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https://www.readbyqxmd.com/read/27901551/prolonged-second-stage-what-is-the-optimal-length
#1
Alexis C Gimovsky, Vincenzo Berghella
Importance: Prolonged second stage of labor is a clinical dilemma in which controversy exists on whether extending labor in nulliparous women with epidural anesthesia decreases the incidence of cesarean delivery without increasing maternal or neonatal risks. Objective: This narrative review was conducted to assess the current literature on management of and risks associated with a prolonged second stage in nulliparous women with epidurals. Evidence Acquisition: A review of the current literature was performed to evaluate the incidence of cesarean delivery and the maternal and neonatal outcomes...
November 2016: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/27879507/pedicle-screw-combined-with-lateral-mass-screw-fixation-in-the-treatment-of-basilar-invagination-and-congenital-c2-c3-fusion
#2
Shenglin Wang, Chao Wang, Huijie Leng, Weidong Zhao, Ming Yan, Haitao Zhou
STUDY DESIGN: Clinical evaluation of a surgical fixation technique featuring combined use of pedicle screw and lateral mass screw (LMS). OBJECTIVE: Introduction of a novel technique for the treatment of congenital C2-C3 fusion and basilar invagination (BI). SUMMARY OF BACKGROUND: Posterior occipitocervical fixation using C2 pedicle screw was widely used for BI. However, in cases where BI is concurrent with congenital C2-C3 fusion, the C2 pedicles tend to be thinner than that in normal population and hence more likely to fail...
December 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27878856/a-semiparametric-mixture-cure-survival-model-for-left-truncated-and-right-censored-data
#3
Chyong-Mei Chen, Pao-Sheng Shen, James Cheng-Chung Wei, Lichi Lin
In follow-up studies, the disease event time can be subject to left truncation and right censoring. Furthermore, medical advancements have made it possible for patients to be cured of certain types of diseases. In this article, we consider a semiparametric mixture cure model for the regression analysis of left-truncated and right-censored data. The model combines a logistic regression for the probability of event occurrence with the class of transformation models for the time of occurrence. We investigate two techniques for estimating model parameters...
November 23, 2016: Biometrical Journal. Biometrische Zeitschrift
https://www.readbyqxmd.com/read/27873038/the-importance-of-nonlinear-tissue-modelling-in-finite-element-simulations-of-infant-head-impacts
#4
Xiaogai Li, Håkan Sandler, Svein Kleiven
Despite recent efforts on the development of finite element (FE) head models of infants, a model capable of capturing head responses under various impact scenarios has not been reported. This is hypothesized partially attributed to the use of simplified linear elastic models for soft tissues of suture, scalp and dura. Orthotropic elastic constants are yet to be determined to incorporate the direction-specific material properties of infant cranial bone due to grain fibres radiating from the ossification centres...
November 21, 2016: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/27832335/a-new-method-for-measurement-of-occipitocervical-angle-by-occiput-c3-angle
#5
Sombat Kunakornsawat, Tinnakorn Pluemvitayaporn, Pritsanai Pruttikul, Suppachai Punpichet, Chaiwat Piyasakulkaew, Alisara Arirachakaran, Jatupon Kongtharvonskul
BACKGROUND: The description of the measurement technique of the posterior occiput-third cervical spine (OC3) angle-before performing occipitocervical fusion is still controversial. Setting an appropriate alignment in occipitocervical instrumentation is important for successful fixation surgery. Several methods were used for quantifying occipitocervical alignment on the lateral radiograph. This study was performed to describe a measurement technique of OC3 angle and comparing reliability and reproducibility in the measurement of occipitocervical angle with previous method...
November 10, 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27830891/morphometric-multislice-computed-tomography-examination-of-the-craniovertebral-junction-in-neck-flexion-and-extension
#6
Slobodan Marinkovic, Ivan Milić, Igor Djorić, Luciano Brigante, Aleksandar Miljatović, Laslo Puškaš, Slobodan Kapor, Jelena Boljanović
BACKGROUND: Detailed study of the craniovertebral junction (CVJ) is necessary to completely understand the mechanism of its flexion and extension. MATERIALS AND METHODS: One cadaver head was sectioned in the sagittal plane. Also, in 22 volunteers, examined using the multislice computerized tomography (MSCT), 14 parameters and 2 angles were measured in the neutral position, flexion and extension. RESULTS: The obtained measurements showed the anterior part of the occiput to move inferiorly in flexion, and the anterior atlas arch and the tip of the dens to get closer to the basion...
November 10, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27793113/pre-induction-translabial-ultrasound-measurements-in-predicting-mode-of-delivery-compared-to-bishop-score-a-cross-sectional-study
#7
Soghra Khazardoost, Fahimeh Ghotbizadeh Vahdani, Sahar Latifi, Sedighe Borna, Maryam Tahani, Mohammad Ali Rezaei, Masoomeh Shafaat
BACKGROUND: By increased concerns about the accuracy of the traditional methods to predict outcomes after induction of labor, developing new standards has a great clinical importance. Here, we compared the predictive value of translabial ultrasound measurements with Bishop Score to determine the suitability of induction of labor. METHODS: A homogenous population of primigravid women was recruited. Induction of labor was performed with low-dose infusion of oxytocin...
October 28, 2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27757567/traumatic-atlanto-occipital-dislocation-in-children-a-case-based-update-on-clinical-characteristics-management-and-outcome
#8
Thomas Beez, Jennifer Brown
BACKGROUND: Atlanto-occipital dislocation (AOD) is a rare but severe sequela of high energy trauma. Children are at increased risk, due to their immature spine and biomechanical characteristics. LITERATURE REVIEW: The prevailing mechanism of injury is motor vehicle collision as passenger. AOD commonly presents with cardiorespiratory arrest, spinal cord injury or cranial nerve deficits. Concomitant injuries, such as traumatic brain injury, are frequently encountered...
October 18, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27704673/re-narrow-subpubic-arch-angle-is-associated-with-higher-risk-of-persistent-occiput-posterior-position-at-delivery-t-ghi-a-youssef-f-martelli-f-bellussi-e-aiello-g-pilu-n-rizzo-t-frusca-d-arduini-and-g-rizzo-ultrasound-obstet-gynecol-2016-48-511-515
#9
https://www.readbyqxmd.com/read/27636191/upper-cervical-spine-loading-simulating-a-dynamic-low-speed-collision-significantly-increases-the-risk-of-pain-compared-to-quasistatic-loading-with-equivalent-neck-kinematics
#10
Timothy P Holsgrove, Nicolas V Jaumard, Nina Zhu, Nicholas S Stiansen, William C Welch, Beth A Winkelstein
Dynamic cervical spine loading can produce facet capsule injury. Despite a large proportion of neck pain being attributable to the C2/C3 facet capsule, potential mechanisms are not understood. This study replicated low-speed frontal and rear-end traffic collisions in Occiput-C3 human cadaveric cervical spine specimens, and used kinematic and full-field strain analyses to assess injury. Specimens were loaded quasistatically in flexion and extension before and after dynamic rotation of C3 at 100°/sec. Global kinematics in the sagittal plane were tracked at 1kHz and C2/C3 facet capsule full-field strains were measured...
September 16, 2016: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27634982/177lu-dotatate-prrt-in-recurrent-skull-base-phosphaturic-mesenchymal-tumor-causing-osteomalacia-a-potential-application-of-prrt-beyond-neuroendocrine-tumors
#11
REVIEW
Sandip Basu, Preeti Fargose
The potential of peptide receptor radionuclide therapy (PRRT) is described in a case of recurrent inoperable phosphaturic mesenchymal tumor causing osteomalacia in the left basiocciput, for which the patient had undergone surgery twice previously. After one cycle of PRRT, there was good symptomatic improvement, with a modest reduction in uptake on both (68)Ga-DOTATATE PET/CT and (18)F-FDG PET/CT suggesting a favorable response. Hence, treatment with a second cycle was considered. Being somatostatin receptor-avid, this rare group of tumors when inoperable or recurrent may potentially be targeted with PRRT...
December 2016: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/27630479/comparison-of-hinged-and-contoured-rods-for-occipitocervical-arthrodesis-in-adults-a-clinical-study
#12
Kingsley O Abode-Iyamah, Brian J Dlouhy, Alejandro J Lopez, Arnold H Menezes, Patrick W Hitchon, Nader S Dahdaleh
INTRODUCTION: A rigid construct that employs an occipital plate and upper cervical screws and rods is the current standard treatment for craniovertebral junction (CVJ) instability. A rod is contoured to accommodate the occipitocervical angle. Fatigue failure has been associated these acute bends. Hinged rod systems have been developed to obviate intraoperative rod contouring. OBJECT: The aim of this study is to determine the safety and efficacy of the hinged rod system in occipitocervical fusion...
July 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27615281/cranial-ontogeny-of-the-early-triassic-basal-cynodont-galesaurus-planiceps
#13
Sandra C Jasinoski, Fernando Abdala
Ontogenetic changes in the skull and mandible of thirty-one specimens of Galesaurus planiceps, a basal non-mammaliaform cynodont from the Early Triassic of South Africa, are documented. The qualitative survey indicated eight changes in the craniomandibular apparatus occurred during growth, dividing the sample into three ontogenetic stages: juvenile, subadult, and adult. Changes in the temporal region, zygomatic arch, occiput, and mandible occurred during the transition from the subadult to adult stage at a basal skull length of 90 mm...
September 12, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27609143/persistent-occiput-posterior-position-associated-to-asynclitism-solved-by-manual-rotation-is-always-possible-to-perform-safely-this-maneuver
#14
Antonio Malvasi, Andrea Tinelli
No abstract text is available yet for this article.
September 9, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27596243/inter-rater-reliability-of-clinical-mobility-measures-in-ankylosing-spondylitis
#15
J Calvo-Gutiérrez, J L Garrido-Castro, C González-Navas, M C Castro-Villegas, R Ortega-Castro, C López-Medina, P Font-Ugalde, A Escudero-Contreras, E Collantes-Estévez
BACKGROUND: Several measurements are often used in daily clinical practice in the assessment of Ankylosing Spondylitis (AS) patients. The Assessment in SpondyloArthiritis International Society (ASAS) recommend in its core set: chest expansion modified Schöber test, Occiput to wall distance, lateral lumbar flexion, cervical rotation and The Bath Ankylosing Spondylitis Metrology Index (BASMI). BASMI also includes five measurements, some of them recommended by ASAS. Three versions of BASMI have been published with different scales and intervals for each component of the index...
2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27559456/postoperative-increase-in-occiput-c2-angle-negatively-impacts-subaxial-lordosis-after-occipito-upper-cervical-posterior-fusion-surgery
#16
Taigo Inada, Takeo Furuya, Koshiro Kamiya, Mitsutoshi Ota, Satoshi Maki, Takane Suzuki, Kazuhisa Takahashi, Masashi Yamazaki, Masaaki Aramomi, Chikato Mannoji, Masao Koda
STUDY DESIGN: Retrospective case series. PURPOSE: To elucidate the impact of postoperative occiput-C2 (O-C2) angle change on subaxial cervical alignment. OVERVIEW OF LITERATURE: In the case of occipito-upper cervical fixation surgery, it is recommended that the O-C2 angle should be set larger than the preoperative value postoperatively. METHODS: The present study included 17 patients who underwent occipito-upper cervical spine (above C4) posterior fixation surgery for atlantoaxial subluxation of various etiologies...
August 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27472669/pediatric-occipitocervical-fusion-long-term-radiographic-changes-in-curvature-growth-and-alignment
#17
Eduardo Martinez-Del-Campo, Jay D Turner, Hector Soriano-Baron, Anna G U S Newcomb, Samuel Kalb, Nicholas Theodore
OBJECTIVE The authors assessed the rate of vertebral growth, curvature, and alignment for multilevel constructs in the cervical spine after occipitocervical fixation (OCF) in pediatric patients and compared these results with those in published reports of growth in normal children. METHODS The authors assessed cervical spine radiographs and CT images of 18 patients who underwent occipitocervical arthrodesis. Measurements were made using postoperative and follow-up images available for 16 patients to determine cervical alignment (cervical spine alignment [CSA], C1-7 sagittal vertical axis [SVA], and C2-7 SVA) and curvature (cervical spine curvature [CSC] and C2-7 lordosis angle)...
July 29, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27449685/secreting-follicle-stimulating-hormone-pituitary-carcinoma-with-cervical-metastasis
#18
Carly Grandidge, Andy Hall, Neil Kitchen
BACKGROUND: Pituitary carcinoma is defined by either metastases outside the central nervous system or noncontiguous foci within the central nervous system. This case report details the first documented case of a pathologically isolated follicle-stimulating hormone-secreting pituitary carcinoma and its presentation of metastasis. CASE DESCRIPTION: A 63-year-old man developed intrascapular pain radiating up his neck to his occiput. He had undergone a transsphenoidal hypophysectomy 2 years previously for an atypical pituitary macroadenoma...
September 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27436209/muscle-insertion-line-as-a-simple-landmark-to-identify-the-transverse-sinus-when-neuronavigation-is-unavailable
#19
Juri Kivelev, Riku Kivisaari, Mika Niemelä, Juha Hernesniemi
OBJECTIVE: Skull opening in occipital and suboccipital regions might be associated with risk of damage to the transverse venous sinus and the confluence of sinuses. We analyze the value of magnetic resonance (MR) imaging in localizing the venous sinuses in relation to the superior muscle insertion line (MIL) on the occipital bone. METHODS: We retrospectively analyzed head MR images of 100 consecutive patients imaged for any reason from 1 January 2013. All MR images were interpreted by a radiologist (R...
October 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27432170/treatment-of-acne-keloidalis-nuchae-a-systematic-review-of-the-literature
#20
REVIEW
Eric L Maranda, Brian J Simmons, Austin H Nguyen, Victoria M Lim, Jonette E Keri
Acne keloidalis nuchae (AKN) is a chronic inflammatory condition that leads to fibrotic plaques, papules and alopecia on the occiput and/or nape of the neck. Traditional medical management focuses on prevention, utilization of oral and topical antibiotics, and intralesional steroids in order to decrease inflammation and secondary infections. Unfortunately, therapy may require months of treatment to achieve incomplete results and recurrences are common. Surgical approach to treatment of lesions is invasive, may require general anesthesia and requires more time to recover...
September 2016: Dermatology and Therapy
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