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Pediatric pedicles

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https://www.readbyqxmd.com/read/29148922/feasibility-and-safety-of-using-thoracic-and-lumbar-cortical-bone-trajectory-pedicle-screws-in-spinal-constructs-in-children-technical-note
#1
Jonathan N Sellin, Jeffrey S Raskin, Kristen A Staggers, Alison Brayton, Valentina Briceño, Amee J Moreno, Andrew Jea
Thoracic and lumbar cortical bone trajectory pedicle screws have been described in adult spine surgery. They have likewise been described in pediatric CT-based morphometric studies; however, clinical experience in the pediatric age group is limited. The authors here describe the use of cortical bone trajectory pedicle screws in posterior instrumented spinal fusions from the upper thoracic to the lumbar spine in 12 children. This dedicated study represents the initial use of cortical screws in pediatric spine surgery...
November 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29057347/indirect-pars-repair-for-pediatric-isthmic-spondylolysis-a-case-series
#2
Brandon L Raudenbush, Reid C Chambers, Michael P Silverstein, Ryan C Goodwin
BACKGROUND: Isthmic spondylolysis (ISY) is a common cause of back pain in the pediatric population. Historically, non-operative treatments have had a very high success rate. The purpose of this study was to review the mid-term results of an indirect pars repair technique on reducing the visual analog score for pain (VAS), spondylolysis defect healing, complication rates and rates of return to pre-surgery activity level in pediatric patients who failed conservative care for ISY. METHODS: A retrospective review of all pediatric patients (<18 years old) treated surgically by one surgeon over a 5-year period was performed...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29050714/when-does-intraoperative-blood-loss-occur-during-pediatric-scoliosis-correction
#3
Sean Wahlquist, Montri Wongworawat, Scott Nelson
BACKGROUND: The purpose of our study was to assess the relationship between amount of blood loss and surgical stage in pediatric patients undergoing posterior spinal fusion for deformity correction to determine: (1) when the highest rate of blood loss occurred; (2) what percentage of total blood loss occurred during deformity correction and closure; and (3) how to predict remaining blood loss during a procedure. Blood loss following exposure and placement of the final pedicle screw is often underestimated, which may result in lack of sufficient blood product availability...
November 2017: Spine Deformity
https://www.readbyqxmd.com/read/28974870/preperitoneal-bladder-augmentation-feasibility-and-results
#4
Dhruva Nath Ghosh, Sampath Karl, Sudipta Sen
INTRODUCTION: Bladder augmentation is an important part of pediatric reconstructive urology. This study was conducted to assess the feasibility and results of our technique of preperitoneal bladder augmentation. MATERIALS AND METHODS: Thirty-three children underwent preperitoneal bladder augmentation for small inelastic bladders who had failed medical management or needed undiversion. The underlying diagnosis included neurogenic bladder, valve bladder, bladder exstrophy, non-neurogenic neurogenic, ectopic ureters, and urogenital sinus...
October 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28927914/c1-c2-pedicle-screw-fixation-for-atlantoaxial-dislocation-in-pediatric-patients-younger-than-5-years-a-case-series-of-15-patients
#5
Yue-Hui Zhang, Jiang Shao, Dean Chou, Jian-Feng Wu, Jia Song, Jing Zhang
OBJIECTIVE: C1-C2 pedicle screw fixation has become popular for providing excellent bony purchase and avoiding neurovascular complications. However, it may be technically challenging in children. The objective of this study is to investigate the safety and efficacy of C1-C2 pedicle screw fixation for atlantoaxial dislocation (AAD) in pediatric patients younger than 5 years, and to evaluate the preliminary clinical and radiographic results. METHODS: During a 7-year period, 15 patients with a mean age of 3...
September 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28906587/vascularized-thumb-metacarpal-periosteal-pedicled-flap-for-scaphoid-nonunion-an-anatomical-study-and-pediatric-case-report
#6
Sergi Barrera-Ochoa, Gerardo Mendez-Sanchez, Alfonso Rodriguez-Baeza, Jorge Knörr, Jayme Augusto Bertelli, Francisco Soldado
PURPOSE: Through an anatomical review, the primary aim of this study was to delineate the dorsal thumb metacarpal (TM) periosteal branches of the radial artery (RA). In addition, we report here the clinical utility of a vascularized TM periosteal pedicled flap (VTMPF), supplied by the first dorsal metacarpal artery (FDMA), in a complex case of scaphoid nonunion. METHODS: Ten latex-colored upper limbs from fresh human cadavers were used. Branches of the RA were dissected under 3x loupe magnification, noting the periosteal branches arising from the FDMA...
September 14, 2017: Microsurgery
https://www.readbyqxmd.com/read/28884300/what-every-radiologist-should-know-about-adnexal-torsion
#7
Guillaume Ssi-Yan-Kai, Anne-Laure Rivain, Caroline Trichot, Marie-Chantal Morcelet, Sophie Prevot, Xavier Deffieux, Jocelyne De Laveaucoupet
Adnexal torsion is the fifth most common gynecologic surgical emergency, requiring clinician and radiologist awareness. It involves the rotation of the ovarian tissue on its vascular pedicle leading to stromal edema, hemorrhagic infarction, and necrosis of the adnexal structures with the subsequent sequelae. Expedient diagnosis poses a difficult challenge because the clinical presentation is variable and often misleading. Adnexal torsion can mimic malignancy as it can take a subacute, intermittent, or chronic course, and thereby can be complicated to diagnose...
September 7, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28790477/pediatric-lumbar-pedicle-screw-placement-using-navigation-templates-a-cadaveric-study
#8
Xing Wang, Jun Shi, Shojie Zhang, Zhifeng Zhang, Xiaohe Li, Zhijun Li
BACKGROUND: Pedicle screw technique is commonly used treatment of adult spinal trauma, tumor, degeneration. The application of pedicle screws is very challenging in children because children have a fast growing spine and spinal pedicle morphology of children and adult has large difference. 3 D reconstruction individual navigation templates improve the success rate of pediatric pedicle screw system. This study is aimed to provide a precise method for lumbar spine pedicle screw placement in children using computer-aided design and rapid prototyping technology...
July 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28713667/absent-congenital-cervical-pedicle-nearly-misdiagnosed-as-a-facet-dislocation-a-case-report
#9
Scott Safir, Jonathan Rasouli, Jeremy Steinberger, Branko Skovrlj, Amish Doshi, Konstantinos Margetis, Saadi Ghatan
BACKGROUND: Cervical spinal injury encompasses up to 1.5% of all pediatric injuries. Children, and more specifically infants, are a difficult subset of patients to obtain neurological exam in the setting of trauma, thus necessitating the use of cervical X-rays, CT scans, and MRI imaging. CASE DESCRIPTION: A healthy, 15-month-old boy had an unwitnessed fall down a flight of stairs and received a CT scan of the head and cervical spine in the emergency department due to cephalohematoma and mechanism of injury...
September 2017: Interdisciplinary Neurosurgery: Advanced Techniques and Case Management
https://www.readbyqxmd.com/read/28711167/perioperative-management-of-hypertensive-neuroblastoma-a-study-from-the-italian-group-of-pediatric-surgical-oncologists-gicop
#10
Luca Pio, Stefano Avanzini, Girolamo Mattioli, Giuseppe Martucciello, Angela Rita Sementa, Massimo Conte, Annarita Gigliotti, Claudio Granata, Ernesto Leva, Anna Maria Fagnani, Umberto Caccioppoli, Nino Tedesco, Jurgen Schleef, Elisa Tirtei, Fortunato Siracusa, Paolo D'Angelo, Pierluigi Lelli Chiesa, Lucia Miglionico, Bruno Noccioli, Elisa Severi, Claudio Carlini, Francesco Vaccarella, Francesco Camoglio, Simone Cesaro, Alessandra Narciso, Giovanna Riccipetitoni, Giovanni Cecchetto, Alessandro Inserra
BACKGROUND: Hypertension (HT) is rarely reported in patients affected by Neuroblastoma (NB), and management guidelines are lacking. Clinical features and perioperative medical treatment in such patients were reviewed to 1) ascertain whether a shared treatment strategy exists among centers and 2) if possible, propose some recommendations for the perioperative management of HT in NB patients. METHODS: A retrospective multicenter survey was conducted on patients affected by NB who presented HT symptoms...
July 3, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28602642/precision-and-accuracy-of-consumer-grade-motion-tracking-system-for-pedicle-screw-placement-in-pediatric-spinal-fusion-surgery
#11
Andrew Chan, Janelle Aguillon, Doug Hill, Edmond Lou
Adolescent idiopathic scoliosis (AIS) is a 3-dimensional spinal deformity involving lateral curvature and axial rotation. Surgical intervention involves insertion of pedicle screws into the spine, requiring accuracies of 1mm and 5° in translation and rotation to prevent neural and vascular complications. While commercial CT-navigation is available, the significant cost, bulk and radiation dose hinders their use in AIS surgery. The objective of this study was to evaluate a commercial-grade Optitrack Prime 13W motion capture cameras to determine if they can achieve adequate accuracy for screw insertion guidance in AIS...
June 9, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28520681/delayed-dural-leak-following-posterior-spinal-fusion-for-idiopathic-scoliosis-using-all-posterior-pedicle-screw-technique
#12
Lorena V Floccari, A Noelle Larson, Anthony A Stans, Jeremy Fogelson, Iikka Helenius
BACKGROUND: In pediatric patients, pedicle screws are malpositioned 5% to 15% of the time. Complications associated with malpositioned screws are infrequently reported in the literature. We present a series of adolescent idiopathic scoliosis (AIS) patients who presented in a delayed manner with positional headache and chronic dural leak adjacent to the pedicle screw tract. METHODS: Scoliosis databases at 2 centers were reviewed, and cases of delayed positional headaches following posterior spinal fusion for AIS were identified...
October 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28473948/purely-ligamentous-flexion-distraction-injury-in-a-five-year-old-child-treated-with-surgical-management
#13
Ryan M Schiedo, William Lavelle, Nathaniel R Ordway, Tarush Rustagi, Mike H Sun
Chance fractures by definition are a type of flexion-distraction injury with concomitant vertebral body fracture. Although uncommon in the pediatric population, they are associated with motor vehicle accidents and typically involve the thoraco-lumbar spine. Injury occurs when the spine rotates about a fixed axis, such as a lap belt. Our case reports the management of a five-year-old girl involved in a head-on collision who suffered a purely ligamentous flexion-distraction injury (Chance-type injury, without bone involvement) at the L2-L3 vertebral level...
April 3, 2017: Curēus
https://www.readbyqxmd.com/read/28365106/nephron-sparing-surgery-in-the-treatment-of-pediatric-renal-cell-carcinoma-associated-with-xp11-2-translocation-tfe3-gene-fusions
#14
Chao Liu, Weiping Zhang, Hongcheng Song
PURPOSE: To investigate the safety and efficacy of nephron-sparing surgery (NSS) in the treatment of pediatric Xp11.2 translocation renal cell carcinoma (RCC). METHODS: Clinical characteristics of 9 RCC children (7 males and 2 females) with Xp11.2 translocation who received NSS between January 1973 and December 2015 were retrospectively analyzed. The mean age was 7.8years (range: 4.5-13.5years). Xp11.2 translocation RCC was found in the left side in 4 patients and right in 5...
March 27, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28363299/reconstruction-of-the-adult-and-pediatric-burned-hand
#15
REVIEW
Ryan P Cauley, Lydia A Helliwell, Matthias B Donelan, Kyle R Eberlin
Thermal injuries of the hand can have a great impact on function. Initial treatment should focus on the prevention of contracture through the use of tissue-sparing techniques and optimized occupational therapy. Surgical intervention should follow the standard reconstructive ladder and can involve several techniques from simple to complex including minimally invasive techniques, such as laser and steroid injection, contracture release and skin grafting, and local tissue rearrangement and regional flaps as well as distant pedicled and free flaps...
May 2017: Hand Clinics
https://www.readbyqxmd.com/read/28340665/pediatric-microsurgery-a-global-overview
#16
REVIEW
Ali Izadpanah, Steven L Moran
As microsurgical expertise has improved, allowing for the safe transfer of smaller and more refined flaps, free tissue transfer has continued to gain popularity for the management of pediatric soft tissue and bony defects. For the past 2 decades pediatric microsurgery has been shown to be technically feasible and reliable. The major advantage of free tissue transfer in children is the ability to reconstruct defects in a single stage, avoiding the historic treatments of skin grafting, tissue expansion, and pedicled flaps...
April 2017: Clinics in Plastic Surgery
https://www.readbyqxmd.com/read/28331905/asymmetrical-pedicle-subtraction-osteotomy-for-progressive-kyphoscoliosis-caused-by-a-pediatric-chance-fracture-a-case-report
#17
Satoshi Suzuki, Nobuyuki Fujita, Tomohiro Hikata, Akio Iwanami, Ken Ishii, Masaya Nakamura, Morio Matsumoto, Kota Watanabe
BACKGROUND: Although most pediatric Chance fractures (PCFs) can be treated successfully with casting and bracing, some PCFs cause progressive spinal deformities requiring surgical treatment. There are only few reports of asymmetrical osteotomy for PCF-associated spinal deformities. CASE PRESENTATION: We here report a case of a 10-year-old girl who suffered an L2 Chance fracture from an asymmetrical flexion-distraction force, accompanied by abdominal injuries. She was treated conservatively with a soft brace...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28157642/cervicovaginal-agenesis-treated-with-modified-yang-monti-technique-in-two-steps-case-report-and-literature-review
#18
J Acosta-León, A Pantoja-Rojas, J R Corona-Rivera, E López-Marure, C F Ploneda-Valencia
INTRODUCTION: Müllerian duct anomalies are rare with less than 200 cases published in the literature. Recently, the implementation of the Yang-Monti principle for the creation of the neovagina has been used in 10 previous published cases. Here, we report the first case of cervicovaginal agenesis treated with the modified Yang-Monti technique in two steps in México. PRESENTATION OF CASE: A 14-year-old female presented to the pediatric consult with a history of primary amenorrhea and a chronic-cyclic pelvic pain...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28151859/cortical-bone-trajectory-screws-placement-via-pedicle-or-pedicle-rib-unit-in-the-pediatric-thoracic-spine-t9-t12-a-2-dimensional-multiplanar-reconstruction-study-using-computed-tomography
#19
Jun Xuan, Jian Chen, Hui He, Hai-Ming Jin, Di Zhang, Yao-Sen Wu, Nai-Feng Tian, Xiang-Yang Wang
Thoracic cortical bone trajectory (CBT) screw fixation can maximize the thread contact with cortical bone, and it is 53.8% higher than that of the traditional pedicle screws. Moreover, it can also enable less tissue dissection and retraction for reduced muscle disruption.Eighty pediatric patients are divided into 4 age groups and their thoracic vertebrae are analyzed on computed tomography (CT) images. The maximal screw length, maximal screw diameter, screw diameter, and the cephalad angle are measured. The statistical analysis is performed using the Student's t-test and Pearson's correlation analysis...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28150269/applications-of-digital-technology-for-the-morphological-study-of-c3-c7-vertebral-arch-pedicle-in-children
#20
S Zhang, X Wang, X Ren, Z Li, Y Zhang
BACKGROUND: This study aims to investigate the morphological characteristics and developmental patterns of the vertebral arch pedicle (VAP) in the lower cervical vertebrae of children, and to subsequently help guide the implantation of the pedicle screw. METHODS: The cervical vertebral multi-slice computed tomography (MSCT) data of 60 pediatric patients aged 4 to 12 years were collected and grouped. A reconstructed 3D model measured the following: pedicle width (PW), pedicle height (PH), pedicle osseous channel (POCL), pedicle transverse angle (PTA, namely the E angle), and pedicle sagittal angle (PTA, namely the F angle)...
February 2, 2017: Folia Morphologica (Warsz)
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