Cep telefonlarından kaynaklanan 1800 MHZ elektromanyetik alanın kemik doku üzerine etkileri

Amaç: Elektromanyetik alanın (EMA) kemik hücreleri üzerine bazı biyolojik etkileri olduğu bildirilmiştir. Çalışmamızda, cep telefonlarından yayılan 1800 MHz frekansındaki EMA'nın rat kemik dokusundaki kemik mineral yoğunluğu üzerine etkilerini araştırmak amaçlanmıştır. Gereçler ve Yöntemler: Otuz erkek Wistar-albino sıçan kontrol ve EMA olmak üzere iki gruba ayrıldı. EMA grubundaki ratlar, dört hafta boyunca haftada beş gün ve günde 30 dakika 1±04 mW/cm2 gücünde 1800 MHz frekansında EMA'ya maruz bırakıldı. Kontrol grubu, aynı gün ve sürede EMA uygulanmaksızın aynı çevresel şartlarda tutuldu. Çalışma sonunda tüm sıçanların kemik mineral yoğunluğu değerleri “Dual Energy X-ray Absorptiometry” cihazı ile taranarak ölçüldü. Bulgular: EMA grubunda kontrol grubuna göre lomber kemik mineral yoğunluğunda minimal artma, femur kemik mineral yoğunluğunda ise minimal azalma saptandı. Ancak, istatistiksel olarak anlamlı fark saptanmadı (p>0.05). Sonuç: Osteoporoz açısından bakıldığı zaman yüksek frekanslı EMA'nın kemik dokusu üzerinde etkisi saptanmamıştır. Cep telefonları frekanslarına maruz kalmanın etkileri arasında kanser gibi ciddi hastalıkların olması nedeniyle insan sağlığı üzerindeki etkilerini araştırmak amacıyla daha ileri çalışmalara gereksinim olduğu kanaatindeyiz.Objectives: An electromagnetic field (EMF) has biological effects on the behavior of the cell populations. The purpose of this study was to investigate the effects of 1800 MHz EMF which is similar to the cellular phones on the bone mineral density (BMD) of rat bone tissue. Materials and Methods: A total of 30 male rats were divided into two groups as EMF and controls. EMF with 1±04 mW/cm2 power and 1800 MHz frequency has been applied on rats for four weeks, five days per week and 30 minutes each day. Control group was held in the same environmental conditions for the same time except EMF application. At the end, BMD of all rats was measured by scanning with Dual Energy X-ray Absorptiometry. Results: Although a small increase in lumbar BMD and a decrease in BMD of the femur was determined in the group affected by 1800 MHz EMF, a significant difference was not found (p>0.05). Conclusion: Our results suggest that high frequency EMF has no effect on bone tissue with regard to osteoporosis. As serious diseases like cancer has been speculated as an outcome of exposure to frequencies used in mobile phones, further studies are warranted to reveal its effects on human health

A Comparison of Bone Mineral Density Measurements in Two Different Regions of Turkey

Objective: It was aimed to compare the values of bone mineral density (BMD) measurements made of patients in the osteoporosis (OP) unit in the provinces of Muğla and Erzurum provinces and to determine OP prevelance. Materials and Methods: The data were evaluated of a total of 3862 patients aged over 50 years, who were included in the study. Of patients; ages, sex, and body mass index (BMI) were recorded. Patients in Muğla were included in the 1st group, and patients in Erzurum were included in the second group. The BMDs of the spine (L1-4) and hip (femur neck) in both groups were measured using the dual energy X-ray absorptiometry (DEXA) method. Materials and Methods: The data were evaluated of a total of 3862 patients aged over 50 years, who were included in the study. Of patients; ages, sex, and body mass index (BMI) were recorded. Patients in Muğla were included in the 1st group, and patients in Erzurum were included in the second group. The BMDs of the spine (L1-4) and hip (femur neck) in both groups were measured using the dual energy X-ray absorptiometry (DEXA) method. Results: A total of 3862 patients were included in the study. In group 1, the total number of patients was 2611 and 2518 of them were female, 93 were male. In the group 2, 1251 patients were present and 1093 were female and 158 were male. The mean age was 63.63±8.84 years in group 1 and 65.44±9.26 years in group 2, and the difference was statistically significant (p<0.001). A statistically significant difference was determined between the groups in respect of BMI (p<0.001). A statistically significant difference was determined between the femoral neck T-scores of the cases (p<0.001). Between the females of the two groups, a statistically significant difference was determined in respect of the Lumbar 1-4 T-score but no difference was seen between the males (p<0.001, p=0.726, respectively). Conclusion: The femoral neck BMD values of patients in the Muğla region were found to be significantly lower than those of the patients in the Erzurum region. Despite the significant risk factors for BMD and OP in the Erzurum region of less sunlight and regional differences, the BMD values were determined to be higher. Nutritional habits are thought to be effective in the end. We believe that regional differences and local values are a factor to be considered in the interpretation of BMD

The effects of electromagnetic field exposure at short and long term of 900 mhz frequency emitted from mobile phones on rat bone tissue

Objectives: There are increasing number of evidence that exposure to the radiofrequency fields from mobile phones could affect human health. An electromagnetic field (EMF) has some biological effects on the behavior of the cell population of bone. The aim of this study was to investigate the effects of 900 MHz EMF emitted by mobile phones on the bone mineral density (BMD) of rat bone tissue.Materials and methods: This study was done in Süleyman Demirel University, Turkey in 2006 . A total of 30 male rats were divided in three groups. EMF with 1±04 mW/cm2 power and 900 MHz frequency: Group I (n=10) was exposed to short term (ST) 900 MHz EMF for 30 min/day, fıve day per week during 4 weeks, group II (n=10) was exposed to long term (LT) 900 MHz EMF for 30 min/day fıve day per week during 8 weeks and group III (n=10) was non-irradiated as control group and was held in the same environmental conditions for the same time except EMF application. At the end of the experiment, BMD of all rats was measured by scanning with Dual Energy X-ray Absorptiometry.Results: Both lumbar spine and femur diaphysis BMD values were found to be lower in the exposed to ST or LT 900 MHz groups compared with the control group. However, the differences did not reach to a significant level (P>0.05).Conclusions: It can be said that exposure to ST or LT 900 MHz EMF acquired from cellular phones and/or similar sources with an average power intensity of 1.04 mW/cm2 and a SAR value of 0.008 W/kg has not significant effects on rats bone tissue BM

Perioperative outcomes following a hip fracture surgery in elderly patients with heart failure with preserved ejection fraction and heart failure with a mid-range ejection fraction

BACKGROUND: To examine the influence of heart failure (HF) with preserved ejection fraction (HFPEF) and HF with mid-range ejection fraction (HFmrEF) on perioperative cardiac and noncardiac outcomes following hip fracture surgery

Efficacy of Pie-Crusting Technique on Soft Tissues in Distal Tibia and Fibula Fractures

Distal tibia and fibula fractures are challenging injuries to treat as evidenced by the high rates of wound complications because of vulnerable soft tissue coverage. The aim of this study was to examine the effect on soft tissue complications of the pie-crusting technique when applied between 2 incisions in distal tibia and fibula fractures treated with open reduction and internal fixation. We reviewed 34 patients with distal tibia and fibula fractures treated between September 2014 and March 2017. The pie-crusting technique was performed during wound closure in 16 (47.06%) fractures (group 1) and classic wound closure was done in 18 (52.94%) fractures (group 2). The primary outcome was evaluated as the presence or absence of soft tissue complications such as superficial skin necrosis, deep skin necrosis, and deep infection. The mean age was 50.44 +/- 13.51 (range 23 to 65) years in group 1 and 51.67 +/- 14.49 (range 18 to 68) years in group 2. The mean follow-up time was 27.35 +/- 9.02 (range 16 to 46) months. The mean surgery time after injury was 5.88 +/- 3.5 (range 1 to 14) days in group 1 and 7.32 +/- 4.25 (range 1 to 16) days in group 2. No soft tissue complications were seen in any patient in group 1. Five (27.77%) occurrences of superficial skin necrosis were observed in group 2. In 2 (11.11%) patients in group 2, deep necrosis and wound dehiscence occurred, and subsequent deep infection developed in 1 (5.55%) of these patients. The overall complication rate was higher in group 2 (p = .005). We believe that the pie-crusting technique is beneficial for wound closure in distal tibia and fibula fractures, because it reduces the tension of the skin and allows leakage of subcutaneous fluids. (C) 2018 by the American College of Foot and Ankle Surgeons. All rights reserved

Treatment results for acetabulum fractures using the modified Stoppa approach

Objectives: The aim of this study was to evaluate the clinical and radiological results of the surgical treatment of acetabular fractures using modified Stoppa approach

Effects of different anesthesia techniques on intraoperative blood loss in acetabular fractures undergoing the Modified Stoppa approach

BACKGROUND: This study aims to evaluate the effects of the anesthesia technique on the intraoperative blood loss in acetabular fracture patients undergoing the Modified Stoppa approach

Surgical Treatment of Osteopetrosis-Related Femoral Fractures: Two Case Reports and Literature Review

Osteopetrosis is a rare hereditary disease which is characterized by increased bone density. Bone resorption is insufficient or fails due to the osteoclast defect in osteopetrosis. Half of the patients are asymptomatic and diagnosed incidentally or based on the presence of fracture. Adult onset osteopetrosis usually presents with hip and proximal femoral fractures. Internal fixation can be performed; however, technical challenges may be experienced due to increased bone density. As in other fractures, nonunion or varus malunion of these fractures may occur. Although rare, osteopetrosis may complicate treatment of fractures in such patients. In this study, we aimed to present two new cases of ADO type II with an osteopetrotic femoral fracture along with the clinical and radiological findings in the light of a comprehensive literature review. Orthopaedics surgeons should be aware of intraoperative technical difficulties and possible postoperative complications during the follow-up period. Investigation would be beneficial for the diagnosis of osteopetrosis such the patient with fractures who has minor trauma history and increased bone density in radiography

Influence of 1800 MHz GSM-like Electromagnetic Radiation Exposure on Fracture Healing

Background and Aims. In this study, we aimed to investigate whether 1800 MHz frequency electromagnetic radiation (EMR) has an effect on bone healing