Osteoporosis en los maxilares y sus métodos de diagnóstico: Revisión de literatura / Osteoporosis of the Jaws and its Diagnostic Methods: Review of the Literature

Resumen: La osteoporosis es una enfermedad sistémica y metabólica ósea, multifactorial, crónica, silenciosa, caracterizada por una baja densidad mineral ósea y alteración de su micro arquitectura, con un alto índice de fracturas, con trauma mínimo o sin trauma (cadera, columna vertebral y antebrazos). La osteoporosis se puede dar en ambos sexos y en todas las edades, considerándose principalmente un problema de salud femenino después de la menopausia, con riesgo de fracturas por encima de los 50 años. Esto aumenta la morbilidad, la mortalidad y los costos de atención médica, considerándose un problema significativo de salud pública. El hueso normal tiene características de equilibrio entre formación de hueso por los osteoblastos y la resorción de hueso por los osteoclastos. En la osteoporosis este equilibrio se altera y hay mayor tendencia a la resorción. Los factores de riesgo para la osteoporosis son varios, entre los que destacan la edad, sexo, factores genéticos, menopausia temprana, inadecuado consumo de calcio, falta de ejercicios, alcoholismo y tabaquismo; pueden estar asociado a ciertas enfermedades endocrinas como el hiperparatiroidismo, insuficiencia renal crónica, enfermedad hepática, malabsorción y fármacos como el glucocorticoide oral. El objetivo de la presente revisión bibliográfica es brindar información actualizada y específica sobre la osteoporosis en los maxilares y sus métodos de diagnóstico, que permitan al odontólogo y radiólogo, reconocer, prevenir y/o derivar al especialista indicado los casos que puedan presentarse con esta condición.

Abstract: Osteoporosis is a chronic, silent, multifactorial and metabolic bone disease characterized by low bone mineral density and altered micro architecture, presenting a high fracture rate with minimal trauma or without trauma (hip, spine and forearms). Osteoporosis can occur in both sexes and in all ages; mainly considered a problem for postmenopausal women, with higher risk of fracture over 50 years old. This increases the morbidity, mortality and costs of the health system, considering it a significant public health issue. Healthy bone has equilibrium characteristics between bone formation by osteoblasts and bone resorption by osteoclasts. In osteoporosis this balance is altered, showing a greater tendency to resorption. The most important risk factors for osteoporosis are age, sex, genetic factors, early menopause, inadequate calcium intake, lack of exercise, alcoholism, and smoking; it can also be associated with some endocrine diseases, such as hyperparathyroidism, kidney failure chronic, liver disease, malabsorption and drugs, including oral glucocorticoids. The objective of this bibliographic review is to provide updated and specific information about osteoporosis in the jaws and its diagnostic methods, which allow the dentist and radiologist to recognize, prevent and / or refer to the specialist indicated cases that may arise with this condition.

Fractura vertebral osteoporótica en el adulto mayor / Osteoporotic vertebral fracture in the elderly

La fractura osteoporótica es una entidad clínica que afecta seriamente la calidad y expectativa de vida del paciente, agregándose un impacto socioeconómico elevado, superando incluso a los gastos de patologías como el infarto agudo de miocardio, accidente cerebrovascular y cáncer de mama, y cuya incidencia y prevalencia va en aumento a medida que la población mundial envejece. La gran mayoría de los casos cursan inadvertidos y sub diagnosticados, dejando a tres de cuatro pacientes, sin tratamiento y expuestos a nuevos eventos. El foco mundial en los países desarrollados como estrategia de enfrentamiento de esta patología endémica ha sido el de la prevención, vale decir medicina primaria. Sin embargo, una vez diagnosticada la fractura osteoporótica, no existe consenso en el tipo de tratamiento óptimo, así como sus plazos en estos pacientes. La mayoría de las guías internacionales y los trabajos publicados, presentan diferencias en el manejo de esta lesión.

The osteoporotic fracture is a clinical entity that seriously affects the quality and life expectancy of the patient, adding a high socioeconomic impact, even exceeding the expenses of pathologies such as acute myocardial stroke, vascular cerebral stroke and breast cancer, and whose incidence and prevalence is increasing as the world population ages. The vast majority of cases are non-diagnosed, leaving three of four patients with non treatment at all. The target in developed countries as a strategy to confront this endemic pathology has been prevention, or, primary medicine. However, once the osteoporotic fracture is diagnosed, there is no consensus on the type of optimal treatment, as well as its deadlines in these patients. The majority of international guidelines and published articles show differences in the management and treatment of this fracture.

Manejo subóptimo de fracturas por fragilidad en el Servicio de Traumatología del Hospital de Antofagasta / Suboptimal management of Frailty fractures in Traumatology Service of the Antofagasta Hospital

Existe escasa información respecto al estudio y manejo de la osteoporosis en los pacientes que han sufrido fractura por fragilidad en Chile. Objetivo: Describir la epidemiologia, aproximación diagnóstica y manejo realizado a pacientes hospitalizados por fractura por fragilidad (muñeca, cadera, columna) que ingresaron al Servicio de Traumatología (ST) del Hospital de Antofagasta (HRA). Método: Estudio retrospectivo, se revisó registros de pacientes hospitalizados en ST y se identificó a pacientes que presentaron fractura por fragilidad. Se revisó sus fichas clínicas (período enero 2015-diciembre 2016). Se analizaron factores de riesgos, exámenes realizados, terapias y controles médicos al alta. Resultados: Fueron 971 ingresos y 100 pacientes con fractura por fragilidad. 88% fueron mujeres cuya edad promedio fue 73,1 años. El factor de riesgo más común fue la postmenopausia y antecedente de fractura previa. Las fracturas se distribuyeron en cadera 64%, muñeca 35% y columna 1%. A solo 3 pacientes se le pidió densitometría ósea. En ninguno fue evaluada vitamina D ni PTH. Al 7% se indicó calcio y vitamina D post fractura, a 4% se indicó antiresortivos. En ningún paciente se promovió el consumo de lácteos. Discusión: Las fracturas osteoporóticas en el HRA son inadecuadamente estudiadas para descarte de factores modificables y son farmacológicamente subtratadas, con el riesgo de nueva aparición de fracturas por fragilidad y morbimortalidad asociada. Es importante reforzar en los servicios de traumatología la importancia del manejo médico postfracturas y eventualmente incorporar la participación de otros especialistas en el manejo de estos pacientes durante la hospitalización y al alta.

We have poor information regarding study and management of osteoporosis in patient who have a fragility fracture in Chile. Objetive: Describe epidemiology, diagnostic approach and management performed on patients hospitalized for fragility fracture in Traumatology Service(ST) of the Antofagasta Hospital(HRA). Method: Retrospective study, we reviewed your clinical record (period January 2015-December 2016). Risk factor, laboratory test performed, therapies and medical controls at discharge were analyzed. Resuls: 971 patient admited to ST, 100 were fragility fracture. 88% were women with average age 73,1 years old. The mosts commons risk factors were chronic kidney failure and anticonvulsants treatment. The fractures were 64% of hip, 35% wrist, and 1% column. Only 3 patients have bone densitometry. None had vitamin D or PTH evaluated. Calcium and vitamin D after fracture were indicated at 7%, antiresorptives were indicated at 4%. In none diary consumption were promoted. Discussion: Osteoporotic fractures in HRA are inadequately studied to rule out modifiable factors and they are pharmacologically subtracted, with risk of new fractures an mobility and mortality. Is important remember in the ST importance of the medical management postfracture and the multidisciplinary work.

Riesgo de fractura osteoporótica y factores de riesgo asociados en mujeres postmenopáusicas en atención primaria de salud / Risk of osteoporotic fracture and associated risk factors in postmenopausal women in primary health care

Resumen Objetivo: Analizar el riesgo de fractura osteoporótica y factores de riesgo asociados en mujeres postmenopáusicas bajo control en un Centro de Atención Primaria de Salud. Material y Método: Estudio cuantitativo de corte transversal, selección de muestra de 197 mujeres entre 50 y 64 años, se calculó su riesgo de fractura mediante FRAX, una herramienta predictiva de fractura que incorpora factores de riesgo, y permite determinar la probabilidad a diez años de sufrir riesgo de fractura osteoporótica mayor y de cadera. Resultados: Un promedio de 3,46% ± 3,18% para riesgo de fractura mayor y de 0,84% ± 1,30% para riesgo de fractura de cadera. La categorización del riesgo indicó un 3% con alto riesgo para fractura mayor y un 11,2% alto riesgo para fractura de cadera. La mayor prevalencia de factores de riesgo fueron la osteoporosis secundaria, fumadora activa y fractura previa. Conclusiones: La situación de riesgo de fractura y los factores de riesgo más prevalentes observados, requiere establecer intervenciones preventivas desde el nivel de atención primaria de salud.

Abstract Objective: To analyze the risk of osteoporotic fracture and associated risk factors in postmenopausal women under control in a Primary Health Care Center. Material and Method: A cross-sectional quantitative study, sample selection of 197 women between 50 and 64 years of age, their risk of fracture was calculated using FRAX, a predictive tool for fracture that incorporates risk factors, and allows the probability to be determined ten years Risk of major osteoporotic fracture and hip fracture. Results: A mean of 3.46% ± 3.18% for greater fracture risk and 0.84% ± 1.30% for hip fracture risk. Risk categorization indicated 3% with high risk for major fracture and 11.2% high risk for hip fracture. The highest prevalence of risk factors was secondary osteoporosis, active smoking, and previous fracture. Conclusions: The situation of risk of fracture and the most prevalent risk factors observed requires establishing preventive interventions from the level of primary health care.

FRAX Tool in Brazil: an integrative literature review following validation / Ferramenta FRAX no Brasil: revisão integrativa da literatura após sua validação

Abstract The present article is an integrative review the objective of which was to assess research carried out with the FRAX tool in Brazil following its validation, and describe the conclusions drawn. Two databases were used to select the articles (the Capes Portal and the Virtual Health Library), and the sample of this review was the only four articles published in Brazil relating to the FRAX tool following its validation in May 2013. After analyzing the articles, the results demonstrated that despite some limitations the FRAX Tool can be used to reduce the prevalence of fractures due to its simplicity of use, with an emphasis on prediction and orientation, allowing early and safe therapeutic decision-making. AU

Resumo O presente artigo é uma revisão integrativa que teve como objetivo investigar o uso da ferramenta FRAX no Brasil após sua validação, sintetizar e apreender os resultados desses estudos e discutir as suas principais indicações e limitações. Para a seleção dos artigos utilizou-se duas fontes de bases de dados, Portal Capes e Biblioteca Virtual em Saúde, e a amostra desta revisão constituiu-se dos únicos quatro artigos publicados no Brasil utilizando a ferramenta FRAX, após sua validação em maio de 2013. Após análise dos artigos incluídos na revisão, os resultados dos estudos demonstraram que a ferramenta FRAX, com ênfase na predição e orientação, apesar de algumas limitações, é uma das estratégias que podem ser usadas na diminuição da prevalência de fraturas pela possibilidade de uso ambulatorial devido à sua simplicidade de aplicação, permitindo uma tomada de decisão terapêutica precoce e segura. AU

Practical Use of Bone Scan in Patients with an Osteoporotic Vertebral Compression Fracture

Rib fractures are one of main causes of chest or flank pain when related to an osteoporotic vertebral compression fracture (OVCF). The authors investigated the incidence and risk factors of rib fracture in 284 patients with OVCF using bone scans and evaluated the feasibility as to whether bone scans could be utilized as a useful screening tool. Hot uptake lesions on ribs were found in 122 cases (43.0%). The factors analyzed were age, sex, number and locations of fractured vertebrae, BMD, and compression rates as determined using initial radiography. However, no statistical significances were found. In 16 cases (5.6%), there were concurrent multiple fractures of both the thoracic and lumbar spines not detected by single site MRI. Sixty cases (21.1%) of OVCF with the a compression rate of less than 15% could not be identified definitely by initial plain radiography, but were confirmed by bone scans. It is concluded that a bone scan has outstanding ability for the screening of rib fractures associated with OVCF. Non-adjacent multiple fractures in both thoracic and lumbar spines and fractures not identified definitely by plain radiography were detected on bone scans, which provided a means for determining management strategies and predicting prognosis.

Practical Use of Bone Scan in Patients with an Osteoporotic Vertebral Compression Fracture

Rib fractures are one of main causes of chest or flank pain when related to an osteoporotic vertebral compression fracture (OVCF). The authors investigated the incidence and risk factors of rib fracture in 284 patients with OVCF using bone scans and evaluated the feasibility as to whether bone scans could be utilized as a useful screening tool. Hot uptake lesions on ribs were found in 122 cases (43.0%). The factors analyzed were age, sex, number and locations of fractured vertebrae, BMD, and compression rates as determined using initial radiography. However, no statistical significances were found. In 16 cases (5.6%), there were concurrent multiple fractures of both the thoracic and lumbar spines not detected by single site MRI. Sixty cases (21.1%) of OVCF with the a compression rate of less than 15% could not be identified definitely by initial plain radiography, but were confirmed by bone scans. It is concluded that a bone scan has outstanding ability for the screening of rib fractures associated with OVCF. Non-adjacent multiple fractures in both thoracic and lumbar spines and fractures not identified definitely by plain radiography were detected on bone scans, which provided a means for determining management strategies and predicting prognosis.

Fraturas osteoporóticas da coluna vertebral / Osteoporotic fractures spine

As fraturas vertebrais são comuns em idosos e em mulheres no período pós-menopausa. Tais fraturas podem ter como etiologia principal a osteoporose ou ser decorrentes de trauma, infecções ou neoplasia.A osteoporose é caracterizada por diminuição da massa e modificação da microarquitetura óssea, sendo a manifestação mais comum a fratura patológica. Apresenta como manifestação clínica dor, diminuição da altura e desalinhamento da coluna vertebral, sintomas neurológicos, bem como alteração na autoestima e problemas sociais. O diagnóstico de osteoporose é dado por meio da realização de densitometria óssea, sendo esse o padrão-ouro, podendo-se lançar mão de outros métodos de imagemem situações específicas. O tratamento da osteoporose inclui métodos para a prevenção de fraturas, tais como reposição de cálcio e vitamina D, uso de bifosfonados, paratormônio e reposição hormonal. Quando em vigência de fratura, a conduta preferida ainda é a abordagem não cirúrgica, sendo feitapor meio de imobilização, uso de analgésicos, fisioterapia e reabilitação motora. Quando em vigência de déficit neurológico, deformidade severa ou ausência de resposta ao tratamento conservador, está indicada a abordagem cirúrgica.

Vertebral fractures are common in the elderly and in women in the post menopausal period. Such fractures can have as cause osteoporosis or be due to trauma, infection or neoplasia. Osteoporosis is characterized by decreased bone mass and modified microarchitecture, the most common manifestation of a pathological fracture. Presenting clinical manifestation as pain, height loss and misalignment of the spine, neurological symptoms, and change in self-esteem and social problems. The diagnosis of osteoporosis is given by bone densitometry, this being the gold standard, and we can make use of other imaging methods in specific situations. Treatment of osteoporosis includes methods for the prevention of fractures, such as treatment with calcium and vitamin D, use of bisphosphonates, parathyroid hormone and hormone replacement. When in the presence of fracture, the preferred approach is still nonsurgical approach being taken by immobilization, analgesics, physical therapy and motor rehabilitation. Whenin the presence of neurologic deficit, severe deformity or lack of response to conservative treatment require surgical approach.

Trabecular bone score: perspectives of an imaging technology coming of age / Escore de osso trabecular: perspectivas de um método de imagem em aprimoramento

The trabecular bone score (TBS) is a new method to describe skeletal microarchitecture from the dual energy X-ray absorptiometry (DXA) image of the lumbar spine. While TBS is not a direct physical measurement of trabecular microarchitecture, it correlates with micro-computed tomography (µCT) measures of bone volume fraction, connectivity density, trabecular number, and trabecular separation, and with vertebral mechanical behavior in ex vivo studies. In human subjects, TBS has been shown to be associated with trabecular microarchitecture and bone strength by high resolution peripheral quantitative computed tomography (HRpQCT). Cross-sectional and prospective studies, involving a large number of subjects, have both shown that TBS is associated with vertebral, femoral neck, and other types of osteoporotic fractures in postmenopausal women. Data in men, while much less extensive, show similar findings. TBS is also associated with fragility fractures in subjects with secondary causes of osteoporosis, and preliminary data suggest that TBS might improve fracture prediction when incorporated in the fracture risk assessment system known as FRAX. In this article, we review recent advances that have helped to establish this new imaging technology.

TBS (do inglês, “trabecular bone score”) é um novo método que estima a microarquitetura óssea a partir de uma imagem de densitometria óssea (DXA) da coluna lombar. Apesar de o TBS não ser uma medida física direta da microarquitetura trabecular, ele correlaciona-se com o volume ósseo, densidade da conectividade trabecular, número de trabéculas e separação trabecular medidos por microtomografia computadorizada (µCT), e com medidas mecânicas da resistência óssea vertebral em estudos ex vivo. Estudos em humanos confirmaram que o TBS associa-se a microarquitetura trabecular e resistência óssea medidas por tomografia computadorizada quantitativa periférica de alta resolução (HRpQCT). Estudos transversais e prospectivos, envolvendo um grande número de indivíduos, mostraram que o TBS é associado com fratura vertebral, de colo de fêmur e com outros tipos de fraturas osteoporóticas em mulheres na pós-menopausa. Dados em homens, apesar de escassos, mostram resultados semelhantes. Além disso, o TBS foi associado a fraturas por fragilidade em indivíduos com diversas causas secundárias de osteoporose e, dados preliminares, sugerem que o uso do TBS pode melhorar a previsão de fratura quando incorporado ao sistema de avaliação de risco de fratura (FRAX). Este artigo faz uma revisão de avanços recentes que têm ajudado a estabelecer esse novo método de imagem.

The Risk of Osteoporotic Fractures According to the FRAX Model in Korean Patients with Rheumatoid Arthritis

The aim of the current study is to identify patients without osteoporosis who met the criteria of the fracture risk assessment tool (FRAX) of the National Osteoporosis Foundation (NOF) only. The incidence of fractures was investigated in patients who met only the FRAX criteria of the NOF and patients who presented osteoporosis. Five hundred and forty five patients with rheumatoid arthritis who visited a single center were recruited in Korea. In the follow-up period of median 30 months, the new onset of fractures was investigated. Of 223 patients who have no osteoporosis, 39 (17.4%) satisfied the FRAX criteria for pharmacological intervention. During the follow-up period, 2 new onset fractures occurred in patients who met only the FRAX criteria and 22 new onset fractures did in patients with osteoporosis by bone mineral density. The incidence rate for new onset fractures of patients who met only the FRAX criteria was with 295.93 per 10,000 person-years higher than in the general population with 114.99 per 10,000 person-years. Patients who met the FRAX criteria of the NOF only need pharmacological intervention because their numbers of incidence for new onset fractures are similar to those of patients with osteoporosis by BMD.