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https://www.readbyqxmd.com/read/28444241/cervical-spine-muscle-tendon-unit-length-differences-between-neutral-and-forward-head-postures-biomechanical-study-using-human-cadaveric-specimens
#1
Saeed Khayatzadeh, Olivia A Kalmanson, Dale Schuit, Robert M Havey, Leonard I Voronov, Alexander J Ghanayem, Avinash G Patwardhan
Background: Forward Head Posture (FHP) may be associated with neck pain and poor health-related quality of life. Literature describes only qualitative muscle length changes associated with FHP. Objective: To quantify how muscle-tendon unit lengths are altered when human cadaveric specimens are placed in alignments representing different severities of FHP. Design: Biomechanical study using 13 fresh-frozen cadaveric cervical spine specimens (Occiput-T1, 54±15yrs)...
April 21, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28436919/a-machine-learning-method-for-fast-and-accurate-characterization-of-depth-of-interaction-gamma-cameras
#2
Stefano Pedemonte, Larry Pierce, Koen Van Leemput
Measuring the depth-of-interaction (DOI) of gamma photons enables increasing the resolution of emission imaging systems. Several design variants of DOI-sensitive detectors have been recently introduced to improve the performance of scanners for Positron Emission Tomography (PET). However, the accurate characterization of the response of DOI detectors, necessary to accurately measure the DOI, remains an unsolved problem. Numerical simulations are, at the state of the art, imprecise, while measuring directly the characteristics of DOI detectors experimentally is hindered by the impossibility to impose the depth-of-interaction in an experimental set-up...
April 24, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28436024/hair-diameter-evaluation-in-different-regions-of-the-safe-donor-area-in-asian-populations
#3
Jae H Park, Jae M Park, Na R Kim, Kotchamol Manonukul
BACKGROUND: There is little information about how hair diameter differences within the safe donor area. Thicker or thinner hair may be needed depending on the recipient area, hairline design, and surgical purpose. METHODS: Thirty-eight non-alopecic subjects (19 males and 19 females) were evaluated. The safe donor area was defined as the area contained within 28 cm from the horizontal plane of the upper border of the hair rim to the vertical line of the bilateral external acoustic meatus...
April 24, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28413721/aspects-of-gorgonopsian-paleobiology-and-evolution-insights-from-the-basicranium-occiput-osseous-labyrinth-vasculature-and-neuroanatomy
#4
Ricardo Araújo, Vincent Fernandez, Michael J Polcyn, Jörg Fröbisch, Rui M S Martins
Synapsida, the clade including therapsids and thus also mammals, is one of the two major branches of amniotes. Organismal design, with modularity as a concept, offers insights into the evolution of therapsids, a group that experienced profound anatomical transformations throughout the past 270 Ma, eventually leading to the evolution of the mammalian bauplan. However, the anatomy of some therapsid groups remains obscure. Gorgonopsian braincase anatomy is poorly known and many anatomical aspects of the brain, cranial nerves, vasculature, and osseous labyrinth, remain unclear...
2017: PeerJ
https://www.readbyqxmd.com/read/28409288/temporary-fusionless-posterior-occipitocervical-fixation-for-a-proximal-junctional-type-ii-odontoid-fracture-after-previous-c2-pelvis-fusion-case-report-description-of-a-new-surgical-technique-and-review-of-the-literature
#5
Alexander A Theologis, Vedat Deviren, Bobby Tay
PURPOSE: Axial fractures in patients with a previous C2-pelvis posterior instrumented fusion are rare and may be challenging to manage. Motion preservation in the axial spine for these patients is important, as the C1-2 and Occipit-C1 joints are their only remaining mobile spinal segments. In this unique report, we present for the first time the use of a fusionless occipitocervical operation for the treatment of a type II odontoid fracture and unilateral C2 pars fracture adjacent to a previous C2-pelvis posterior instrumented fusion...
April 13, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28408261/use-of-intraoperative-navigation-for-reconstruction-of-the-c1-lateral-mass-after-resection-of-aneurysmal-bone-cyst
#6
Jennifer Neva, Brandon W Smith, Jacob R Joseph, Paul Park
BACKGROUND: Aneurysmal bone cysts (ABC) are rare blood-filled cystic lesions that are found in the long bones and spine. Here, we present a case of an ABC found in the lateral mass and lamina of C1. Lesions in this area provide a surgical challenge due to its difficulty in access as well as its need for reconstruction. We describe a novel use of intraoperative navigation (ION) to assist in the placement of a C1 lateral mass titanium cage. CASE DESCRIPTION: An 18-year-old female presented with headaches and progressive neck pain...
April 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28387916/occiput-spine-relationship-shoulders-are-more-important-than-head
#7
A Svelato, A Ragusa, P Alimondi, M Di Tommaso, R Marci, V Barbagallo, R D F Alampi, G Calagna, A Perino
OBJECTIVE: To understand the role of fetal spine position in determining a fetal head position at the time of birth and modality of delivery. PATIENTS AND METHODS: This was a multicenter prospective observational study. Fetal occiput and spine position were evaluated by intrapartum ultrasound. Eighty-six women were eligible for inclusion in the study. Occiput rotational movements and modality of delivery in relation to the fetal spine position were investigated...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28369942/sonographic-evaluation-of-the-fetal-spine-position-and-success-rate-of-manual-rotation-of-the-fetus-in-occiput-posterior-position-a-randomized-controlled-trial
#8
Bianca Masturzo, Antonio Farina, Lorenza Attamante, Annalisa Piazzese, Alessandro Rolfo, Pietro Gaglioti, Tullia Todros
BACKGROUND: To evaluate whether sonographic (US) diagnosis of the fetal spine position could increase the success rate of manual rotation of the fetal occiput (MRFO) in second-stage arrest in persistent occiput posterior position (OPP). METHODS: In this randomized controlled parallel single-center trial, 58 nulliparous in second-stage arrest of labor with fetus in cephalic presentation and OPP diagnosed by US were randomly assigned to group A where the fetal spine position was not known by the operator or to group B where the operator knew it...
April 3, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28368798/-risks-factors-of-cesarean-delivery-after-3hours-of-delayed-pushing
#9
S Cheniere, S Ménard, M-C Lamau, F Goffinet, C Le Ray
OBJECTIVES: Identify the factors associated with caesarean delivery for unengaged fetal head beyond 3hours of passive second stage of labor, among primiparous patients. METHODS: A case-control study conducted in level III universitary center between October 2012 and September 2015. Only primiparous at term, with a singleton, cephalic fetus and a passive second stage of labor prolonged over 3hours before pushing were included. During the second stage of labor, patients who had caesarean for abnormal fetal heart rate were excluded...
February 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28327433/sonographic-prediction-of-outcome-of-vacuum-deliveries-a%C3%A2-multicenter-prospective-cohort-study
#10
Birgitte H Kahrs, Sana Usman, Tullio Ghi, Aly Youssef, Erik A Torkildsen, Elsa Lindtjørn, Tilde B Østborg, Sigurlaug Benediktsdottir, Lis Brooks, Lotte Harmsen, Pål R Romundstad, Kjell Å Salvesen, Christoph C Lees, Torbjørn M Eggebø
BACKGROUND: Safe management of the second stage of labor is of great importance. Unnecessary interventions should be avoided and correct timing of interventions should be focused. Ultrasound assessment of fetal position and station has a potential to improve the precision in diagnosing and managing prolonged or arrested labors. The decision to perform vacuum delivery is traditionally based on subjective assessment by digital vaginal examination and clinical expertise and there is currently no method of objectively quantifying the likelihood of successful delivery...
March 19, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28278181/the-myodural-bridge-existing-in-the-nephocaena-phocaenoides
#11
Pei Liu, Chan Li, Nan Zheng, Qiang Xu, Sheng-Bo Yu, Hong-Jin Sui
Recent studies have identified that the myodural bridge (MDB) between the rectus capitis posterior minor (RCPmi) and the cervical spinal dura mater in the posterior atlanto-occipital interspace in humans. And it was supposed that the MDB may play essential physiological roles. As a result, the MDB is possibly a highly conserved structure in the evolution of mammals. However, there is little confirmative description about the existence of the MDB in marine mammals. The objective of this study was to explore the existence and the fiber property of the MDB in the Neophocaena phocaenoides...
2017: PloS One
https://www.readbyqxmd.com/read/28274183/cervical-posture-analysis-in-dental-students-and-its-correlation-with-temporomandibular-disorder
#12
Mariana Barbosa Câmara-Souza, Olívia Maria Costa Figueredo, Paulo Raphael Leite Maia, Isabelle de Sousa Dantas, Gustavo Augusto Seabra Barbosa
OBJECTIVE: To evaluate the relationship between temporomandibular disorders (TMD) and craniocervical posture in the sagittal plane measured from lateral radiographs of the head. METHODS: The sample was comprised of 80 randomly selected students of dentistry at the Federal University of Rio Grande do Norte. Research Diagnostic Criteria for TMD (RDC/TMD) was used to evaluate the signs and symptoms of TMD. Lateral radiographs of each individual were used to measure the position of the hyoid bone, the craniocervical angle, and the occiput-atlas distance...
March 8, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28270307/midline-capillary-formation-nuchae-and-age
#13
Marvin H Klapman, Michael Batech
Midline capillary formation nuchae (MCFN) consists of blanchable pink macules located around the midline of the occiput and nape. It has been implicated in the literature as a risk factor for angiosarcoma and might be related to a decrease in innervation of the involved capillaries. Although there is ample literature on its prevalence from birth through adult life, the literature in late life is sparse. The objective of this study was to determine the prevalence in late life, whether it is truly a risk factor for angiosarcoma and whether it might be an indication of a systemic neuroendocrine effect or a local reaction...
2017: Skinmed
https://www.readbyqxmd.com/read/28262513/analysis-of-the-cephalometric-changes-in-the-first-3-months-after-spring-assisted-cranioplasty-for-scaphocephaly
#14
O Ou Yang, D D Marucci, R J Gates, M Rahman, J Hunt, M P Gianoutsos, W R Walsh
BACKGROUND: Spring-assisted cranioplasty (SAC) has become an accepted treatment for patients with sagittal craniosynostosis; however, the early effects of springs on skull dimensions have never been assessed with objective measurements in the literature. The present study evaluated the changes in skull dimensions and intracranial volume (ICV) during the first 3 months after SAC for sagittal synostosis. METHODS: Sixteen patients with sagittal synostosis underwent SAC...
January 9, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28254638/deliberately-light-interpersonal-contact-affects-the-control-of-head-stability-during-walking-in-children-and-adolescents-with-cerebral-palsy
#15
Katrin Hanna Schulleri, Frauke Burfeind, Beate Höß-Zenker, Éva Feketené Szabó, Nadine Herzig, Annick Ledebt, Leif Johannsen
OBJECTIVE: To evaluate the potential of deliberately light interpersonal touch (IPT) for reducing excessive head and trunk sway during self-paced walking in children and adolescents with cerebral palsy (CP). DESIGN: Quasi-experimental, proof-of-concept study with between-groups comparison. SETTING: Ambulant care facility, community center. PARTICIPANTS: Children and adolescents (N=65), consisting of those with CP (spastic and ataxic, n=26; Gross Motor Function Classification System I-III; mean age, 9...
February 27, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28250638/odontoidectomy-through-posterior-midline-approach-followed-by-same-sitting-occipitocervical-fixation-a-cadaveric-study
#16
Ehab Mohamed Eissa, Mohamed Mohi Eldin
OBJECT: Atlantoaxial instability with irreducible odontoid process is one of the challenges in spine surgery. These lesions are commonly treated through anterior transoral approach which is followed by posterior atlantoaxial fusion. However, there are still many limitations, especially cerebrospinal fluid fistula with subsequent life-threatening infection, difficulty in cases with limited opening of mouth due to temporomandibular arthritis or anomalies of naso-oropharynx. Türe et al...
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28244946/a-randomized-crossover-study-comparing-cervical-spine-motion-during-intubation-between-two-lightwand-intubation-techniques-in-patients-with-simulated-cervical-immobilization-laryngoscope-assisted-versus-conventional-lightwand-intubation
#17
Tae Kyong Kim, Je-Do Son, Hyungseok Seo, Yun-Seok Lee, Jinyoung Bae, Hee-Pyoung Park
BACKGROUND: In patients with cervical immobilization, jaw thrust can cause cervical spine movement. Concurrent use of a laryngoscope may facilitate lightwand intubation, allowing midline placement and free movement of the lightwand in the oral cavity without jaw thrust. We compared the effects of laryngoscope-assisted lightwand intubation (LALI) versus conventional lightwand intubation (CLI) on cervical spine motion during intubation in patients with simulated cervical immobilization...
February 24, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28222704/duration-of-second-stage-of-labor-and-instrumental-delivery-as-risk-factors-for-severe-perineal-lacerations-population-based-study
#18
Marija Simic, Sven Cnattingius, Gunnar Petersson, Anna Sandström, Olof Stephansson
BACKGROUND: We sought to investigate the impact of the duration of second stage of labor on risk of severe perineal lacerations (third and fourth degree). METHODS: This population based cohort study was conducted in the Stockholm/Gotland region, Sweden, 2008-2014. Study population included 52 211 primiparous women undergoing vaginal delivery with cephalic presentation at term. Unconditional logistic regression analysis was used to calculate crude and adjusted odds ratios (OR), using 95% confidence intervals (CI)...
February 21, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28182521/efficacy-and-safety-of-a-new-coverlet-device-on-skin-microclimate-management-a-pilot-study-in-critical-care-patients
#19
O Forriez, J Masseline, D Coadic, V David, P Trouiller, B Sztrymf
OBJECTIVE: To test the effect of a new coverlet device, allowing air circulation at the body/underlying surface interface, on skin microclimate management. METHOD: This prospective observational pilot study took place in a 15-bed university-affiliated intensive care unit. Overall, 34 mechanically ventilated patients were included. Skin humidity and temperature were monitored before and after the implementation of the tested device at the occiput, scapulas, buttocks and sacrum...
February 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28146571/evolution-of-a-functional-head-joint-in-deep-sea-fishes-stomiidae
#20
Nalani K Schnell, G David Johnson
The head and anterior trunk region of most actinopterygian fishes is stiffened as, uniquely within vertebrates, the pectoral girdles have a direct and often strong connection through the posttemporal to the posterior region of the skull. Members of the mesopelagic fish family Stomiidae have their pectoral girdle separated from the skull. This connection is lost in several teleost groups, but the stomiids have an additional evolutionary novelty-a flexible connection between the occiput and the first vertebra, where only the notochord persists...
2017: PloS One
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