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Occiput posterior

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https://www.readbyqxmd.com/read/29443820/unstable-c1-fracture-managed-with-internal-fixation-using-lateral-mass-screws-a-case-report
#1
Jonathan C Yu, Thomas E Niemeier, Sakthivel R Manoharan
CASE: A 47-year-old woman presented with an unstable C1 fracture after falling down several stairs. She was found to have a sagittal split fracture of the right C1 lateral mass extending into the posterior arch. The fracture was treated with a direct posterior osteosynthesis of C1 using lateral mass screws. CONCLUSION: Surgical management of unstable C1 fractures has traditionally involved posterior fusion of C1 to C2 or fusion from the occiput to C2. These fusion procedures can be quite functionally limiting...
February 14, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29430326/-adult-grisel-syndrome-and-cervical-skull-instability-transnasal-endoscopic-odontoidectomy-and-occipito-cervical-fusion-case-report-and-literature-review
#2
Roberto Herrera, Héctor Rojas, Ariel Estramian, Julieta Gómez, José Luis Ledesma, José Pablo, Julián Pastore
Background: Craniocervical junction pathology is infrequent in daily neurosurgical practice. In general, most of these lesions are of traumatic or rheumatic origin. Atlantoaxial instability of inflammatory origin (Grisel syndrome) is a rare entity of which only 16 adult cases have been reported in the literature. This pathology is characterized by the development of an osteolytic lesion at the level of the atlantoaxial joint after an infectious event, usually of the upper airways. Case Description: We present the case of a 76-year-old patient who attended our office for clinical symptoms of spinal instability secondary to an osteolytic lesion, with involvement of C1 and C2...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29390372/dynamic-paraspinal-muscle-impingement-causing-acute-hemiplegia-after-c1-posterior-arch-laminectomy-a-case-report
#3
Naoki Notani, Masashi Miyazaki, Toyomi Yoshiiwa, Toshinobu Ishihara, Shozo Kanezaki, Hiroshi Tsumura
RATIONALE: Acute neurological deficits following spinal surgery commonly result from epidural hematoma, surgical trauma, vascular compromise, and graft or hardware impingement, with the cause identified by magnetic resonance imaging (MRI). We present a rare case of dynamic paraspinal muscle impingement after C1 posterior arch laminectomy, which was diagnosed by myelography, with no significant findings on MRI. PATIENT CONCERNS: An 81-year-old, severely obese male, was referred to our department for the treatment of vertebral disease of the lumbar spine...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29381931/biomechanical-evaluation-of-a-novel-integrated-artificial-axis-a-finite-element-study
#4
Yongqiang Zheng, Jianhua Wang, Suixiang Liao, Dongsheng Zhang, Jinshan Zhang, Limin Ma, Hong Xia
Various modified instruments are used for the anterior reconstruction of the tumor lesion affecting the second cervical vertebra, but there have been no reports regarding individual integrated artificial axis (IAA) prosthesis fabricated by selective laser melting. In the present work, a new type of IAA prosthesis has been designed with a 3-dimensional (3D) finite element model of normal occiput-the fourth cervical vertebra being established to assess its biomechanics. For easy comparison, another 3D finite element model is also established for the T-shaped Harms cage and an additional posterior fixation was performed on each model...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29366610/-occiput-posterior-presentation-at-delivery-materno-foetal-outcomes-and-predictive-factors-of-rotation
#5
V Othenin-Girard, M Boulvain, M-J Guittier
OBJECTIVES: To describe the maternal and foetal outcomes of an occiput posterior foetal position at delivery; to evaluate predictive factors of anterior rotation during labour. METHODS: Descriptive retrospective analysis of a cohort of 439 women with foetuses in occiput posterior position during labour. Logistic regression analysis to quantify the effect of factors that may favour anterior rotation. RESULTS: Most of foetuses (64%) do an anterior rotation during labour and 13% during the expulsive phase...
January 20, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29301014/pedicled-vascularized-bone-grafts-for-posterior-occipitocervical-and-cervicothoracic-fusion-a-cadaveric-feasibility-study
#6
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Jay D Turner, Steve W Chang, Mark C Preul, Edward M Reece, U Kumar Kakarla
BACKGROUND: Arthrodesis is critical for achieving favorable outcomes in reconstructive spine surgery. Vascularized bone grafts (VBGs) have been successfully used to augment fusion rates in a variety of skeletal pathologies, and pedicled VBG has numerous advantages over free transfer VBG. Pedicled VBG has not previously been described for the posterior occipitocervicothoracic spine. OBJECTIVE: To identify, describe, and assess potential donor sites for pedicled VBGs from occiput to T12 using a cadaver model and to describe important technical considerations for graft harvest and placement...
December 30, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29137599/neonatal-outcomes-of-deliveries-in-occiput-posterior-position-when-delayed-pushing-is-practiced-a-cohort-study
#7
Kristina Dahlqvist, Maria Jonsson
BACKGROUND: To examine the impact of occiput posterior position, compared to occiput anterior position, on neonatal outcomes in a setting where delayed pushing is practiced. The specific aim was to estimate the risk of acidaemia. METHODS: Cohort study from a university hospital in Sweden between 2004 and 2012. Information was collected from a local database of 35,546 births. Umbilical artery sampling was routine. Outcomes were: umbilical artery pH < 7.00 and <7...
November 14, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29078945/fetal-malpresentation-and-malposition-diagnosis-and-management
#8
REVIEW
Rachel A Pilliod, Aaron B Caughey
Fetal malpresentation and fetal malposition are frequently interchanged; however, fetal malpresentation refers to a fetus with a fetal part other than the head engaging the maternal pelvis. Fetal malposition in labor includes occiput posterior and occiput transverse positions. Both fetal malposition and malpresentation are associated with significant maternal and neonatal morbidity, which have significant impact on patients and providers. Accurate diagnosis of both conditions is necessary for appropriate management...
December 2017: Obstetrics and Gynecology Clinics of North America
https://www.readbyqxmd.com/read/29040149/the-pantheon-variant-of-the-classic-cathedral-dome-procedure-for-parieto-occipital-skull-deformities
#9
Sebastian Eibach, Hop N Le, John Zovickian, Dachling Pang
OBJECTIVE: To describe a new technique for the reconstruction of parieto-occipital skull deformities. METHODS AND RESULTS: The technique is a variant of the previously described "cathedral dome procedure" used for frontal skull deformities. The authors apply the same principle of remodeling by making meridional slat craniotomies surrounding the depressed dome of the posterior skull deformity, followed by "green-stick fracture-reshaping" of the meridional slats to elevate and support the excised depressed dome...
October 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28965445/temporary-occipital-fixation-in-young-children-with-severe-cervical-thoracic-spinal-deformity
#10
Brian J Kelley, Anas A Minkara, Peter D Angevine, Michael G Vitale, Lawrence G Lenke, Richard C E Anderson
OBJECTIVE The long-term effects of instrumentation and fusion of the occipital-cervical-thoracic spine on spinal growth in young children are poorly understood. To mitigate the effects of this surgery on the growing pediatric spine, the authors report a novel technique used in 4 children with severe cervical-thoracic instability. These patients underwent instrumentation from the occiput to the upper thoracic region for stabilization, but without bone graft at the craniovertebral junction (CVJ). Subsequent surgery was then performed to remove the occipital instrumentation, thereby allowing further growth and increased motion across the CVJ...
October 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28917092/progressive-halo-vest-traction-preceding-posterior-occipitocervical-instrumented-fusion-for-irreducible-atlantoaxial-dislocation-and-basilar-invagination
#11
Peng Li, Deming Bao, Huijuan Cheng, Fanshuai Meng, Junwei Li
OBJECTIVES: Surgical treatment of irreducible atlantoaxial dislocation (IAAD) with basilar invagination (BI) is associated with high rates of severe complications, including mortality. This retrospective study investigated the safety and efficacy of progressive halo-vest traction for IAAD with BI prior to posterior occipitocervical instrumented fusion. PATIENTS AND METHODS: Between 2009 and 2013, 39 patients with IAAD with BI underwent preoperative reduction by progressive halo-vest traction for 20...
November 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28889406/intrapartum-transperineal-ultrasound-used-to-predict-cases-of-complicated-operative-vacuum-and-forceps-deliveries-in-nulliparous-women
#12
José A Sainz, José A García-Mejido, Adriana Aquise, María J Bonomi, Carlota Borrero, Paloma De La Fuente, Ana Fernández-Palacín
INTRODUCTION: The objective of this study was to investigate the predictive value of intrapartum transperineal ultrasound in the identification of complicated operative (vacuum or forceps) deliveries in nulliparous women. MATERIAL AND METHODS: Prospective observational study of nulliparous women with an indication for operative delivery who underwent intrapartum transperineal ultrasound before fetal extraction. Managing obstetricians were blinded to the ultrasound data...
December 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28840080/adult-case-of-atlantoaxial-rotatory-fixation-treated-with-in-situ-fixation-using-an-unusual-posterior-instrumentation-construct
#13
Yasuyoshi Miyao, Manabu Sasaki, Masao Umegaki, Kazuo Yonenobu
Atlantoaxial rotatory fixation (AARF) occurs commonly in children who have undergone trauma. It is usually corrected with conservative therapy. In this report, however, the patient was an adult with AARF who was treated surgically. A 64-year-old woman presented with a 1-year history of spastic gait and hand clumsiness. Imaging studies revealed the presence of AARF, os odontoideum, and severe spinal cord compression at that spinal level. As the AARF had not been responded to head traction with a halo device, we decided to treat the patient with in situ posterior fixation...
July 2017: NMC Case Report Journal
https://www.readbyqxmd.com/read/28728149/higher-rates-of-operative-delivery-and-maternal-and-neonatal-complications-in-persistent-occiput-posterior-position-with-a-large-head-circumference-a-retrospective-cohort-study
#14
Oren Yagel, Sarah M Cohen, Michal Lipschuetz, Tali Bdolah-Abram, Hagai Amsalem, Doron Kabiri, Simcha Yagel
INTRODUCTION: We investigated whether large head circumference (HC) combined with persistent occiput posterior (OP) position is associated with higher rates of operative delivery and obstetric and neonatal complications than OP deliveries without large HC or in occiput anterior (OA) position. MATERIALS AND METHODS: Term singleton deliveries in our centers from January 2010 to December 2014, delivered in cephalic OA (n = 41,038) or OP position (n = 1,740), were assessed...
July 21, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28720989/trapezius-perforator-flap-for-reconstruction-of-a-posterior-cervical-defect
#15
Ricardo Nascimento, Joana Costa, Ricardo Horta, Álvaro Silva
The use of free flaps is considered the "gold standard" for reconstruction of head and neck defects. Locoregional flaps allows a better aesthetic result compared to free flaps, whenever there's an external skin defect. However the use of free flaps is not always adequate in the presence of preoperative comorbidities or previous surgeries. Since the description of the trapezius myocutaneous flap in the 1980's, many authors have published the results of the applicability of this flap in head and neck salvage reconstructive surgery...
April 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28699402/the-management-of-episiotomy-technique-and-its-effect-on-pelvic-floor-muscles-during-a-malposition-childbirth
#16
Dulce A Oliveira, Marco P L Parente, Begoña Calvo, Teresa Mascarenhas, Renato M Natal Jorge
Vaginal childbirth is the leading cause of pelvic floor muscles injury, which contributes to pelvic floor dysfunction, being enhanced by fetal malposition. Therefore, the aim of the present study is to verify the influence of mediolateral episiotomies in the mechanics of the pelvic floor with the fetus in occiput posterior position when compared to the occiput anterior position. Numerical simulations of vaginal deliveries, with and without episiotomy, are performed based on the Finite Element Method. The biomechanical model includes the pelvic floor muscles, a surface to delimit the anterior region of the birth canal and a fetus...
August 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28685259/extremely-large-sinus-pericranii-with-involvement-of-the-torcular-and-associated-with-crouzon-s-syndrome
#17
Felipe H Sanders, Bryan A Edwards, Matthew Fusco, Rod J Oskouian, R Shane Tubbs, James M Johnston
INTRODUCTION: Sinus pericranii is a rare vascular malformation that connects the intracranial dural sinuses to the extracranial venous drainage system and is caused by either trauma or congenital defects. Although the majority of these vascular structures are due to trauma, some are congenital. CASE REPORT: Herein, we report a 5-month-old patient with a very large and fluctuating subcutaneous mass over the occiput and the diagnosis of Crouzon's syndrome. The child presented with a large midline mass that on imaging, connected to the underlying torcular and was diagnosed as a sinus pericranii...
July 6, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28610344/a-new-species-of-the-genus-burmagomphus-williamson-odonata-gomphidae-from-northern-thailand
#18
Noppadon Makbun
Burmagomphus chiangmaiensis sp. nov. (holotype: Ban Luang, Chom Thong, Chiang Mai province, Thailand, 890-900 m, 14 v 2012) is described and illustrated. It can be differentiated from its most similar congener, B. apricus from China, by shape of posterior hamulus, yellow trapezoid band on occiput, and larger size.
May 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28593385/tailor-made-management-of-thoracic-scoliosis-with-cervical-hyperextension-in-muscular-dystrophy
#19
A Angelliaume, L Harper, A Lalioui, A Delgove, Y Lefèvre
PURPOSE: We report the case of a 13-year-old boy managed for fixed cervical hyperextension due to congenital muscular dystrophy with partial merosin deficiency. He presented a right decompensated thoracic scoliosis (T6-L1 Cobb angle 72°) associated with cervical and lumbar lordosis. The spinal extension was accompanied by major flexion of the hip resulting in the trunk being bent forward. This posture caused daily severe back pain responsible for significant loss of quality of life. This led to the decision to perform surgery...
June 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28503467/medial-lemniscus-tract-lesion-after-high-voltage-electrical-injury-a-case-report
#20
Chul-Hyun Cho, Dong Gyu Lee
We present the case of a 33-year-old man who experienced a 10,000-V electrical shock when working with electrical wiring. He suffered third-degree burns on his scalp at the right occiput (entry wound) and on his left arm (exit would), and a second-degree burn on his left foot (exit wound). He presented with severe spasticity of both lower extremities, motor weakness with a Medical Research Council grade of 3, and sensory impairments below thoracic level 11 that included an inability to sense light touch and defects in proprioception...
April 2017: Annals of Rehabilitation Medicine
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