keyword
MENU ▼
Read by QxMD icon Read
search

Reconstruction of the. Spine

keyword
https://www.readbyqxmd.com/read/29331289/titanium-scaffolding-an-innovative-modality-for-salvage-of-failed-first-ray-procedures
#1
Natalie Coriaty, Katherine Pettibone, Nicholas Todd, Shannon Rush, Ryan Carter, Colin Zdenek
Shortening of the first ray is a potential complication associated with first metatarsal procedures. Correction of this deformity conventionally has required the use of a tricortical bone graft to lengthen the bone. Graft complications, including donor site morbidity, poor graft stability, and graft resorption, have revealed a need for an alternative procedure. The present report shows that titanium cage scaffolding has lower extremity applications beyond its previous uses in the ankle and spine. Two patients underwent surgical correction for failed first ray procedures using a titanium cage apparatus with a calcaneal autograft and other biologic agents...
January 11, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29301014/pedicled-vascularized-bone-grafts-for-posterior-occipitocervical-and-cervicothoracic-fusion-a-cadaveric-feasibility-study
#2
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Jay D Turner, Steve W Chang, Mark C Preul, Edward M Reece, U Kumar Kakarla
BACKGROUND: Arthrodesis is critical for achieving favorable outcomes in reconstructive spine surgery. Vascularized bone grafts (VBGs) have been successfully used to augment fusion rates in a variety of skeletal pathologies, and pedicled VBG has numerous advantages over free transfer VBG. Pedicled VBG has not previously been described for the posterior occipitocervicothoracic spine. OBJECTIVE: To identify, describe, and assess potential donor sites for pedicled VBGs from occiput to T12 using a cadaver model and to describe important technical considerations for graft harvest and placement...
December 30, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29298959/lumbar-model-generator-a-tool-for-the-automated-generation-of-a-parametric-scalable-model-of-the-lumbar-spine
#3
C E Lavecchia, D M Espino, K M Moerman, K M Tse, D Robinson, P V S Lee, D E T Shepherd
Low back pain is a major cause of disability and requires the development of new devices to treat pathologies and improve prognosis following surgery. Understanding the effects of new devices on the biomechanics of the spine is crucial in the development of new effective and functional devices. The aim of this study was to develop a preliminary parametric, scalable and anatomically accurate finite-element model of the lumbar spine allowing for the evaluation of the performance of spinal devices. The principal anatomical surfaces of the lumbar spine were first identified, and then accurately fitted from a previous model supplied by S14 Implants (Bordeaux, France)...
January 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29290136/a-novel-noninstrumented-surgical-approach-for-foramen-reconstruction-for-isthmic-spondylolisthesis-in-patients-with-radiculopathy-preliminary-clinical-and-radiographic-outcomes
#4
Jochem K H Spoor, Alof H G Dallenga, Pravesh S Gadjradj, Luuk de Klerk, Frans C van Biezen, Henk W C Bijvoet, Biswadjiet S Harhangi
OBJECTIVE The health care costs for instrumented spine surgery have increased dramatically in the last few decades. The authors present a novel noninstrumented surgical approach for patients with isthmic spondylolisthesis, with clinical and radiographic results. METHODS Charts of patients who underwent this technique were reviewed. The procedure consisted of nerve root decompression by reconstruction of the intervertebral foramen. This was achieved by removal of the pedicle followed by noninstrumented posterolateral fusion in which autologous bone graft from the right iliac crest was used...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29281687/vascularization-and-odontode-structure-of-a-dorsal-ridge-spine-of-romundina-stellina-%C3%A3-rvig-1975
#5
Anna Jerve, Qingming Qu, Sophie Sanchez, Per Erik Ahlberg, Tatjana Haitina
There are two types of dermal skeletons in jawed vertebrates: placoderms and osteichthyans carry large bony plates (macromery), whereas chondrichthyans and acanthodians are covered by small scales (micromery). Fin spines are one of the last large dermal structures found on micromeric taxa and offer a potential source of histology and morphology that can be compared to those found on macromeric groups. Dermal fin spines offer a variety of morphology but aspects of their growth modes and homology are unclear...
2017: PloS One
https://www.readbyqxmd.com/read/29260308/a-technical-case-report-on-use-of-tubular-retractors-for-anterior-cervical-spine-surgery
#6
Arvind G Kulkarni, Ankit Patel, N V Ankith
PURPOSE: The authors put-forth this technical report to establish the feasibility of performing an anterior cervical corpectomy and fusion (ACCF) and a two-level anterior cervical discectomy and fusion (ACDF) using a minimally invasive approach with tubular retractors. METHODS: First case: cervical spondylotic myelopathy secondary to a large postero-inferiorly migrated disc treated with corpectomy and reconstruction with a mesh cage and locking plate. Second case: cervical disc herniation with radiculopathy treated with a two-level ACDF...
December 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29234889/translaminar-circuits-formed-by-the-pyramidal-cells-in-the-superficial-layers-of-cat-visual-cortex
#7
German Koestinger, Kevan A C Martin, Elisha S Rusch
Pyramidal cells in the superficial layers of the neocortex provide a major excitatory projection to layer 5, which contains the pyramidal cells that project to subcortical motor-related targets. Both structurally and functionally rather little is known about this interlaminar pathway, especially in higher mammals. Here, we made sparse ultrastructural reconstructions of the projection to layer 5 of three pyramidal neurons from layer 3 in cat V1 whose morphology, physiology, and synaptic connections with layers 2 and 3 were known...
December 12, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29234883/accuracy-of-thoracic-pedicle-screw-placement-in-adolescent-patients-with-severe-spinal-deformities-a-retrospective-study-comparing-drill-guide-template-with-free-hand-technique
#8
Yue Pan, G H Lü, Lei Kuang, Bing Wang
PURPOSE: Patients with severe spinal deformities often have small pedicle diameters, and pedicle dimensions vary between segments and individuals. Free-hand pedicle screw placement can be inaccurate. Individualized drill guide templates may be used, but the accuracy of pedicle screw placement in severe scoliosis remains unknown. The accuracy of drill guide templates and free-hand technique for the treatment of adolescent patients with severe idiopathic scoliosis are compared in this study...
December 12, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29227787/major-destructive-asymptomatic-lumbar-charcot-lesion-treated-with-three-column-resection-and-short-segment-reconstruction-case-report-treatment-strategy-and-review-of-literature
#9
Kestutis Valancius, Gaurav Garg, Madalina Duicu, Ebbe Stender Hansen, Cody Bunger
Charcot's spine is a long-term complication of spinal cord injury. The lesion is often localized at the caudal end of long fusion constructs and distal to the level of paraplegia. However, cases are rare and the literature relevant to the management of Charcot's arthropathy is limited. This paper reviews the clinical features, diagnosis, and surgical management of post-traumatic spinal neuroarthropathy in the current literature. We present a rare case of adjacent level Charcot's lesion of the lumbar spine in a paraplegic patient, primarily treated for traumatic spinal cord lesion 39 years before current surgery...
2017: SICOT-J
https://www.readbyqxmd.com/read/29223495/estimation-of-spinal-joint-centers-from-external-back-profile-and-anatomical-landmarks
#10
A Nerot, W Skalli, X Wang
Defining a subject-specific model of the human body is required for motion analysis in many fields, such as in ergonomics and clinical applications. However, locating internal joint centers from external characteristics of the body still remains a challenging issue, in particular for the spine. Current methods mostly require a set of rarely accessible (3D back or trunk surface) or operator dependent inputs (large number of palpated landmarks and landmarks-based anthropometrics). Therefore, there is a need to provide an alternative way to estimate joint centers only using a limited number of easily palpable landmarks and the external back profile...
November 20, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29218482/a-novel-muscle-sparing-high-thoracotomy-for-upper-thoracic-spine-resection-and-reconstruction
#11
Derek T Bernstein, Wu Zhuge, Shanda H Blackmon, Rex A W Marco
PURPOSE: High thoracotomy allows access to the anterior cervicothoracic and upper thoracic vertebrae; however, traditional techniques transect shoulder girdle muscles, leading to postoperative shoulder dysfunction. Muscle-sparing techniques diminish this concern, but often sacrifice the quality of exposure. We describe a novel muscle-sparing, high thoracotomy approach for the treatment of ventral cervicothoracic and upper thoracic spine lesions. METHODS: A novel muscle-sparing, high thoracotomy approach is described, utilizing a midline posterior incision with lateral extension from the lateral decubitus position...
December 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29207475/function-of-micrornas-in-the-osteogenic-differentiation-and-therapeutic-application-of-adipose-derived-stem-cells-ascs
#12
REVIEW
Walter M Hodges, Frederick O'Brien, Sadanand Fulzele, Mark W Hamrick
Traumatic wounds with segmental bone defects represent substantial reconstructive challenges. Autologous bone grafting is considered the gold standard for surgical treatment in many cases, but donor site morbidity and associated post-operative complications remain a concern. Advances in regenerative techniques utilizing mesenchymal stem cell populations from bone and adipose tissue have opened the door to improving bone repair in the limbs, spine, and craniofacial skeleton. The widespread availability, ease of extraction, and lack of immunogenicity have made adipose-derived stem cells (ASCs) particularly attractive as a stem cell source for regenerative strategies...
December 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29204734/basic-concepts-in-metal-work-failure-after-metastatic-spine-tumour-surgery
#13
REVIEW
Naresh Kumar, Ravish Patel, Anshuja Charvi Wadhwa, Aravind Kumar, Helena Maria Milavec, Dhiraj Sonawane, Gurpal Singh, Lorin Michael Benneker
PURPOSE: The development of spinal implants marks a watershed in the evolution of metastatic spine tumour surgery (MSTS), which has evolved from standalone decompressive laminectomy to instrumented stabilization and decompression with reconstruction when necessary. Fusion may not be feasible after MSTS due to poor quality of graft host bed along with adjunct chemotherapy and/or radiotherapy postoperatively. With an increase in the survival of patients with spinal tumours, there is a probability of an increase in the rate of implant failure...
December 4, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29198945/quantitative-measurements-versus-receiver-operating-characteristics-and-visual-grading-regression-in-ct-images-reconstructed-with-iterative-reconstruction-a-phantom-study
#14
Kristin Jensen, Hilde Kjernlie Andersen, Örjan Smedby, Bjørn Helge Østerås, Anette Aarsnes, Anders Tingberg, Erik Fosse, Anne Catrine Martinsen
RATIONALE AND OBJECTIVES: This study aimed to evaluate the correlation of quantitative measurements with visual grading regression (VGR) and receiver operating characteristics (ROC) analysis in computed tomography (CT) images reconstructed with iterative reconstruction. MATERIALS AND METHODS: CT scans on a liver phantom were performed on CT scanners from GE, Philips, and Toshiba at three dose levels. Images were reconstructed with filtered back projection (FBP) and hybrid iterative techniques (ASiR, iDose, and AIDR 3D of different strengths)...
November 29, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29189528/incidence-and-diagnostic-evaluation-of-postoperative-fever-in-pediatric-patients-with-neuromuscular-disorders
#15
Mohamed A A Yousef, Darius Dranginis, Scott Rosenfeld
BACKGROUND: Children with neuromuscular disorders have a significant chance of developing scoliosis and/or hip dislocation during childhood and adolescence and often undergo surgical reconstruction. Because of their high rate of medical comorbidities, these patients are at higher risk of postoperative complications and are therefore often comanaged, along with orthopaedics, by pediatric medicine and critical care teams. Fever during the postoperative stay is a frequent occurrence and often prompts extensive diagnostic workup which increases the cost and burden on the health system but have unclear effects on the care of the patient...
November 16, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29189523/bilateral-sacral-ala-fractures-are-strongly-associated-with-lumbopelvic-instability
#16
Julius A Bishop, Sean Dangelmajer, Ian Corcoran-Schwartz, Michael J Gardner, Milton L Chip Routt, Tiffany N Castillo
OBJECTIVES: To quantify the incidence of lumbopelvic instability in the setting of unilateral and bilateral sacral fractures and assess whether the presence of bilateral sacral fractures on axial imaging is a useful screening test for lumbopelvic instability. DESIGN: Retrospective case series. SETTING: Level I trauma center at an academic medical center. PATIENTS/PARTICIPANTS: A hospital database was used to identify patients diagnosed with a sacral fracture by The International Classification of Diseases, Ninth Revision (ICD-9) code from 2000 to 2014...
December 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29184661/application-of-an-rgbd-augmented-c-arm-for-minimally-invasive-scoliosis-surgery-assistance
#17
Séverine Habert, Ulrich Eck, Pascal Fallavollita, Stefan Parent, Nassir Navab, Farida Cheriet
Minimally invasive surgeries (MISs) are gaining popularity as alternatives to conventional open surgeries. In thoracoscopic scoliosis MIS, fluoroscopy is used to guide pedicle screw placement and to visualise the effect of the intervention on the spine curvature. However, cosmetic external appearance is the most important concern for patients, while correction of the spine and achieving coronal and sagittal trunk balance are the top priorities for surgeons. The authors present the feasibility study of the first intra-operative assistive system for scoliosis surgery composed of a single RGBD camera affixed on a C-arm which allows visualising in real time the surgery effects on the patient trunk surface in the transverse plane...
October 2017: Healthcare Technology Letters
https://www.readbyqxmd.com/read/29184051/clinical-efficacy-of-anterior-partial-corpectomy-and-titanium-mesh-fusion-and-internal-fixation-for-treatment-of-old-fracture-dislocation-of-the-lower-cervical-spine
#18
De-Chao Miao, Bao-Yang Zhang, Tao Lei, Yong Shen
BACKGROUND The aim of this study was to analyze the clinical features and to evaluate the efficacy of anterior partial corpectomy and titanium mesh fusion and internal fixation of old fracture dislocation of the lower cervical spine. MATERIAL AND METHODS We retrospectively analyzed the clinical data of 52 patients with old lower cervical fracture and dislocation treated with anterior partial corpectomy and titanium mesh fusion fixation between January 2008 and December 2013, with a mean follow-up period of 4...
November 29, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29163054/motor-deficits-and-cerebellar-atrophy-in-elovl5-knock-out-mice
#19
Eriola Hoxha, Rebecca M C Gabriele, Ilaria Balbo, Francesco Ravera, Linda Masante, Vanessa Zambelli, Cristian Albergo, Nico Mitro, Donatella Caruso, Eleonora Di Gregorio, Alfredo Brusco, Barbara Borroni, Filippo Tempia
Spino-Cerebellar-Ataxia type 38 (SCA38) is caused by missense mutations in the very long chain fatty acid elongase 5 gene, ELOVL5. The main clinical findings in this disease are ataxia, hyposmia and cerebellar atrophy. Mice in which Elovl5 has been knocked out represent a model of the loss of function hypothesis of SCA38. In agreement with this hypothesis, Elovl5 knock out mice reproduced the main symptoms of patients, motor deficits at the beam balance test and hyposmia. The cerebellar cortex of Elovl5 knock out mice showed a reduction of thickness of the molecular layer, already detectable at 6 months of age, confirmed at 12 and 18 months...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29156321/postural-changes-in-orthodontic-patients-treated-with-clear-aligners-a-rasterstereographic-study
#20
Simone Parrini, Benedetta Comba, Gabriele Rossini, Serena Ravera, Giovanni Cugliari, Ilaria De Giorgi, Andrea Deregibus, Tommaso Castroflorio
BACKGROUND: Correlation between malocclusions and body posture has been discussed in the last decades, but there is still a lack of consensus in existing literature. Rasterstereography allows tridimensional reconstruction of the spine, starting from the back surface analysis. So far studies which tested modifications of rasterstereographic parameters during orthodontic treatment, comparing with those obtained from untreated control group, are not available. Clear aligner treatment produces alteration of vertical height due to the occlusal coverage and, subsequently, a stimulation of periodontal receptors which causes an inhibition of the jaw closing muscles and, hypothetically, changes in mandibular posture...
November 14, 2017: Journal of Electromyography and Kinesiology
keyword
keyword
114975
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"