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https://www.readbyqxmd.com/read/28550406/statistical-shape-modelling-to-aid-surgical-planning-associations-between-surgical-parameters-and-head-shapes-following-spring-assisted-cranioplasty
#1
Naiara Rodriguez-Florez, Jan L Bruse, Alessandro Borghi, Herman Vercruysse, Juling Ong, Greg James, Xavier Pennec, David J Dunaway, N U Owase Jeelani, Silvia Schievano
PURPOSE: Spring-assisted cranioplasty is performed to correct the long and narrow head shape of children with sagittal synostosis. Such corrective surgery involves osteotomies and the placement of spring-like distractors, which gradually expand to widen the skull until removal about 4 months later. Due to its dynamic nature, associations between surgical parameters and post-operative 3D head shape features are difficult to comprehend. The current study aimed at applying population-based statistical shape modelling to gain insight into how the choice of surgical parameters such as craniotomy size and spring positioning affects post-surgical head shape...
May 26, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28514018/salvage-of-postcranioplasty-implant-exposure-using-free-tissue-transfer
#2
Pang-Yun Chou, Cheng-Hung Lin, Chung-Chen Hsu, Wei-Hsun Yang, Alex A Kane, Chih-Hung Lin
BACKGROUND: Refractory implant exposure is frustrating after cranioplasty. The purpose of this study was for the authors to present their experience with free tissue transfer for salvage of postcranioplasty implant exposure. METHODS: A retrospective medical chart review was conducted on all free tissue transfers performed for exposed implant coverage after cranioplasty between January 2004 and February 2016. RESULTS: Twelve free flaps were performed in 11 patients who underwent postcranioplasty with implant exposure, and whose attempted implant coverage using locoregional flaps had failed...
May 17, 2017: Head & Neck
https://www.readbyqxmd.com/read/28512613/comparison-of-complications-following-cranioplasty-using-a-sterilized-autologous-bone-flap-or-polymethyl-methacrylate
#3
Sung Hoon Kim, Dong Soo Kang, Jin Hwan Cheong, Jung Hee Kim, Kwan Young Song, Min Ho Kong
OBJECTIVE: The aims of current study are to compare complications following cranioplasty (CP) using either sterilized autologous bone or polymethyl methacrylate (PMMA), and to identify the risk factors for two of the most common complications: bone flap resorption (BFR) and surgical site infection (SSI). METHODS: Between January 2004 and December 2013, 127 patients underwent CP and were followed at least 12 months. Variables, including sex, age, initial diagnosis, time interval between decompressive craniectomy (DC) and CP, operation time, size of bone flap, and presence of ventriculo-peritoneal shunt, were analyzed to identify the risk factors for BFR and SSI...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28512612/review-of-cranioplasty-after-decompressive-craniectomy
#4
REVIEW
Yong Jun Cho, Suk Hyung Kang
Cranioplasty is an in evitable operation conducted after decompressive craniectomy (DC). The primary goals of cranioplasty after DC are to protect the brain, achieve a natural appearance and prevent sinking skin flap syndrome (or syndrome of the trephined). Furthermore, restoring patients' functional outcome and supplementing external defects helps patients improve their self-esteem. Although early cranioplasty is preferred in recent year, optimal timing for cranioplasty remains a controversial topic. Autologous bone flaps are the most ideal substitute for cranioplasty...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28505594/the-rheological-behavior-of-a-fast-setting-calcium-phosphate-bone-cement-and-its-dependence-on-deformation-conditions
#5
Erdem Şahin, Dilhan M Kalyon
Calcium phosphate cements are osteoconductive biomaterials that are widely used for bone repair and regeneration applications, including spinal fusion, vertebroplasty, khyphoplasty, cranioplasty and periodontal surgeries. The flow and deformation behavior (rheology) and injectability of the calcium phosphate bone cements to the treatment site are governed by the setting kinetics of the cement during which the initially flowable, viscous cement paste transforms into a rigid elastic solid. Here time-dependent development of the linear viscoelastic properties of a brushite-forming calcium phosphate cement are characterized and linked to the mechanism and kinetics of the setting reaction and to the injectability window available during the surgical applications of the cement...
May 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28504874/cranioplasty-with-adipose-derived-stem-cells-beta-tricalcium-phosphate-granules-and-supporting-mesh-six-year-clinical-follow-up-results
#6
Tuomo Thesleff, Kai Lehtimäki, Tero Niskakangas, Sanna Huovinen, Bettina Mannerström, Susanna Miettinen, Riitta Seppänen-Kaijansinkko, Juha Öhman
Several alternative techniques exist to reconstruct skull defects. The complication rate of the cranioplasty procedure is high and the search for optimal materials and techniques continues. To report long-term results of patients who have received a cranioplasty using autologous adipose-derived stem cells (ASCs) seeded on beta-tricalcium phosphate (betaTCP) granules. Between 10/2008 and 3/2010, five cranioplasties were performed (four females, one male; average age 62.0 years) using ASCs, betaTCP granules and titanium or resorbable meshes...
May 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28502686/customized-polymethylmethacrylate-cranioplasty-implants-using-3d-printed-polylactic-acid-molds-technical-note-with-2-illustrative-cases
#7
Joe Abdel Hay, Tarek Smayra, Ronald Moussa
OBJECTIVE: Prefabricated customized cranioplasty implants are anatomically more accurate than manually shaped acrylic implants but remain costly. The authors describe a new cost-effective technique of producing customized polymethylmethacrylate (PMMA) cranioplasty implants using prefabricated 3D printed molds. METHODS: The first patient had a left frontal cranial defect following a craniotomy for a glial tumor. A 3D image of his skull was obtained from axial 0.6mm computed tomography (CT) scan images...
May 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28498056/risk-factors-for-surgical-site-infections-and-assessment-of-vancomycin-powder-as-a-preventive-measure-in-patients-undergoing-first-time-cranioplasty
#8
Kingsley O Abode-Iyamah, Hsiu-Yin Chiang, Nolan Winslow, Brian Park, Mario Zanaty, Brian J Dlouhy, Oliver E Flouty, Zachary D Rasmussen, Loreen A Herwaldt, Jeremy D Greenlee
OBJECTIVE Craniectomy is often performed to decrease intracranial pressure following trauma and vascular injuries. The subsequent cranioplasty procedures may be complicated by surgical site infections (SSIs) due to prior trauma, foreign implants, and multiple surgeries through a common incision. Several studies have found that intrawound vancomycin powder (VP) is associated with decreased risk of SSIs after spine operations. However, no previously published study has evaluated the effectiveness of VP in cranioplasty procedures...
May 12, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28488350/cranial-reconstruction-using-allogeneic-mesenchymal-stromal-cells-a-phase-1-first-in-human-trial
#9
David Anthony Morrison, Alan Matthew Kop, Anastasia Nilasaroya, Marian Sturm, Kathryn Shaw, Stephen Honeybul
Cranioplasty is necessary for patients that have undergone craniectomy following trauma, stroke or other causes of elevated intracranial pressure. This study assessed the effectiveness of treating cranial defects with a combination of allogeneic mesenchymal stromal cells (MSC) on a ceramic carrier and polymer scaffold, to produce viable bone and healing of a cranial void. Patients underwent a baseline CT scan for construct design. Two sets of interlocking moulds were 3D-printed to enable shaping of two polymer meshes which formed the boundaries of the construct corresponding to restoration of the skull interna and externa...
May 9, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28481392/customised-cranioplasty-implant-for-decompressive-craniectomy-patients-a-technical-note
#10
Kaif Mohammad
Cranioplasty is a commonly performed procedure following decompressive craniectomy. The patients are usually young earning persons and increasing cost of treatment is difficult to bear especially in low and middle income countries. A variety of options are available for cranioplasty ranging from autologus bone graft to xenograft and synthetic materials. Presently the autologous cryopreserved or subcutaneously preserved bone graft is considered as preferred choice but is has its drawback of bone resorption and infection ...
March 25, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28468142/craniotomy-of-the-fused-sagittal-suture-over-the-superior-sagittal-sinus-is-a-safe-procedure
#11
David Kölby, Sara Fischer, Khalid Arab, Giovanni Maltese, Robert Olsson, Anna Paganini, Peter Tarnow, Lars Kölby
INTRODUCTION: Spring-assisted cranioplasty to correct sagittal synostosis is based on midline craniotomy through the closed sagittal suture, over the superior sagittal sinus (SSS). The aim of the present study was to evaluate the perioperative safety of this technique. MATERIALS AND METHODS: This is a retrospective study of all patients operated with median craniotomy and springs from 1998 to the end of 2015. For comparison, all Pi-plasties performed during the same time interval were also evaluated...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28458969/bmp-7-preserves-surface-integrity-of-degradable-ceramic-cranioplasty-in-a-g%C3%A3-ttingen-minipig-model
#12
J Camilo Roldán, Peter Schulz, Tim Klünter, Ulrike Deisinger, Claudius Diez, Waltraud Waiss, Christian Kirschneck, Torsten E Reichert, Rainer Detsch
BACKGROUND: The aim of the study was to evaluate the integrity of a craniotomy grafted site in a minipig model using different highly porous calcium phosphate ceramic scaffolds either loaded or nonloaded with bone morphogenetic protein-7 (BMP-7). METHODS: Four craniotomies with a diameter of 15 mm (critical-size defect) were grafted with different highly porous (92-94 vol%) calcium phosphate ceramics [hydroxyapatite (HA), tricalcium phosphate (TCP), and biphasic calcium phosphate (BCP; a mixture of HA and TCP)] in 10 Göttingen minipigs: (a) group I (n = 5): HA versus BCP; (b) group II (n = 5): TCP versus BCP...
March 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28457859/clinical-and-radiological-assessment-of-cerebral-hemodynamics-after-cranioplasty-for-decompressive-craniectomy-a-clinical-study
#13
Perikal J Parichay, Kiran Khanapure, Krishna C Joshi, T J Aniruddha, M Sandhya, A S Hegde
OBJECTIVES: To find the correlation between radiologically proven improvement in cerebral hemodynamics with clinical improvement in patients undergoing cranioplasty. MATERIAL AND METHODS: The study is a prospective observational study of 10 cases, in M S Ramaiah Institute of Neurosciences, involving patients treated by a decompressive craniectomy for intractable intra cranial hypertension either due to trauma or stroke and afterwards underwent cranioplasty. RESULTS: Of the 10 patients, 70% patients showing significant improvement in motor functions on Barthel index scale, 60% patients showed improvement in speech, mean duration from date of decompressive craniectomy to cranioplasty being 122...
April 27, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28457727/-orbitofrontal-bone-reconstruction-with-cutting-guides
#14
M Atanasiu, A Paré, A Joly, D Goga, B Laure
INTRODUCTION: Reconstruction of craniofacial defects due to traumatic injuries is a challenge for a reconstructive surgeon, given the functional impact, the aesthetic impact and the geometric complexity of the craniofacial skeleton. The use of cutting and repositioning guides enables a new approach from the craniofacial reconstruction with bone grafts on measure. We are presented to illustrate this technique the case of a patient. OBSERVATION: The patient was 50 years old, he presented a traumatic facial sequelar: a left frontal craniofacial deformation, an enlarged left orbit with enophthalmos and valgus left zygoma...
April 27, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28452617/intradiploic-encephalocele-of-the-primary-motor-cortex-in-an-adult-patient-electrophysiological-implications-during-surgery
#15
Luca Valci, Martina Dalolio, Dominique Kuhlen, Emanuele Pravatà, Claudio Gobbi, Michael Reinert
Encephaloceles are herniations of brain parenchyma through congenital or acquired osseous-dural defects of the skull base or cranial vault. Different types of symptoms, due to CSF fistulas, meningitis, or seizures, are often associated with this condition. The authors present a rare case of spontaneous right frontal parasagittal encephalocele in a 70-year-old man who was experiencing a spastic progressive paresis of his left lower limb. Results of routine electrophysiological workup (motor evoked potentials, somatosensory evoked potentials, and electroneuromyography), as well as those of MRI of the spinal cord, were normal...
April 28, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28437812/infection-rate-in-1033-elective-neurosurgical-procedures-at-a-university-hospital-in-south-china
#16
Hongwei Zhu, Xiyao Liu, Zhanxiang Wang
Objective Infection following surgery is a serious complication, especially in neurosurgery. The aim of the study is to report the change of incidence rates of infection in patients undergoing elective neurosurgical procedures at a university hospital in South China as well as the risk factors. Material and Methods The medical records and postoperative courses for patients undergoing 1,033 neurosurgical procedures from 2008 to 2014 were reviewed retrospectively to determine the incidence of neurosurgical infection, the identity of the offending organisms, and the factors associated with infection...
April 24, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28434961/cranioplasty-infection-and-resorption-are-associated-with-presence-of-a-ventriculoperitoneal-shunt-a-systematic-review-and-meta-analysis
#17
REVIEW
Christian M Mustroph, James G Malcolm, Rima S Rindler, Jason K Chu, Jonathan A Grossberg, Gustavo Pradilla, Faiz U Ahmad
BACKGROUND: Following decompressive craniectomy, hydrocephalus is a common complication often requiring placement of a ventriculoperitoneal shunt (VPS). Complications in the presence of a VPS have been reported but without clear association. METHODS: PRISMA guidelines were used to perform a literature search using PubMed to identify articles that published the complication rates associated with staged or simultaneous cranioplasty and VPS. From event rates, odds ratios [OR, 95% Confidence Interval (CI)] of complications were calculated...
April 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28434829/use-of-cutting-guides-during-craniosynostosis-sequelae-surgery-a-comparative-study-between-computer-assisted-planning-and-post-operative-results
#18
Chrystelle Queiros, Aline Joly, Arnaud Paré, Antoine Listrat, Nadine Travers, Dominique Goga, Boris Laure
BACKGROUND: The authors compared results of craniofacial reconstruction surgery using cutting guides with planned reconstruction on patients presenting craniosynostosis surgery sequelae. METHODS: This is a retrospective study performed on seven patients who had undergone craniofacial reconstructive surgery in University Hospital Center of Tours (France) in 2015. Patients had long-term sequelae of trigonocephaly and anterior plagiocephaly surgery. 3D computer model was constructed, based on CT scans and used for surgical planning...
March 28, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28431953/cryostored-autologous-skull-bone-for-cranioplasty-a-study-on-cranial-bone-flaps-viability-and-microbial-contamination-after-deep-frozen-storage-at-80%C3%A2-c
#19
David Yuen Chung Chan, Yi Tan Mok, Ping Kuen Lam, Cindy See Wai Tong, Stephanie Chi Ping Ng, Tin Fung David Sun, Wai Sang Poon
Craniectomy is a life-saving procedure. Subsequent cranioplasty with autologous skull bone has a bone resorption rate from 4% to 22.8% and an infection rate from 3.3% to 26%. There are concerns with their viability and the potential microbial contamination as they were explanted for a long period of time. Eighteen cranial bone flaps stored at Prince of Wales Hospital Skull Bone Bank during the period from June 2011 to March 2016 were identified. Ethics approval was obtained. Bone chips and deep bone swabs were collected for osteoblast culture and microbial culture...
April 18, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28427053/growing-skull-fracture-and-the-orbitocranial-variant-nuances-of-surgical-management
#20
Vikram Singh, Gopalakrishnan M Sasidharan, Dhananjaya Ishwar Bhat, Bhagavatula Indira Devi
AIMS: Growing skull fracture (GSF) is a rare complication resulting from diastatic enlargement of a pediatric skull fracture. Orbitocranial GSF is a distinct variant with more complex management issues due to the displacement of the globe. This study aims to discuss surgical considerations in the management of GSF, with particular reference to orbitocranial variants. METHODS: We conducted a retrospective analysis of 7 children operated for GSFs at our institute from 2008 to 2015...
April 21, 2017: Pediatric Neurosurgery
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