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Temporal bone fracture

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https://www.readbyqxmd.com/read/28713653/frail-phenotype-might-herald-bone-health-worsening-among-end-stage-renal-disease-patients
#1
Chia-Ter Chao, Jenq-Wen Huang, Ding-Cheng Chan
BACKGROUND: Frailty exhibits a high prevalence in end-stage renal disease (ESRD) patients and is associated with adverse health-related outcomes, including falls and fractures. Available studies do not address whether frailty is associated with temporal changes in BMD. We evaluated this issue by analyzing the follow-up dual energy X-ray absorptiometry (DXA) results in an ESRD cohort. METHODS: In 2015, we enrolled forty-three ESRD patients, divided into frail, pre-frail, and robust ones based on a validated simple FRAIL scale, all receiving DXA at baseline...
2017: PeerJ
https://www.readbyqxmd.com/read/28697349/styloid-process-fracture-associated-with-maxillofacial-trauma-incidence-distribution-and-management
#2
P K Tiwary, N K Sahoo, Ankur Thakral, Udayan Ranjan
PURPOSE: Fracture of the styloid process of the temporal bone has been infrequently reported. The present study evaluated the incidence, causes, distribution, and management of styloid process fracture in association with other maxillofacial fractures. MATERIALS AND METHODS: A prospective evaluation of patients with maxillofacial trauma over a period of 1 year was carried out and patients' characteristics, mode and distribution of injury, and length of styloid process were recorded...
June 23, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28693327/in-situ-examination-of-osteoblast-biomineralization-on-sulfonated-polystyrene-modified-substrates-using-fourier-transform-infrared-microspectroscopy
#3
Yizhi Meng, Meghan E Faillace, Kathryn Dorst, Samantha J Palmaccio, Lisa M Miller, Yi-Xian Qin
Osteoporosis is a skeletal disorder that is characterized by the loss of bone mineral density (BMD) resulting in increased risk of fracture. However, it has been shown that BMD is not the only indicator of fracture risk, as the strength of bone depends on a number of factors, including bone mass, architecture and material properties. Physiological mineral deposition requires the formation of a properly developed extracellular matrix (ECM), which recruits calcium and phosphate ions into the synthesis of apatite crystals...
July 10, 2017: Biointerphases
https://www.readbyqxmd.com/read/28684072/surgery-first-approach-in-orthognathic-surgery-psychological-and-biological-aspects-a-prospective-cohort-study
#4
Sebastian Zingler, Emad Hakim, Dominic Finke, Monika Brunner, Daniel Saure, Jürgen Hoffmann, Christopher J Lux, Ralf Erber, Robin Seeberger
INTRODUCTION: The aim of this pilot study was to investigate psychological and biological changes after application of a surgery-first orthognathic treatment approach. METHODS: A prospective cohort study of 9 patients (6 women and 3 men; mean age 26.7 years) suffering from skeletal Class II and III deformities was conducted. Skeletal changes from pre-to post-treatment were analyzed based on data acquired by use of cone-beam computed tomography (CBCT). Psychological changes were analyzed using the orthognathic quality of life (OQLQ) questionnaire, Sense of Coherence 29-item scale (SOC-29) and longitudinal day-to-day questionnaire...
August 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28676439/the-effect-of-stress-fracture-interventions-in-a-single-elite-infantry-training-unit-1983-2015
#5
Charles Milgrom, Aharon S Finestone
Stress fractures can be seen as an undesired byproduct of demanding physical training. The threshold value of stress that places an individual bone at high risk for stress fracture has not been identified. In a prospective study of stress fractures in 1983, a 31% incidence was found during demanding Israeli infantry basic training by bone scan criteria. Within a subgroup of these recruits, an elite infantry unit was found to have a 40% incidence. Since then and until 2015, eight additional induction companies of the same elite infantry unit were prospectively monitored for stress fractures during their basic training...
July 1, 2017: Bone
https://www.readbyqxmd.com/read/28647583/the-temporal-expression-of-adipokines-during-spinal-fusion
#6
Sohrab Virk, Alicia L Bertone, Hayam Hamaz Hussein, Jeffrey M Toth, Mari Kaido, Safdar Khan
BACKGROUND CONTEXT: Adipokines are secreted by white adipose tissue and have been associated with fracture healing. Our goal was to report the temporal expression of adipokines during spinal fusion in an established rabbit model. PURPOSE: Our goal was to report the temporal expression of adipokines during spinal fusion in an established rabbit model. STUDY DESIGN: Laboratory animal model METHODS: New Zealand white rabbits were assigned to either sham surgery (n=2), unilateral posterior spinal fusion (n=14) or bilateral posterior spinal fusion (n=14)...
June 21, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28639740/declining-rates-of-hip-fracture-in-end-stage-renal-disease-analysis-from-the-2003-2011-nationwide-inpatient-sample
#7
Sun Moon Kim, Sai Liu, Jin Long, Maria E Montez-Rath, Mary B Leonard, Glenn M Chertow
The incidence of hip fracture in patients with end-stage renal disease (ESRD) is considerably higher than that in the general age- and sex-matched population. Although medical therapy for chronic kidney disease mineral bone disorder (CKD-MBD) has changed considerably over the last decade, rates of hip fracture in the entire ESRD population have not been well-characterized. Herein, we evaluated temporal trends in rates of hip fracture, in-hospital mortality, and costs of associated hospital stay in ESRD. We identified hospitalizations for hip fracture from 2003 to 2011 using the Nationwide Inpatient Sample, a representative national database inclusive of all ages and payers...
June 22, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28631687/-acquired-atresia-and-stenosis-of-the-external-acoustic-meatus
#8
D S Kondratchikov, Kh M Diab, V S Korvyakov, L I Terekhina
Acquired atresia of the external acoustic meatus is a rare pathological condition characterized by obliteration of the medial part of the external acoustic canal by a soft fibrous plug. The present article presents an overview of a series of cases of acquired atresia and stenosis of the external acoustic meatus with the description of etiology, pathogenesis, and methods for the treatment of this condition. In the majority of the cases, atresia develops at the final stage of granulation external otitis with or without an accompanying dermatological pathology...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28623826/mechanical-characterization-via-nanoindentation-of-the-woven-bone-developed-during-bone-transport
#9
J Mora-Macías, A Pajares, P Miranda, J Domínguez, E Reina-Romo
Nanoindentation has been used successfully in the determination of the mechanical properties of bone. Its application in fracture healing provides information on the evolution of material properties of the woven bone during regeneration process. However, this technique has not been applied in assessing the mechanical properties of woven bone during distraction osteogenesis. Therefore, the aim of this work is to evaluate the spatial and temporal variations of the elastic modulus of the woven bone generated during the bone transport process...
June 1, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28551022/the-relationship-between-post-traumatic-ossicular-injuries-and-conductive-hearing-loss-a-3d-ct-study
#10
Olivier Maillot, Arnaud Attyé, Claire Boutet, Kamel Boubagra, Romain Perolat, Marion Zanolla, Sylvie Grand, Sébastien Schmerber, Alexandre Krainik
PURPOSE: After a trauma, the conductive ossicular chain may be disrupted by ossicular luxation or fracture. Recent developments in 3D-CT allow a better understanding of ossicular injuries. In this retrospective study, we compared patients with post-traumatic conductive hearing loss (CHL) with those referred without CHL to evaluate the relationship between ossicular injuries and CHL. We also assessed the added value of 3D reconstructions on 2D-CT scan to detect ossicular lesions in patients surgically managed...
May 24, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28523266/stimulating-fracture-healing-in-ischemic-environments-does-oxygen-direct-stem-cell-fate-during-fracture-healing
#11
REVIEW
Katherine R Miclau, Sloane A Brazina, Chelsea S Bahney, Kurt D Hankenson, Thomas K Hunt, Ralph S Marcucio, Theodore Miclau
Bone fractures represent an enormous societal and economic burden as one of the most prevalent causes of disability worldwide. Each year, nearly 15 million people are affected by fractures in the United States alone. Data indicate that the blood supply is critical for fracture healing; as data indicate that concomitant bone and vascular injury are major risk factors for non-union. However, the various role(s) that the vasculature plays remains speculative. Fracture stabilization dictates stem cell fate choices during repair...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28472361/energy-metabolism-of-the-osteoblast-implications-for-osteoporosis
#12
Wen-Chih Lee, Anyonya R Guntur, Fanxin Long, Clifford J Rosen
Osteoblasts, the bone-forming cells of the remodeling unit, are essential for growth and maintenance of the skeleton. Clinical disorders of substrate availability (e.g., diabetes mellitus, anorexia nervosa, and aging) cause osteoblast dysfunction, ultimately leading to skeletal fragility and osteoporotic fractures. Conversely, anabolic treatments for osteoporosis enhance the work of the osteoblast by altering osteoblast metabolism. Emerging evidence supports glycolysis as the major metabolic pathway to meet ATP demand during osteoblast differentiation...
June 1, 2017: Endocrine Reviews
https://www.readbyqxmd.com/read/28448419/venous-sinus-thrombosis-in-blunt-trauma-incidence-and-risk-factors
#13
Shira E Slasky, Yayone Rivaud, Matthew Suberlak, Oluwole Tairu, Adam D Fox, Pamela Ohman-Strickland, Esther Bilinisky
PURPOSE: The aim of our study was to determine the incidence and risk factors of dural venous sinus thrombosis and epidural hemorrhage in the setting of a blunt trauma causing a calvarial fracture crossing a dural venous sinus. METHODS: A retrospective review of 472 blunt trauma patients with calvarial fracture crossing a dural venous sinus was performed. Two hundred ten patients who underwent computed tomography venography were identified and evaluated for the presence of dural venous sinus thrombosis and/or epidural hemorrhage...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28447646/a-130-000-year-old-archaeological-site-in-southern-california-usa
#14
Steven R Holen, Thomas A Deméré, Daniel C Fisher, Richard Fullagar, James B Paces, George T Jefferson, Jared M Beeton, Richard A Cerutti, Adam N Rountrey, Lawrence Vescera, Kathleen A Holen
The earliest dispersal of humans into North America is a contentious subject, and proposed early sites are required to meet the following criteria for acceptance: (1) archaeological evidence is found in a clearly defined and undisturbed geologic context; (2) age is determined by reliable radiometric dating; (3) multiple lines of evidence from interdisciplinary studies provide consistent results; and (4) unquestionable artefacts are found in primary context. Here we describe the Cerutti Mastodon (CM) site, an archaeological site from the early late Pleistocene epoch, where in situ hammerstones and stone anvils occur in spatio-temporal association with fragmentary remains of a single mastodon (Mammut americanum)...
April 26, 2017: Nature
https://www.readbyqxmd.com/read/28414141/temporal-role-of-macrophages-in-cancellous-bone-healing
#15
Olof Helge Sandberg, Love Tätting, Magnus Erik Bernhardsson, Per Aspenberg
Macrophages are important phagocytosing and cytokine producing cells with effects on fracture healing. We used clodronate-containing liposomes to reduce the number of macrophages, in order to study their role in the early phases of cancellous bone healing. Holes were drilled bilaterally into the cancellous bone of the proximal metaphysis of the tibia of 60 mice. A screw was inserted in the hole in the right tibia. The day of surgery was day 0. Clodronate-containing liposomes were injected intraperitoneally as a single injection either day -4 or -1 (before surgery) or day 1 or 3 (after surgery)...
April 14, 2017: Bone
https://www.readbyqxmd.com/read/28394900/acute-development-of-cortical-porosity-and-endosteal-na%C3%A3-ve-bone-formation-from-the-daily-but-not-weekly-short-term-administration-of-pth-in-rabbit
#16
Hiroshi Yamane, Aya Takakura, Yukari Shimadzu, Toshiyuki Kodama, Ji-Won Lee, Yukihiro Isogai, Toshinori Ishizuya, Ryoko Takao-Kawabata, Tadahiro Iimura
Teriparatide [human parathyroid hormone (1-34)], which exerts an anabolic effect on bone, is used for the treatment of osteoporosis in patients who are at a high risk for fracture. That the once-daily administration of teriparatide causes an increase in cortical porosity in animal models and clinical studies has been a matter of concern. However, it is not well documented that the frequency of administration and/or the total dose of teriparatide affect the cortical porosity. The present study developed 4 teriparatide regimens [20 μg/kg/day (D20), 40 μg/kg/day (D40), 140 μg/kg/week (W140) and 280 μg/kg/week (W280)] in the rabbit as a model animal with a well-developed Haversian system and osteons...
2017: PloS One
https://www.readbyqxmd.com/read/28382185/isolated-fracture-of-lateral-pterygoid-plate-by-penetrating-foreign-body-a-rarity-indeed
#17
Mukesh Surya, Pawan Soni, Ramesh Bharti, Ira Jamwal
BACKGROUND: Fractures of mid-face were first described by Le Fort and are classified into three categories - Le Fort I, Le Fort II and Le Fort III. The pterygoid processes of the sphenoid bone are fractured in all the three categories of Le Fort fractures as the sphenoid bone connects the cranium vault to the facial bones. Fractures of the pterygoid processes without associated Le Fort fractures are rare and are usually associated with fractures of the mandible, temporal bone or other facial bones...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28374140/revisiting-the-indirect-signs-of-a-temporal-bone-fracture-air-air-everywhere
#18
Adam C Ulano, Srinivasan Vedantham, Deepak Takhtani
BACKGROUND AND PURPOSE: The standard head CT protocol makes detection of a temporal bone fracture difficult. The purposes of our study are to revisit the finding of air in various locations around the temporal bone as an indirect sign of fracture and determine if findings could predict fracture pattern. MATERIALS AND METHODS: We searched the radiology reports for the keyword "temporal bone fracture." We recorded the presence of air in multiple locations around the temporal bone and pneumocephalus, opacification of the mastoid air cells or the middle ear cavity, and dominant fracture pattern...
April 3, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28349533/subtotal-petrosectomy-surgical-technique-indications-outcomes-and-comprehensive-review-of-literature
#19
Sampath Chandra Prasad, Valeria Roustan, Gianluca Piras, Antonio Caruso, Lorenzo Lauda, Mario Sanna
OBJECTIVES/HYPOTHESIS: To describe the technique of subtotal petrosectomy (STP), to analyze the outcomes, and to review the literature STUDY DESIGN: A retrospective review. METHODS: Four hundred sixty cases of STP performed for various indications were included in the study, which was conducted at a quaternary referral center for otology and skull base surgery. Surgical and audiological parameters, and complications were evaluated. Our results were compared with the existing literature on the subject...
March 27, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28320600/tympanometry-and-isolated-fracture-of-the-stapes
#20
C Aussedat, C Bobiller, K Gaillot, E Lescanne, D Bakhos
INTRODUCTION: Temporal bone fractures are frequently associated with ossicular dislocations or fractures, most commonly involving the incus. To our knowledge, isolated fracture of the posterior crus of the stapes has not been previously reported. CASE REPORT: A 20-year-old man consulted for persistent left hypoacusis several months after a head injury. Initial computed tomography of the temporal bone showed a simple temporal bone fracture with no other associated abnormalities...
March 17, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
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