total-disk-replacement-a-cost-effective-treatment-for-cervical-degenerative-disk-disease
#3
Bernd Wiedenhöfer, Joachim Nacke, Mike Stephan, Wiltrud Richter, Claus Carstens, Markus Eichler
STUDY DESIGN: A retrospective study. OBJECTIVE: The objective of this study was to assess the cost-effectiveness and clinical outcome of motion-preserving versus fusion procedures in cervical spine surgery. SUMMARY OF BACKGROUND DATA: During the last decade there has been a huge growth in spine surgery with a concurrent increase in the economic burden. Currently, there appear to be no differences in clinical outcome between cervical total disk replacement (TDR) and spinal fusion (SF)...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525471/cervical-disk-replacement-with-discover-versus-fusion-in-a-single-level-cervical-disk-disease-a-prospective-single-center-randomized-trial-with-a-minimum-2-year-follow-up
#4
Marjan Rožanković, Sergej M Marasanov, Miroslav Vukić
STUDY DESIGN: Prospective randomized study. OBJECTIVE: To compare the clinical outcome after Discover arthroplasty versus anterior cervical discectomy and fusion (ACDF) in patients treated for symptomatic single-level cervical disk disease. SUMMARY OF BACKGROUND DATA: ACDF is still the gold standard for surgical treatment of cervical spine degenerative disk disease. However, results of many studies suggest that it may cause degenerative changes at levels immediately above and below the fusion, known as adjacent segment degenerative disease...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28513885/biomechanical-function-of-a-balloon-nucleus-pulposus-replacement-system-a-human-cadaveric-spine-study
#5
Taekyeong Lee, Tae-Hong Lim, Sang-Heon Lee, Joo-Han Kim, Junghwa Hong
With recent advances in motion-sparing techniques in spine surgery, disc nucleus replacement (DNR) has been introduced as a viable method to restore the biomechanical functions of the spine. Several methods of DNR have been proposed in the literature. However, the risk of device migration or extrusion is a major issue that should be addressed for a successful DNR. DNR using a balloon nucleus (BN) filled with pressurized fluid may be capable of reducing such risks while preserving the advantages of DNR. The objective of this study was to investigate the biomechanical functionalities of the human cadaveric lumbar motion segments with a custom made BN filled with saline at internal fluid pressure of 0...
May 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28507956/an-unusual-case-of-giant-cell-tumor-of-first-metatarsal-a-rare-case-report-and-review-of-literature
#6
Kumar Prashant, Tulsi Das Bhattacharyya, Herman Frank, Prema Ram
INTRODUCTION: Giant cell tumor (GCT) or osteoclastoma is an osteolytic, mostly benign but locally aggressive tumor occurring in young adults at the epiphysis. Area of predilection is mainly long bones (85-90%). 4% of GCT are also found in iliac bone, spine and only 2% in hand (of which GCT phalanges are more common than metacarpal). GCT of metatarsal is a very rare occurrence with very few cases being reported so far. We report a case of GCT 1(st) metatarsal in a 40-year-old male which is a very rare entity...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28503982/anxiety-and-depression-affect-pain-drawings-in-cervical-degenerative-disc-disease
#7
Anna MacDowall, Yohan Robinson, Martin Skeppholm, Claes Olerud
INTRODUCTION: Pain drawings have been frequently used in the preoperative evaluation of spine patients. Until now most investigations have focused on low back pain patients, even though pain drawings are used in neck pain patients as well. The aims of this study were to investigate the pain drawing and its association to preoperative demographics, psychological impairment, and pain intensity. METHODS: We carried out a post hoc analysis of a randomized controlled trial, comparing cervical disc replacement to fusion for radiculopathy related to degenerative disc disease...
May 15, 2017: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/28493215/cervical-disc-replacement-surgery-indications-technique-and-technical-pearls
#8
REVIEW
Dante Leven, Joshua Meaike, Kris Radcliff, Sheeraz Qureshi
PURPOSE OF REVIEW: Cervical disc replacement (CDR) is a surgical option for appropriately indicated patients, and high success rates have been reported in the literature. Complications and failures are often associated with patient indications or technical variables, and the goal of this review is to assist surgeons in understanding these factors. RECENT FINDINGS: Several investigations have been published in the last 5 years supporting the use of CDR in specific patient populations...
May 10, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28486045/in-vitro-generated-intervertebral-discs-towards-engineering-tissue-integration
#9
Jonathan Iu, Eric Massicotte, Shu-Qiu Li, Mark B Hurtig, Ehsan Toyserkani, J Paul Santerre, Rita Kandel
The intervertebral disc (IVD) is composed of nucleus pulposus (NP) surrounded by multilamellated annulus fibrosus (AF), and is located between the vertebral bodies. Current treatments for chronic neck or low back pain do not completely restore the functionality of degenerated IVDs. Thus developing biological disc replacements is an approach of great interest. Given the complex structure of the IVD, tissue engineering of the individual IVD components and then combining them together may be the only way to achieve this...
May 9, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28467440/serum-biomarkers-in-patients-with-ossification-of-the-posterior-longitudinal-ligament-opll-inflammation-in-opll
#10
Yoshiharu Kawaguchi, Masato Nakano, Taketoshi Yasuda, Shoji Seki, Kayo Suzuki, Yasuhito Yahara, Hiroto Makino, Isao Kitajima, Tomoatsu Kimura
BACKGROUD: Ossification of the posterior longitudinal ligament (OPLL) is characterized by replacement of ligamentous tissue by ectopic new bone formation. OPLL causes narrowing of the spinal canal, resulting in neurological impairment. However, the pathogenesis of OPLL has not been fully elucidated. We investigated whether inflammation occurs in OPLL or not using high-sensitivity CRP (hs-CRP) in a case-control study. METHODS AND FINDINGS: This study included 103 patients with OPLL in the patient group and 95 age- and sex-matched volunteers with degenerative spinal disease in the control group...
2017: PloS One
https://www.readbyqxmd.com/read/28462043/lack-of-riluzole-efficacy-in-the-progression-of-the-neurodegenerative-phenotype-in-a-new-conditional-mouse-model-of-striatal-degeneration
#11
Grzegorz Kreiner, Katarzyna Rafa-Zabłocka, Piotr Chmielarz, Monika Bagińska, Irena Nalepa
BACKGROUND: Huntington's disease (HD) is a rare familial autosomal dominant neurodegenerative disorder characterized by progressive degeneration of medium spiny neurons (MSNs) located in the striatum. Currently available treatments of HD are only limited to alleviating symptoms; therefore, high expectations for an effective therapy are associated with potential replacement of lost neurons through stimulation of postnatal neurogenesis. One of the drugs of potential interest for the treatment of HD is riluzole, which may act as a positive modulator of adult neurogenesis, promoting replacement of damaged MSNs...
2017: PeerJ
https://www.readbyqxmd.com/read/28458901/the-management-of-metastatic-radioiodine-refractory-differentiated-thyroid-cancer-requires-an-integrated-approach-including-both-directed-and-systemic-therapies
#12
Shamil D Cooray, Duncan J Topliss
SUMMARY: A 58-year-old man with metastatic radioiodine-refractory differentiated thyroid cancer (DTC) presented with left thigh and right flank numbness. He had known progressive and widespread bony metastases, for which he received palliative radiotherapy, and multiple bilateral asymptomatic pulmonary metastases. CT scan and MRI of the spine revealed metastases at right T10-L1 vertebrae with extension into the central canal and epidural disease at T10 and T11 causing cord displacement and canal stenosis but retention of spinal cord signal...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28456673/retrieval-and-clinical-analysis-of-distraction-based-dual-growing-rod-constructs-for-early-onset-scoliosis
#13
Genevieve Hill, Srinidhi Nagaraja, Behrooz A Akbarnia, Jeff Pawelek, Paul Sponseller, Peter Sturm, John Emans, Pablo Bonangelino, Joshua Cockrum, William Kane, Maureen Dreher
BACKGROUND: Growing rod constructs are an important contribution for treating patients with Early Onset Scoliosis. These devices experience high failure rates, including rod fractures. PURPOSE: The objective of this study was to identify the failure mechanism of retrieved growing rods, and to identify differences between patients with failed and intact constructs. STUDY DESIGN/SETTING: Growing rod patients who had implant removal and were previously enrolled in a multicenter registry were eligible for this study...
April 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28429208/ultra-low-dose-periradicular-infiltration-of-the-lumbar-spine-spot-scanning-and-its-potential-for-further-dose-reduction-by-replacing-helical-planning-ct
#14
Fabian Henry Jürgen Elsholtz, Lars-Arne Schaafs, Christoph Erxleben, Bernd Hamm, Stefan Markus Niehues
PURPOSE: Computed tomography (CT)-guided periradicular infiltration has become an accepted procedure for treating radiculopathy-associated low back pain. The purpose of this study is to compare spot scanning and segmental helical planning CT in terms of dose reduction. MATERIALS AND METHODS: Eighty-five patients underwent CT-guided single-site lumbar periradicular therapy. Prior imaging was not available for planning. Sixty-three patients were examined with a new dedicated spot scanning technique (group I), and twenty-two patients underwent conventional segmental planning CT examinations with helical image acquisition serving as controls (group II)...
April 20, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28422837/multilevel-cervical-disc-replacement-versus-multilevel-anterior-discectomy-and-fusion-a-meta-analysis
#15
REVIEW
Ting-Kui Wu, Bei-Yu Wang, Yang Meng, Chen Ding, Yi Yang, Ji-Gang Lou, Hao Liu
BACKGROUND: Cervical disc replacement (CDR) has been developed as an alternative surgical procedure to anterior cervical discectomy and fusion (ACDF) for the treatment of single-level cervical degenerative disc disease. However, patients with multilevel cervical degenerative disc disease (MCDDD) are common in our clinic. Multilevel CDR is less established compared with multilevel ACDF. This study aims to compare the outcomes and evaluate safety and efficacy of CDR versus ACDF for the treatment of MCDDD...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28422796/waterless-hand-rub-versus-traditional-hand-scrub-methods-for-preventing-the-surgical-site-infection-in-orthopaedic-surgery
#16
Kentaro Iwakiri, Akio Kobayashi, Masahiko Seki, Yoshiyuki Ando, Tadao Tsujio, Masatoshi Hoshino, Hiroaki Nakamura
STUDY DESIGN: A retrospective cohort study with prospectively collected data OBJECTIVE.: The aim of this study was to compare SSI incidences, the cost of hand hygiene agents, and hand hygiene time between the traditional hand scrub and the waterless hand rub protocols before orthopaedic surgery. SUMMARY OF BACKGROUND DATA: Surgical-site-infections (SSI) prolong hospitalization and are a leading nosocomial cause of morbidity as well as a source of excess cost. Recently, a waterless hand rub protocol comprising alcohol based chlorhexidine gluconate for use before surgery was developed, but no studies have yet examined its utility in orthopaedic surgery...
April 18, 2017: Spine
https://www.readbyqxmd.com/read/28420102/efficient-actor-recovery-paradigm-for-wireless-sensor-and-actor-networks
#17
Reem K Mahjoub, Khaled Elleithy
The actor nodes are the spine of wireless sensor and actor networks (WSANs) that collaborate to perform a specific task in an unverified and uneven environment. Thus, there is a possibility of high failure rate in such unfriendly scenarios due to several factors such as power consumption of devices, electronic circuit failure, software errors in nodes or physical impairment of the actor nodes and inter-actor connectivity problem. Therefore, it is extremely important to discover the failure of a cut-vertex actor and network-disjoint in order to improve the Quality-of-Service (QoS)...
April 14, 2017: Sensors
https://www.readbyqxmd.com/read/28399557/radiological-results-and-clinical-patient-outcome-after-implantation-of-a-hydraulic-expandable-vertebral-body-replacement-following-traumatic-vertebral-fractures-in-the-thoracic-and-lumbar-spine-a-3-year-follow-up
#18
Michael Kreinest, Dorothee Schmahl, Paul A Grützner, Stefan Matschke
STUDY DESIGN: A prospective monocentric study. OBJECTIVE: The aim of the current study was the analysis of patient outcome and radiological results 3 years after implantation of a hydraulic expandable vertebral body replacement (VBR) system. SUMMARY OF BACKGROUND DATA: Around 70% to 90% of all traumatic spinal fractures are located in the thoracic and lumbar spine. Dorso-ventral stabilization is a frequently used procedure in traumatic vertebral body fracture treatment...
April 15, 2017: Spine
https://www.readbyqxmd.com/read/28387616/long-term-clinical-and-radiographic-outcomes-of-the-prestige-lp-artificial-cervical-disc-replacement-at-2-levels-results-from-a-prospective-randomized-controlled-clinical-trial
#19
Todd H Lanman, J Kenneth Burkus, Randall G Dryer, Matthew F Gornet, Jeffrey McConnell, Scott D Hodges
OBJECTIVE The aim of this study was to assess long-term clinical safety and effectiveness in patients undergoing anterior cervical surgery using the Prestige LP artificial disc replacement (ADR) prosthesis to treat degenerative cervical spine disease at 2 adjacent levels compared with anterior cervical discectomy and fusion (ACDF). METHODS A prospective, randomized, controlled, multicenter FDA-approved clinical trial was conducted at 30 US centers, comparing the low-profile titanium ceramic composite-based Prestige LP ADR (n = 209) at 2 levels with ACDF (n = 188)...
April 7, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28387560/clinical-evaluation-of-the-concussed-athlete-a-view-from-the-sideline
#20
Margot Putukian
CONTEXT: The sideline assessment of concussion is challenging, given its variable presentations, the limited sensitivity and specificity of sideline assessment tools, and how the presentation of the injury evolves over time. In addition, the diagnostic process, as well as the tools used to assess and manage concussion, continue to progress as research and what we know about concussion advance. This paper focuses on the initial assessment on the sideline by reviewing the concussion-evaluation literature, drawing from clinical experience to emphasize a standardized approach, and underscoring the importance of both familiarity with the athlete and clinical judgment...
March 2017: Journal of Athletic Training
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