Read by QxMD icon Read

Spine implants

Peter C Gerszten, Erin Paschel, Hazem Mashaly, Hatem Sabry, Hasan Jalalod'din, Khaled Saoud
BACKGROUND: Anterior cervical discectomy and fusion (ACDF) is a well-accepted treatment option for patients with cervical spine disease. Three- and four-level discectomies are known to be associated with a higher complication rate and lower fusion rate than single-level surgery. This study was performed to evaluate and compare zero-profile fixation and stand-alone PEEK cages for three- and four-level ACDF. METHODS: Two cohorts of patients who underwent ACDF for the treatment of three- and four-level disease were compared...
September 10, 2016: Curēus
Jeffrey D Coe, James F Zucherman, Donald W Kucharzyk, Kornelis A Poelstra, Larry E Miller, Sandeep Kunwar
The increasing adoption of minimally invasive techniques for spine surgery in recent years has led to significant advancements in instrumentation for lumbar interbody fusion. Percutaneous pedicle screw fixation is now a mature technology, but the role of expandable cages is still evolving. The capability to deliver a multiexpandable interbody cage with a large footprint through a narrow surgical cannula represents a significant advancement in spinal surgery technology. The purpose of this report is to describe a multiexpandable lumbar interbody fusion cage, including implant characteristics, intended use, surgical technique, preclinical testing, and early clinical experience...
2016: Medical Devices: Evidence and Research
Kae Sian Tay, Anupreet Bassi, William Yeo, Wai Mun Yue
BACKGROUND CONTEXT: There is no current literature comparing outcomes of patients with and without lumbar scoliosis having neurological symptoms undergoing Minimally Invasive Transforaminal Lumbar Interbody Fusion (MIS TLIF) technique. PURPOSE: To determine whether associated lumbar scoliosis will result in different clinical, radiological and operative outcomes in patients undergoing focal MISTLIF for neurogenic symptoms, without specific correction of the scoliosis...
October 7, 2016: Spine Journal: Official Journal of the North American Spine Society
Mehmet Nuri Erdem, Sinan Karaca, Seckin Sarı, Feridun Yumrukcal, Ruhat Tanli, Mehmet Aydogan
BACKGROUND CONTEXT: Application of pedicle screws with cement in order to strengthen the fixation of the osteoporotic spine has increasingly gained popularity. However, the technique has also led to an increase in cement-related complications. PURPOSE: The aim of this study was to compare the clinical and radiological results of the patients with degenerative spinal pathologies who were treated with pedicle screws and cement injections on all segments versus those who were treated with cement injections only on the strategic vertebrae selected...
October 5, 2016: Spine Journal: Official Journal of the North American Spine Society
Sanjay Dandamudi, Jeremy D Collins, James C Carr, Pat Mongkolwat, Amir A Rahsepar, Todd T Tomson, Nishant Verma, Rishi Arora, Alex B Chicos, Susan S Kim, Albert C Lin, Rod S Passman, Bradley P Knight
RATIONALE AND OBJECTIVES: Studies reporting the safety of magnetic resonance imaging (MRI) in patients with a cardiac implantable electronic device (CIED) have mostly excluded examinations with the device in the magnet isocenter. The purpose of this study was to describe the safety of cardiac and thoracic spine MRI in patients with a CIED. MATERIALS AND METHODS: The medical records of patients with a CIED who underwent a cardiac or thoracic spine MRI between January 2011 and December 2014 were reviewed...
October 4, 2016: Academic Radiology
Kenneth Chin, Joshua M Abzug, Donald S Bae, Bernard D Horn, Martin Herman, Craig P Eberson
Management of pediatric polytrauma patients is one of the most difficult challenges for orthopaedic surgeons. Multisystem injuries frequently include complex orthopaedic surgical problems that require intervention. The physiology and anatomy of children and adolescent trauma patients differ from the physiology and anatomy of an adult trauma patient, which alters the types of injuries sustained and the ideal methods for management. Errors of pediatric polytrauma care are included in two broad categories: missed injuries and inadequate fracture treatment...
February 15, 2016: Instructional Course Lectures
Sriram Balasubramanian, James R Peters, Lucy F Robinson, Anita Singh, Richard W Kent
PURPOSE: Based on the structural anatomy, loading condition and range of motion (ROM), no quadruped animal has been shown to accurately mimic the structure and biomechanical function of the human spine. The objective of this study is to quantify the thoracic vertebrae geometry of the kangaroo, and compare with adult human, pig, sheep, and deer. METHODS: The thoracic vertebrae (T1-T12) from whole body CT scans of ten juvenile kangaroos (ages 11-14 months) were digitally reconstructed and geometric dimensions of the vertebral bodies, endplates, pedicles, spinal canal, processes, facets and intervertebral discs were recorded...
October 4, 2016: European Spine Journal
Donita I Bylski-Austrow, David L Glos, Anne C Bonifas, Max F Carvalho, Matthew C Coombs, Peter F Sturm
BACKGROUND: Surgical treatments for early onset scoliosis (EOS) correct curvatures and improve respiratory function but involve many complications. A distractible, or 'growing rod,' implant construct that is more flexible than current metal rod systems may sufficiently correct curves in small children and reduce complications due to biomechanical factors. The purpose of this pilot study was to determine ranges of motion (ROM) after implantation of simulated growing rod constructs with a range of clinically relevant structural properties...
2016: Scoliosis and Spinal Disorders
Gauri Tendulkar, Phillip Grau, Patrick Ziegler, Alfred Buck, Alfred Buck, Andreas Badke, Hans-Peter Kaps, Sabrina Ehnert, Andreas K Nussler
Intervertebral disc degeneration and disc herniation is one of the major causes of lower back pain. Depletion of extracellular matrix, culminating in nucleus pulposus (NP) extrusion leads to intervertebral disc destruction. Currently available surgical treatments reduce the pain but do not restore the mechanical functionality of the spine. In order to preserve mechanical features of the spine, total disc or nucleus replacement thus became a wide interest. However, this arthroplasty era is still in an immature state, since none of the existing products have been clinically evaluated...
2016: Journal of Visualized Experiments: JoVE
Md Shah Alam, Kevin Phan, Rezaul Karim, Sharif Ahmed Jonayed, Hasan Khalid Md Munir, Shubhendu Chakraborty, Tashfique Alam
BACKGROUND: Tuberculosis (TB) of the spine is a common site of osseous TB, accounting for 50%-60% of cases. Spinal TB still occurs in both developed and developing countries. The diagnosis of spinal TB is difficult and it commonly presents at an advanced stage. Delays in establishing diagnosis and management result in complications such as spinal cord compression and spinal deformity. METHODS: A total of 582 patients with TB of the cervical, thoracic and lumbar spine with moderate to severe cord compression were studied...
December 2015: J Spine Surg
Teng Maëlys, Gilberte Robain, Samy Bendaya
OBJECTIVE: Sacral neuromodulation is usually used to treat non-obstructive urinary retention when other forms of treatment have failed. An improvement greater than 50% in urinary symptoms after 40months of follow-up has been shown: - moreover, it also has few complications: infections, technical failures, discomfort; - we report a case of dystonia of the lower limb, appeared after sacral neuromodulation implantation. OBSERVATIONS: MMP is a 16-year-old boy with early puberty as noteworthy medical history...
September 2016: Annals of Physical and Rehabilitation Medicine
Bartosz Polis, Jacek Krawczyk, Lech Polis, Emilia Nowosławska
PURPOSE: The aim of the article is to present the new extrapedicular percutaneous technique for posttraumatic vertebral column fracture. METHODS: A 15-year-old boy needed a surgical Th8 posttraumatic vertebral body (VB) compressive fracture reduction due to insufficient conservative treatment and consistent severe clinical symptoms. After 6 months of external Jevett long-roll brace stabilization, progressive sagittal balance disturbance of thoracic kyphosis was measured and persistent clinical symptoms were observed...
September 26, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Sean C Martin, Bassam O Dabbous, Elliott E Ridgeon, Shailendra A Magdum, Thomas A D Cadoux-Hudson, Erlick A C Pereira
OBJECTIVES: Anterior cervical discectomy and fusion (ACDF) is a common operative treatment of compressive pathology of the cervical spinal cord, when caused by one or more degenerated intervertebral discs or related osteophytes. In addition to intra-operative radiographs to confirm spinal level before discectomy and implant position after insertion, traditional practice is to obtain post-operative antero-posterior and lateral plain radiographs (XR) before hospital discharge, despite a paucity of evidence supporting their benefit to patient care...
September 22, 2016: British Journal of Neurosurgery
Elena Provaggi, Julian J H Leong, Deepak M Kalaskar
The latest and fastest-growing innovation in the medical field has been the advent of three-dimensional printing technologies, which have recently seen applications in the production of low-cost, patient-specific medical implants. While a wide range of three-dimensional printing systems has been explored in manufacturing anatomical models and devices for the medical setting, their applications are cutting-edge in the field of spinal surgery. This review aims to provide a comprehensive overview and classification of the current applications of three-dimensional printing technologies in spine care...
September 22, 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
M Lefranc, J Peltier
The ROSA® robot (Medtech, Montpellier, France) is a new medical device designed to assist the surgeon during minimally invasive spine procedures. The device comprises a patient-side cart (bearing the robotic arm and a workstation) and an optical navigation camera. The ROSA® Spine robot enables accurate pedicle screw placement. Thanks to its robotic arm and navigation abilities, the robot monitors movements of the spine throughout the entire surgical procedure and thus enables accurate, safe arthrodesis for the treatment of degenerative lumbar disc diseases, exactly as planned by the surgeon...
October 2016: Expert Review of Medical Devices
Yuanyuan Chen, Yang Liu, Huajiang Chen, Peng Cao, Wen Yuan
STUDY DESIGN: A retrospective study. OBJECTIVE: To compare clinical and radiologic outcomes of 3-level anterior cervical discectomy and fusion between a zero-profile (Zero-P) spacer and a traditional plate in cases of symptomatic cervical spine spondylosis. SUMMARY OF BACKGROUND DATA: Anterior cervical decompression and fusion is indicated for patients with anterior compression or stenosis of the spinal cord. The Zero-P spacers have been used for anterior cervical interbody fusion of 1 or 2 segments...
September 16, 2016: Clinical Spine Surgery
Kingsley R Chin, Fabio J R Pencle, André V Coombs, Mohamed Elsharkawy, Corrine F Packer, Elijah A Hothem, Jason A Seale
STUDY DESIGN: Level III. OBJECTIVE: To report on the outcomes of midline cortical bone trajectory (CBT) pedicle screw surgical technique for posterior lumbar fixation in the outpatient surgery center (OSC) compared with traditional pedicle screws in the hospital. SUMMARY OF BACKGROUND DATA: Traditional pedicle screws have been the gold standard for posterior lumbar fusion. Advances in spine surgery, including less invasive procedures have propelled the design of instruments and implants to achieve greater posterior spinal fixation, with decreased tissue destruction and higher safety margins...
September 16, 2016: Clinical Spine Surgery
Robert F Murphy, James F Mooney
Complications following spine fusion for adolescent idiopathic scoliosis can be characterized as either intra-operative or post-operative. The most serious and feared complication is neurologic injury, both in the intra- and post-operative period. Other intra-operative complications include dural tears and ophthalmologic or peripheral nerve deficits, which may be related to positioning. Among the most common post-operative complications are surgical site infection, venous thromboembolism, gastrointestinal complications, and implant-related complications...
September 17, 2016: Current Reviews in Musculoskeletal Medicine
Franck Le Navéaux, A Noelle Larson, Hubert Labelle, Xiaoyu Wang, Carl-Éric Aubin
BACKGROUND: Optimal implant densities and configurations for thoracic spine instrumentation to treat adolescent idiopathic scoliosis remain unknown. The objective was to computationally assess the biomechanical effects of implant distribution on 3D curve correction and bone-implant forces. METHODS: 3D patient-specific biomechanical spine models based on a multibody dynamic approach were created for 9 Lenke 1 patients who underwent posterior instrumentation (main thoracic Cobb: 43°-70°)...
September 9, 2016: Clinical Biomechanics
Luigi La Barbera, Fabio Galbusera, Hans-Joachim Wilke, Tomaso Villa
PURPOSE: To discuss whether the standard test method for preclinical evaluation of posterior spine stabilization devices with an anterior support correctly describes the effect of two short-segment posterior stabilization techniques frequently used in clinical practice for the treatment of traumatic, degenerative and iatrogenic instabilities. METHODS: A finite element study compared a validated instrumented L2-L4 segment undergoing standing, upper body flexion and extension to ISO 12189 standards model under a compressive load...
September 16, 2016: European Spine Journal
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"