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radio induced fracture

N Bonnevialle
Radial head fractures are fairly common (20% of all traumatic elbow injuries). Non-operative treatment is indicated in non-displaced fractures, and direct stable internal fixation allowing early elbow mobilisation in most other cases. For severely comminuted fractures precluding stable fixation, replacement of the radial head was introduced in the 1970s as a better alternative to simple radial head resection, which can induce instability of the elbow and/or forearm, most notably in patients who have complex fractures with concomitant lesions to other structures...
February 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
Kristen L Kiehl, William H Curry, Brian D Stemper, Gerald Eckardt, Jamie L Basiden, Dennis J Maiman, Narayan Yoganandan, Barry S Shender
Lumbar spine endplate fracture is not easily detectible using medical imaging, but can lead to pain symptoms. Understanding endplate fracture mechanics can lead to more informed clinical diagnosis and more appropriate safety enhancements for civilian and military vehicles. Lumbar motion segments obtained from PMHS were prepared using two methods. Group 1 (n=6) was potted preserving the natural segmental lordosis while Group 2 (n=4) removed the curvature. Specimens were compressed at 0.5 mm/sec until fracture, observed via real-time fluoroscopy video as radio-opaque dye transferred from the intervertebral disc nucleus into the vertebral body...
2014: Biomedical Sciences Instrumentation
Luc De Smet, Filip Verhaegen, Ilse Degreef
Introduction Malunions of the distal radius often induce carpal malalignment. Two different types can be distinguished: an adaptive midcarpal malalignment (so-called CIA wrist: carpal instability, adaptive) and a radiocarpal malalignment (dorsal translation of the whole carpus). The effect of distal radial osteotomy on the carpal alignment has hardly been studied. Material and Methods 31 wrists in 31 patients (mean age 44 years) with malunion of the distal radius after a Colles fracture were treated with a corrective osteotomy...
August 2014: Journal of Wrist Surgery
Katrin Eichler, Stephan Zangos, Martin G Mack, Ingo Marzi, Thomas J Vogl
Our goal was to assess the technical results in patients who underwent long-axis sacroplasty for the treatment of sacral insufficiency fractures (SIF) by radiofrequency-induced high-viscosity bone cement augmentation. Twelve patients with bilateral sacral fractures were treated by augmentation with radiofrequency-activated, high-viscosity polymethylmethacrylate (PMMA) bone cement under local anesthesia. CT-guided sacroplasty was performed by using a long-axis approach through a single entry point. Thirty-six vertebrae were treated in 12 sessions under a combination of CT and fluoroscopic guidance using a bilateral access and a cavity-creating osteotome prior to remote-controlled, hydraulically driven cement injection...
April 2014: Skeletal Radiology
A Chaniotis
AIM: To report the use of MTA/blood mixture for the induction of hard tissue healing of multiple horizontal root fractures in a maxillary incisor. SUMMARY: An 18-year-old male patient was referred after suffering trauma to the anterior maxilla. Radiographic evaluation revealed multiple horizontal fractures in the middle and cervical third of his maxillary right central incisor. Clinical evaluation revealed third grade mobility of the coronal segment. The patient's accompanying radiographs revealed that root canal treatment of all segments had been previously initiated and both segments had been rendered pulpless...
October 2014: International Endodontic Journal
Ryan N Chan, Brian R Stoner, Jeffrey Y Thompson, Ronald O Scattergood, Jeffrey R Piascik
OBJECTIVES: The aim of this study was to evaluate strengthening mechanisms of yttria-stabilized zirconia (YSZ) thin film coatings as a viable method for improving fracture toughness of all-ceramic dental restorations. METHODS: Bars (2mm×2mm×15mm, n=12) were cut from porcelain (ProCAD, Ivoclar-Vivadent) blocks and wet-polished through 1200-grit using SiC abrasive. A Vickers indenter was used to induce flaws with controlled size and geometry. Depositions were performed via radio frequency magnetron sputtering (5mT, 25°C, 30:1 Ar/O2 gas ratio) with varying powers of substrate bias...
August 2013: Dental Materials: Official Publication of the Academy of Dental Materials
H Vinz, O-A Festge, J Neu
BACKGROUND: Statistics of the Arbitration Office of the North German Medical Boards for extrajudicial claim resolution show that nearly 30 % of all panel proceedings confirm medical malpractice. In proceedings concerning fractures in children the percentage rises to 63 % with significant differences in various fracture localisations. METHODS: Between 2000 and 2011 the Arbitration Office dealt with 272 panel proceedings regarding the fracture treatment in children...
December 2012: Zeitschrift Für Orthopädie und Unfallchirurgie
Patrick R Schmidlin
A patient presented with chronic periapical periodontitis on tooth 45. The root canal was re-treated and a wide apical perforation was closed with MTA® as an apical plug. At reevaluation six month later, the tooth presented with increased mobility, bleeding on probing and probing pocket depths of 9 mm. Despite good periapical healing radio graphically, the tooth showed signs of localized marginal bone loss that was diagnosed as being due to a cemental fracture. The tooth was splinted, a muco-periostal flap was raised and the fragment of cementum was removed...
2012: Open Dentistry Journal
J Aberg, H B Henriksson, H Engqvist, A Palmquist, C Brantsing, A Lindahl, P Thomsen, H Brisby
Calcium phosphate cements (CPC) are used as bone void filler in various orthopedic indications; however, there are some major drawbacks regarding mixing, transfer, and injection of traditional CPC. By using glycerol as mixing liquid, a premixed calcium phosphate cement (pCPC), some of these difficulties can be overcome. In the treatment of vertebral fractures the handling characteristics need to be excellent including a high radio-opacity for optimal control during injection. The aim of this study is to evaluate a radiopaque pCPC regarding its resorption behavior and biocompatibility in vivo...
May 2012: Journal of Biomedical Materials Research. Part A
Masahiko Koizumi
Almost all bone metastases of cancer with pain are indicated to radiotherapy (RT) . Pathological fracture, impending fracture at lower extremities and radio-resistant tumor should receive preceding surgery. RT is set up to fix lesional bone and consists of 30Gy÷10fr÷2w to rectangular fields opposed anteroposteriorly in general. RT-field includes gross tumor volume plus clinically extent of tumor added set-up error. Pain relief is obtained around 80 to 90%. Re-irradiation may be also effective even with small dose...
March 2011: Clinical Calcium
O Alexa, I Popia
UNLABELLED: Internal fixation by pinning is one of the most used methods of surgical treatment in fractures of the distal extremity of the radius. As in stable fractures a styloid pinning is satisfactory, in unstable fractures however we must resort to different patterns of pin insertion, in order to effectively prevent the secondary displacement of the fractured fragments. The elastic pinning described by Py and Desmanet is one of the possibilities of inserting the pins. The principle of this method is to use the bending-induced tension in the pins to counteract the postero-lateral displacing forces...
October 2009: Revista Medico-chirurgicală̆ a Societă̆ţ̜ii de Medici ş̧i Naturaliş̧ti Din Iaş̧i
Robert M Kellman, Christopher Schmidt
OBJECTIVES/HYPOTHESIS: The purpose of this study is to test the theory that the paranasal sinuses serve a protective function for the central nervous system and special sensory organs. STUDY DESIGN: Nonrandomized experimental trauma study with fresh human cadavers. METHODS: Fresh human cadaver heads were obtained and the sinuses on one side underwent endoscopic endonasal sinus surgery and were then filled with radio-opaque bone cement to obliterate them...
September 2009: Laryngoscope
Hege Edvardsen, Toril Tefre, Laila Jansen, Phuong Vu, Bruce G Haffty, Sophie D Fosså, Vessela N Kristensen, Anne-Lise Børresen-Dale
BACKGROUND: The ATM protein is activated as a result of ionizing radiation, and genetic variants of the ATM gene may therefore affect the level of radiation-induced damage. Individuals heterozygous for ATM mutations have been reported to have an increased risk of malignancy, especially breast cancer. MATERIALS AND METHODS: Norwegian breast cancer patients (272) treated with radiation (252 of which were evaluated for radiation-induced adverse side effects), 95 Norwegian women with no known history of cancer and 95 American breast cancer patients treated with radiation (44 of which developed ipsilateral breast tumour recurrence, IBTR) were screened for sequence variations in all exons of the ATM gene as well as known intronic variants by denaturating high performance liquid chromatography (dHPLC) followed by sequencing to determine the nature of the variant...
2007: Radiation Oncology
Jörn-Uwe Piesold, Bilal Al-Nawas, Knut A Grötz
For several decades bisphosphonates have been used to reduce skeletal related events in patients with both osteoporosis or bone metastases. Under long term application, besides the known therapy side effects, a new clinical picture has been described within the last few years. This is osteonecrosis of the jaws, which is characterized by its difficulty in treatment. Besides exposed jaw bone, the start of the disease usually lacks any symptoms. The typical clinical symptoms then are foetor ex ore, swelling, exsudation, loosening of teeth, pain or paresthesia...
September 2006: Mund-, Kiefer- und Gesichtschirurgie: MKG
Li-bo Liang, Ye-wei Ma, Qing-zheng Zhao, Xiao-shan Zhou, Jun Yang, Yan-chun Li, Yu-ying Liu, Zheng Wang, Yang-pei Zhagn
BACKGROUND & OBJECTIVE: It is an effective way to induce radio-tolerant gene into hematopoietic cells in bone marrow for overcoming the suppression of radiotherapy on hematopoietic system. However, this also increases the radiation tolerance of tumor cells. This study was designed to investigate a method to specifically protect bone marrow cell from being damaged by radiation, along without increasing resistance of tumor cell to radiation. METHODS: The retrovirus vector of manganese superoxide dismutase (MnSOD) gene regulated by aminopeptidase N (APN) bone marrow-specific gene promoter was constructed and induced into myeloblastic KG1a and cancer cell BEL7402...
September 2002: Ai Zheng, Aizheng, Chinese Journal of Cancer
Chernet G Chirstos
A total of 125 patients with forearm (radio-ulnar) bone compound fractures resulting from missile injuries were examined 8 to 16 weeks after the time of injury with the objective of finding out the rate and causes of non-union. Initial management in each case was circular POP with windows for wound care or posterior slabs made of POP, Cramer-wire, or wood at random. Out of these, 22 (17.5%) patients had non-union. All were male, mean age 26 years, in good nutritional state and no underlying chronic illnesses found on routine examination...
January 2002: Ethiopian Medical Journal
M Diociaiuti, F Bordi, L Gataleta, G Baldo, P Crateri, L Paoletti
The interaction of aerosil particles with human erythrocytes was investigated by electron microscopy methods complemented with hemolysis and radio wave dielectric spectroscopy to elucidate the extent of morphological and functional modification induced by aerosil surface. Scanning electron microscopy and freeze-fracturing techniques were used to follow morphological and ultrastructural modifications and hemolysis tests and radio wave dielectric spectroscopy to monitor the membrane damage. All experimental results indicate that there is an effect depending on both silica concentration and incubation time...
April 1999: Environmental Research
F Fulfaro, A Casuccio, C Ticozzi, C Ripamonti
Metastatic bone disease is a frequent cause of morbidity in advanced cancer patients with a subsequent high incidence of skeletal complications (fractures, hypercalcemia, spinal cord compression) and severe pain. The osteolytic process is mainly characterized by an osteoclastic activity of bone resorption and inflammatory activity provoked by various cytokines and prostaglandins. Bisphosphonates represent a new class of drugs with inhibitory activity on bone resorption and on inflammatory processes which revealed themselves to be efficacious in a series of clinical conditions such as tumour-induced hypercalcemia, Paget's disease, osteoporosis and metastatic bone disease...
December 1998: Pain
O Ramuz, J Bourhis, F Mornex
The physiopathology of radiation-induced bone damage is no completely elucidated. Ionizing radiation may induce an inhibition or an impairment of growing bone. This fact is of particular importance in children, and represents one of the most important dose-limiting factors in the radiotherapeutic management of children with malignant diseases. Scoliosis, epiphyseal slippage, avascular necrosis, abnormalities of craniofacial growth may be observed after radiation. Child's age at the time of treatment, location of irradiated bone and irradiation characteristics may influence the radiation-related observed effects...
1997: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
J Aaseth, U Syversen, O Førre
Based upon recent research, bisphosphonates have now attained a ranking as the first alternative to oestrogen replacement therapy in women with postmenopausal osteoporosis. The efficacy of these drugs has been clearly documented in recent years, particularly as a result of extensive clinical trials with alendronate. The studies have also confirmed the favourable risk/benefit ratio. The specific affinity of bisphosphonates for bone tissue has been recognized for many years, and explains the diagnostic use of radio-labelled species in skeleton scintigraphy...
March 10, 1998: Tidsskrift for Den Norske Lægeforening: Tidsskrift for Praktisk Medicin, Ny Række
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