scholarly journals Matta’s criteria may be useful for evaluating and predicting the reduction quality of simultaneous acetabular and ipsilateral pelvic ring fractures

2021 ◽  
Author(s):  
Yi-Hsun Yu ◽  
Chang-Heng Liu ◽  
Yung-Heng Hsu ◽  
Ying-Chao Chou ◽  
I-Jung Chen ◽  
...  
Keyword(s):  
Pelvic Ring ◽  
Univariate Analysis ◽  
Acetabular Fractures ◽  
X Rays ◽  
X Ray ◽  
Pelvic Ring Fractures ◽  
Potential Factors ◽  
Fracture Types ◽  
Similar Risk

Abstract Background Although the incidences, fracture types, and radiological outcomes for simultaneous ipsilateral pelvic ring and acetabular fractures were reported, there have been no reports on factors that may affect reduction quality of an acetabular fracture. Here, we evaluate the radiological outcomes of patients treated for simultaneous ipsilateral pelvic and acetabular fractures and analyze the factors that affect the reduction quality of acetabular fractures.Methods We conducted a retrospective review of patients treated for simultaneous ipsilateral pelvic ring and acetabular fractures between 2016 to 2020. Potential factors were analyzed to predict inadequate reduction of the acetabular fractures.Results Data from 27 hips of 26 patients were collected. AO B2.2 and anterior columnar fractures were the most common fracture types of the pelvic ring and acetabular fractures, respectively. Univariate analysis revealed that Matta’s criteria for pelvic ring fracture may be useful for predicting fair to poor reduction quality of acetabular fractures on X-rays. Furthermore, associated fractures identified by Letournel’s classification system on CT scan may be factors for predicting greater step-offs.Conclusions The associated fractures identified via Letournel’s classification may be factors that contribute to inadequate reduction for such fractures. Matta’s criteria for pelvic ring fractures may also be useful for predicting the similar risk of inadequate reduction of the acetabulum on X-ray scans. These findings may be applied intraoperatively by fluoroscopy before the beginning of osteosynthesis for acetabular fractures.

scholarly journals Matta’s criteria may be useful for evaluating and predicting the reduction quality of simultaneous acetabular and ipsilateral pelvic ring fractures

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yi-Hsun Yu ◽  
Chang-Heng Liu ◽  
Yung-Heng Hsu ◽  
Ying-Chao Chou ◽  
I-Jung Chen ◽  
...  
Keyword(s):  
Acetabular Fracture ◽  
Pelvic Ring ◽  
Univariate Analysis ◽  
Poor Quality ◽  
Fracture Reduction ◽  
Acetabular Fractures ◽  
X Rays ◽  
X Ray ◽  
Pelvic Ring Fractures

Abstract Background Although the incidence, types, and radiological outcomes of simultaneous ipsilateral pelvic ring and acetabular fractures have been reported, there have been no reports on factors that may affect the quality of acetabular fracture reduction. Here, we evaluate the radiological outcomes of patients treated for simultaneous ipsilateral pelvic and acetabular fractures and analyze the factors that affect the quality of acetabular fracture reduction. Methods We conducted a retrospective review of patients treated for simultaneous ipsilateral pelvic ring and acetabular fractures between 2016 and 2020. Factors that may predict inadequate reduction of the acetabular fracture were analyzed. Results Data from 27 hips of 26 patients were collected. AO B2.2 and anterior columnar fractures were the most common types of pelvic ring and acetabular fractures, respectively. Univariate analysis revealed that Matta’s criteria for pelvic ring fracture may be useful for predicting fair to poor quality of acetabular fracture reduction on X-rays. Furthermore, associated fractures identified by Letournel’s classification system on computed tomography may be predictive of greater step-offs. Conclusions Associated fractures identified via Letournel’s classification may contribute to inadequate reduction of acetabular fractures. Matta’s criteria for pelvic ring fractures may also be useful for predicting the risk of inadequate reduction of the acetabulum on X-ray scans. These findings may be assessed intraoperatively by fluoroscopy before beginning osteosynthesis for acetabular fractures.

scholarly journals Исследование этапов превращения кремния в карбид кремния в процессе атомного замещения методами полного внешнего отражения рентгеновских лучей и рентгеновской дифрактомерии

2022 ◽  
Vol 64 (3) ◽  
pp. 326
Author(s):  
С.А. Кукушкин ◽  
А.В. Осипов ◽  
Е.В. Осипова ◽  
В.М. Стожаров
Keyword(s):  
Structural Quality ◽  
Total External Reflection ◽  
X Rays ◽  
Reflection Method ◽  
X Ray Diffraction ◽  
Modified Technique ◽  
Substitution Method ◽  
X Ray ◽  
Sic Films

X-ray diffraction and total external reflection of X-rays (X-ray reflectometry) methods were used to study the successive stages of synthesis of epitaxial SiC films on Si (100) X-ray diffraction and total external X-ray reflection (XRD) methods were used to study successive stages of synthesis of epitaxial SiC films on Si (100) surfaces, (110) and (111) surfaces by the atom substitution method. The data on the transformation evolution of (100) surfaces were studied, (110) and (111) Si, into SiC surfaces. A comparative analysis of the X-ray structural quality of the SiC layers grown on Si by the atom substitution method with the quality of SiC layers grown by Advanced Epi by the standard CVD method. A modified technique for the total outer X-ray reflection method, based on measurements of the intensity of the reflected X-rays using a special parabolic mirror. It is shown that the method of total external reflection method makes it possible to obtain important information about the degree of surface roughness of SiC layers, the evolution of their crystal structure and plasmon energy in the process of Si to SiC conversion.

scholarly journals Assessment of aerobic bacteria killing activity of low energry X-rays in potatoes

2021 ◽  
Vol 5 (3) ◽  
pp. first
Author(s):  
Nguyễn An Sơn ◽  
Hai Van Cao ◽  
Trieu Ngoc Le ◽  
Giang Van Nguyen ◽  
Ha Thi Nguyet Nguyen ◽  
...  
Keyword(s):  
Nutritional Value ◽  
Agricultural Products ◽  
Food Irradiation ◽  
Aerobic Bacteria ◽  
X Rays ◽  
X Ray ◽  
Long Time ◽  
Bacteria Killing ◽  
Cover Up

Potato is one of popular agricultural products grown and used in the world with high effective economic and nutritional value. In potatoes, there are always have some harmful bacteria species due to the sources of exposure from the seed, soil as well as the post-harvest environment which make deceasing the quality and quantity of potatoes. Usually, irradiation with gamma isotope sources is used in food irradiation, however, the disadvantage of the gamma source is the safe shielding reason even without the use of irradiation. Nowadays, X-ray irradiation in food is one of the methods interest to storage in long time. The first advantage of X-ray irradiation is that most of aerobic bacteria in food is killed, but does it not change the quality of the potato. Moreever, the advantage of an X-ray generator is that it does not have to cover up radiation when not in use. In this study, we have used low energy X-rays emitted from X-ray generator MBR-1618R-BE (Hitachi -Japan) to study the ability to kill aerobic bacteria in potatoes grown in Da Lat. After preparation, potato samples were irradiated at doses ranging from 50 Gy to 5000 Gy. The irradiated samples were homogenized and inoculated on Nutrient Agar and incubated at 370C in an incubator to check the changes of aerobic bacteria. The research showed that the number of aerobic bacteria decreased dramatically to a dose of 1000 Gy (the aerobic bacteria was only less than 0,6%), despite a sharp increase in the dose of irradiation, this number decreased a little. The results also showed that D10 dose was 471,34 Gy.

scholarly journals The prevalance of femoroacetabular impingement findings on radiological survey of the emergeny service patients with trauma

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0006
Author(s):  
Gökhan Polat ◽  
Koray Şahin ◽  
Ufuk Arzu ◽  
Mehmet Aşık
Keyword(s):  
Emergency Service ◽  
Pelvic Ring ◽  
Adult Population ◽  
Alpha Angle ◽  
Symphysis Pubis ◽  
Lower Limbs ◽  
Female Group ◽  
X Rays ◽  
Pelvic Ring Fractures ◽  
Asymptomatic Stage

Femoroacetabular impingemet (FAI) is a disease causing hip pain in young-adult population and can be diagnosed frequently on asymptomatic stage. The European studies on this subject show that 20-25% of the population actually has asymptomatic FAI. Actually, there is no study in Turkey on this topic. The purpose of our study is to determine the prevalance of FAI on the X-rays of the patients who applied to the emergency service with trauma. Materials-Methods: Patients applied between September 2015 and January 2016 aged 18-65 and who has pelvis AP and frog leg X-rays were included. Pelvic graphs on which both iliac crests and proximal femurs are seen, the X-ray tube is centralised to the symphysis pubis and the obturator foramens are symmetrical were included. The graphs with fractures or ligamentous injuries affecting the pelvic ring, fractures on long bones of the lower limbs, arthrosis on coxofemoral joint and findings of previous pelvic and hip surgery were excluded. Totally 3487 patients were evaluated and 528 of them were included. Alpha, lateral central edge (LCE), Tönnis and collodiaphyseal angle were measured. The morphological anomalies (FAI, dysplasia) were noted. The measured alpha angle value above 55° graphs were accepted as CAM type; Tönnis angle below 4° angle or LCE angle above 39° were accepted as Pincer type impingement. The graphs with LCE angle below 25° or with Tönnis angle above 10° were considered as dysplasia. Results: The average age of the 528 included patients was 43,38. 323 were female and 205 were male. We determined 15,5% CAM, 11,1% Pincer and 4,7% combined type FAI in these 528 patients.The ratios were noted in female group, 4,6% CAM, 13,3% Pincer and 1,5% combined type; in male group 32,7% CAM, 7,8% Pincer 9,8% combined type. Average alpha angle on pelvis AP graphs was 48,9° on right and 47,8° on left side. Average alpha angle on pelvis frog leg graphs was 51,7° on right, 49,8° on left side. Average LCE angle was 32,9° on right and 34,7° on left side. Average Tönnis angle was 6,7° for right and 5,8° for left side. SPSS.21 were used to analyse the data. Discussion: FAI can be seen in population asymptomatically with a seriously high rates. In our study, we evaluated the asypmtomatic patients with trauma applying to the emergency service and we found radiological FAI findings rate 19,5% in females and 50,2% in males.

Pelvic Fractures

1994 ◽  
Vol 35 (5) ◽  
pp. 420-425 ◽  
Author(s):  
J. Albrechtsen ◽  
J. Hede ◽  
A. G. Jurik
Keyword(s):  
Femoral Head ◽  
Pelvic Ring ◽  
Posterior Part ◽  
Conventional Radiography ◽  
Pelvic Fractures ◽  
Acetabular Fractures ◽  
Pelvic Ring Fractures

Sixty-two patients with pelvic fractures were evaluated by conventional radiography and CT. A correct pathoanatomic classification of the fractures was most often obtained by conventional radiography, but CT added information regarding acetabular fractures and involvement of the posterior part of the pelvic ring. Besides, CT was essential in the detection of intraarticular fragments and lesions of the femoral head. Classification of pelvic ring fractures by the pattern of traumatic forces was easily obtainable by conventional radiography, but often difficult to achieve by CT.

scholarly journals Fixation of Pelvic-Acetabular Fractures Using a Midline-Modified Stoppa Approach: Clinical and Operative Outcomes

2018 ◽  
Vol 24 (1) ◽  
pp. 18-24
Author(s):  
Kenneth Kin-yan Chan ◽  
King-him Chui ◽  
Ka-chun Ip ◽  
Kin-bong Lee ◽  
Wilson Li
Keyword(s):  
Complication Rate ◽  
Injury Severity ◽  
Pelvic Ring ◽  
Functional Results ◽  
Bimodal Distribution ◽  
Harris Hip Score ◽  
Acetabular Fractures ◽  
Pelvic Ring Fractures ◽  
Stoppa Approach ◽  
Polytrauma Patients

Background/Purpose This served as the first report from our locality to evaluate the modified Stoppa approach, via a low-midline wound, for treating pelvic–acetabular fractures. Methods A total of 17 polytrauma patients with pelvic and/or acetabular fractures were consecutively treated using the modified Stoppa approach. They were followed up for at least 1 year postoperatively for radiographic and clinical assessments, which included the Modified Merle d'Aubigne Score, Harris Hip Score, and pain visual analogue scale. Results Among the 17 patients, 11 had pelvic ring fractures, two had isolated acetabular fractures, and four had a combination of both. Excellent and anatomical reduction was achieved in 73.3% of pelvic fractures and 71.4% of acetabular fractures. Functional outcomes simulated a bimodal distribution. Age of patient and Injury Severity Score were significant predictors for functional results, whereas fracture characteristics and quality of reduction were not correlated with clinical outcomes in this series. We experienced a low complication rate. Conclusion Excellent exposure for fracture reduction and fixation with low complication rate was achieved with the modified Stoppa approach. We were encouraged by the results of this preliminary series for treating pelvic–acetabular fractures in polytrauma patients.

scholarly journals What Are Predictors for Patients’ Quality of Life After Pelvic Ring Fractures?

2013 ◽  
Vol 471 (9) ◽  
pp. 2841-2845 ◽  
Author(s):  
Joerg H. Holstein ◽  
Antonius Pizanis ◽  
Daniel Köhler ◽  
Tim Pohlemann
Keyword(s):  
Quality Of Life ◽  
Pelvic Ring ◽  
Pelvic Ring Fractures

scholarly journals QUALITY CONTROL X RAYS MAMMOGRAPHY IN THE EFFORT MITIGATION INCREASING NUMBER OF CANCER PATIENTS

2017 ◽  
Vol 17 (1) ◽  
pp. 45
Author(s):  
Rini Safitri ◽  
Evi Yufita
Keyword(s):  
Breast Cancer ◽  
Quality Control ◽  
Early Stage ◽  
Input Voltage ◽  
Test Subject ◽  
X Rays ◽  
Radiographic Image ◽  
X Ray ◽  
Radiation Output

Abstract. Early detection of breast cancer is the first step in prevention that can be done by women, therefore when one is diagnosed with breast cancer, the appropriate treatment can be performed quickly and accurately. Early diagnosis of breast cancer can be a way of mitigation in preventing breast cancer through the use of mammography. Bureau of Radiology as said by The Joint Commission on Accreditation of Hospitals (JHCA) stated that one of the responsibilities of the radiology unit is to control the quality of service which aims to minimize the radiographic image repetition factor; as well as maximizes the quality of radiographic image. Quality control tests are an effort that is needed on the mammography X-ray diagnostics tools. This is done to maintain the quality of expected output. The parameters that are included within the radiation output are the magnitude of current and the voltage of tube that are produced; therefore they remained constant and correspond to the recommended standard. Bureau of Radiological Health, as said by JHCA mentioned that to control the quality of image which will minimize the radiographic image repetition and maximizes the quality of radiographic image. Therefore the radiation output will not be dangerous later. The early stage of the quality control test on the machine was conducted by setting all the filtrations which were placed to capture the x-ray on the x-ray plane tube with minimum value. Then, ionization chamber is placed on the test subject points; right after that the distance between it to the radiation source is noted. The x-ray film is place on a film on the compression table of the patient and the distance between film and the focus point is noted. This is then exposed using a target filter Mo/Mo by setting the current as well as variation the voltage and time. The standard voltage measurements are 20-33kVp. This data is from the observations of time exposure; the output value is then noted. The above procedure is conducted from the minimum voltage to the maximum voltage. The output ray is measured for each voltage. The same procedure is conducted to the target filter Mo/RH. The results obtained are that the greater the input voltage and current will subsequently produce greater doses, therefore the exposure has exceeded the standard limit 0.1 mHy with longer exposure time. The HVL density thickness on the mammography X-ray machine determined the quality of the beam and the doses of x-ray exposure on the mammography machine. The output stability of x-ray beam exposure in the mammography machine mode Mo/Mo still fulfill the standard which is the value of 69% Keywords: Quality Control, Sinar-X, mammography, Mp/Mo, Mo/RH

scholarly journals Lack of In-Brace X-Rays in Compliant AIS Patients Wearing Full-Time TLSO Braces Associates with Failure

2021 ◽  
Author(s):  
Isabel Alvarez ◽  
Kiley Poppino ◽  
Lori Karol ◽  
Amy L McIntosh
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Successful Treatment ◽  
Univariate Analysis ◽  
Full Time ◽  
X Rays ◽  
Skeletally Immature ◽  
X Ray ◽  
Total Treatment ◽  
Registration Date

Abstract BackgroundIn-brace correction and brace compliance with Thoraco-Lumbo-Sacral Orthotic (TLSO) braces are associated with successful treatment of Adolescent Idiopathic Scoliosis (AIS). This paper compares patients who had consistent radiographic documentation of in-brace correction to those who did not.MethodsAll skeletally immature (Risser 0–2) patients were treated for AIS (25°-45°) with full-time TLSO braces that had compliance temperature monitors. All patients wore their braces at least 12 hours a day. Brace failure was defined as curve progression to a surgical magnitude (≥ 50°). All patients were followed until brace discontinuation.Results90 patients (F:82, M:8) with an average age of 12.1(10.1–15.0) years, Risser grade 0(0–2), BMI percentile 48.5(0.0-98.8), and daily brace wear of 16.5(12.1–21.6) hrs/day were treated for 24.3(8.0-66.6) months. Patients went through 1.7(1–4) braces on average. 42/90(46.7%) patients had some amount of brace time with an unknown in-brace correction, which, on average, was 66.1% of their total treatment course (11.5–100). On univariate analysis, patients that did not have a repeat in-brace x-ray with major brace adjustments or new brace fabrication tended to be more skeletally immature (Risser 0 and tri-radiate open, p = 0.028), wear more braces throughout their treatment (2.0 vs 1.4, p < 0.001), were treated for a longer period of time (27 vs 22 months, p = 0.022), and failed bracing more often (47.6% vs 22.9%, p = 0.014).ConclusionsPatients who did not have new in-brace x-rays with major brace adjustments and/or new brace fabrication were 3.1(95% CI 1.2–7.6) times more likely to fail bracing than patients who were re-checked with new in-brace x-rays.Trial Registration:ClinicalTrials.gov - NCT02412137, Initial Registration Date April 2015

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