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group_5_presentation_1_-_osteoporosis [2018/09/28 15:16] jiangh14 |
group_5_presentation_1_-_osteoporosis [2018/09/30 14:29] (current) chuj19 [Osteoporosis] |
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| ====== Introduction ====== | ====== Introduction ====== | ||
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| The human skeleton is composed of 206 bones. Bones are composed of tissue, proteins, minerals and vitamins. The formation, modelling and breakdown of bone is regulated by bone cells such as osteoblasts, and osteoclasts (International Osteoporosis Foundation, 2017). Osteoblasts are the cells responsible for producing and secreting bone matrix proteins for bone synthesis and remodelling, while osteoclasts are responsible for bone breakdown through the reabsorption. When the activity of osteoclasts surpasses the bone formation by osteoblasts, the bones become brittle and porous leaving them susceptible to fractures(International Osteoporosis Foundation, 2017). As the population ages, osteoporosis poses an increasing social and medical demand on individuals, caregivers and healthcare providers. Currently, prevention, detection and management are instrumental in managing this condition (Cosman et al., 2014). | The human skeleton is composed of 206 bones. Bones are composed of tissue, proteins, minerals and vitamins. The formation, modelling and breakdown of bone is regulated by bone cells such as osteoblasts, and osteoclasts (International Osteoporosis Foundation, 2017). Osteoblasts are the cells responsible for producing and secreting bone matrix proteins for bone synthesis and remodelling, while osteoclasts are responsible for bone breakdown through the reabsorption. When the activity of osteoclasts surpasses the bone formation by osteoblasts, the bones become brittle and porous leaving them susceptible to fractures(International Osteoporosis Foundation, 2017). As the population ages, osteoporosis poses an increasing social and medical demand on individuals, caregivers and healthcare providers. Currently, prevention, detection and management are instrumental in managing this condition (Cosman et al., 2014). | ||
| - | {{ :osteo_1.jpg?direct&400 |}} | + | {{ :osteo_1.jpg?direct&400 |}} **Figure 1:** Healthy bone vs. bone with osteoporosis as identified by porous quality. |
| ====== History ====== | ====== History ====== | ||
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| Osteoporosis is one of the most common bone diseases among elderlies in Canada, affecting more than 2 million Canadians(Lyda, 2014); costing more than 456 million dollars annually (Government of Canada, 2016). However, since patients are usually not aware of this disease at early stages, this number may exclude ones not yet diagnosed. In 2002, the WHO found that osteoporosis has the 6th highest DALY (Disability-adjusted life years) in Europe and Americas. DALY is measures the cost of burdened disability compared to the regular life expectancy; calculated by total years of disability plus the difference in years of early death compared to the local life expectancy. In Canada, one in every three female and one in five male will be diagnosed with osteoporosis (Osteoporosis Canada, 2018). Osteoporosis may begin as early as in the the mid-30s, however it is usually not diagnosed until late in life. The most common sites of osteoporosis include the vertebrae, the hip and wrists (Masi, 2008). | Osteoporosis is one of the most common bone diseases among elderlies in Canada, affecting more than 2 million Canadians(Lyda, 2014); costing more than 456 million dollars annually (Government of Canada, 2016). However, since patients are usually not aware of this disease at early stages, this number may exclude ones not yet diagnosed. In 2002, the WHO found that osteoporosis has the 6th highest DALY (Disability-adjusted life years) in Europe and Americas. DALY is measures the cost of burdened disability compared to the regular life expectancy; calculated by total years of disability plus the difference in years of early death compared to the local life expectancy. In Canada, one in every three female and one in five male will be diagnosed with osteoporosis (Osteoporosis Canada, 2018). Osteoporosis may begin as early as in the the mid-30s, however it is usually not diagnosed until late in life. The most common sites of osteoporosis include the vertebrae, the hip and wrists (Masi, 2008). | ||
| + | {{ :oestop1.png?500 |}} **Figure 2:** Disability-adjusted life year in thousands for varies chronic diseases. | ||
| ==== Risk Factors ==== | ==== Risk Factors ==== | ||
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| + | Risk factors for osteoporosis differ between individuals under and over the age of 50. | ||
| Younger adults (age < 50 years): | Younger adults (age < 50 years): | ||
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| (Canadian Cancer Society, 2018) | (Canadian Cancer Society, 2018) | ||
| - | {{ :screen_shot_2018-09-19_at_12.39.58_pm.png?direct&500 |}} **Figure _:** Four common signs of osteoporosis that is prevalent such as decrease in height overtime, hunched or stooped posture, back pain, and easier than usual bone fracturing. | + | {{ :screen_shot_2018-09-19_at_12.39.58_pm.png?direct&500 |}} **Figure 3:** Four common signs of osteoporosis that is prevalent such as decrease in height overtime, hunched or stooped posture, back pain, and easier than usual bone fracturing. |
| ==== Areas of Fractures ==== | ==== Areas of Fractures ==== | ||
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| Another common area of fracture occurs in hip fractures are considered the most common fracture that occurs during osteoporosis (Gardner, Demetrakopoulos, Shindle, Griffih, and Lane 2006). This commonly occurs within individuals in their late 70s or 80s and those who experience a hip fracture are at high risk to develop fractures in other areas (Osteoporosis Canada, 2018). It also causes the highest cost associated and most often a hip replacement is needed in order to allow the individual to regain function (Gardner, Demetrakopoulos, Shindle, Griffih, and Lane 2006). Hip fractures occur due to the femoral head being supported by a thin structure which is called the femoral neck. The femoral neck is prone for fracture in those who have bone disorders including osteoporosis (Metcalfe, 2008). | Another common area of fracture occurs in hip fractures are considered the most common fracture that occurs during osteoporosis (Gardner, Demetrakopoulos, Shindle, Griffih, and Lane 2006). This commonly occurs within individuals in their late 70s or 80s and those who experience a hip fracture are at high risk to develop fractures in other areas (Osteoporosis Canada, 2018). It also causes the highest cost associated and most often a hip replacement is needed in order to allow the individual to regain function (Gardner, Demetrakopoulos, Shindle, Griffih, and Lane 2006). Hip fractures occur due to the femoral head being supported by a thin structure which is called the femoral neck. The femoral neck is prone for fracture in those who have bone disorders including osteoporosis (Metcalfe, 2008). | ||
| - | {{ :osteoporosis-scoliosis.jpg?direct&500 |}} **Figure 1:** An image showing the effects of having one or more fractures in osteoporosis . | + | {{ :osteoporosis-scoliosis.jpg?direct&500 |}} **Figure 4:** An image showing the effects of having one or more fractures in osteoporosis . |
| ====== Diagnosis ====== | ====== Diagnosis ====== | ||
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| {{:screen_shot_2018-09-19_at_12.48.05_pm.png?700|}} | {{:screen_shot_2018-09-19_at_12.48.05_pm.png?700|}} | ||
| - | **Figure __:** A table demonstrating the comparison of standard deviations created by the World Health Organization (WHO). | + | **Figure 5:** A table demonstrating the comparison of standard deviations created by the World Health Organization (WHO). |
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| ====== Pathophysiology ====== | ====== Pathophysiology ====== | ||
| - | Osteoporosis is known defined as having a low bone mass and the deterioration of bone tissue which leads to a high incidence of bone fracture for individuals. The likelihood of obtaining osteoporosis usually increases with age. The mechanism and rate for which older individuals lose bone, positively correlates with calcium deficiency. | + | Osteoporosis is known defined as having a low bone mass and the deterioration of bone tissue which leads to a high incidence of bone fracture for individuals. The likelihood of obtaining osteoporosis usually increases with age. The mechanism and rate for which older individuals lose bone, positively correlates with calcium deficiency (NIH, 2018). |
| - | There are two main types of osteoporosis; primary and secondary. Primary osteoporosis is caused by an age-related bone loss, typically occurring to men that are above the age of 70. Secondary osteoporosis is when bone mass is lost due to onset of certain diseases, bad lifestyle, etc. Some common causes of secondary osteoporosis include cigarette smoking, alcoholism, and low testosterone levels in men. | + | There are two main types of osteoporosis; primary and secondary. Primary osteoporosis is caused by an age-related bone loss, typically occurring to men that are above the age of 70. Secondary osteoporosis is when bone mass is lost due to onset of certain diseases, bad lifestyle, etc. Some common causes of secondary osteoporosis include cigarette smoking, alcoholism, and low testosterone levels in men (NIH, 2018). |
| This calcium deficiency leads to secondary hyperparathyroidism; elevated PTH levels in the blood. This stimulates osteoclast activity within the bone resulting in more bone resorption than normal. | This calcium deficiency leads to secondary hyperparathyroidism; elevated PTH levels in the blood. This stimulates osteoclast activity within the bone resulting in more bone resorption than normal. | ||
| - | The reason for why osteoporosis is usually seen in older individuals is due to a couple of factors. Aging skin along with decreased sun exposure, reduces the conversion of a precursor of vitamin D (7-dehydrocholesterol) to Vitamin D3. Ultimately, this causes Vitamin D insufficiency which reduces the amount of calcium being absorbed. | + | The reason for why osteoporosis is usually seen in older individuals is due to a couple of factors. Aging skin along with decreased sun exposure, reduces the conversion of a precursor of vitamin D (7-dehydrocholesterol) to Vitamin D3. Ultimately, this causes Vitamin D insufficiency which reduces the amount of calcium being absorbed (Kenny et al., 2000). |
| - | In females, menopause usually leads to the loss of bone mass. When menopause occurs, the hormone progesterone is deficient. Some supporting data from 1990 suggests that progesterone plays the role of being a bone formation-stimulating hormone. Although supported, nothing is concrete as this hormone regulated by estrogen, thereby including multiple confounding variables. | + | In females, menopause usually leads to the loss of bone mass. When menopause occurs, the hormone progesterone is deficient. Some supporting data from 1990 suggests that progesterone plays the role of being a bone formation-stimulating hormone. Although supported, nothing is concrete as this hormone regulated by estrogen, thereby including multiple confounding variables (Wark, 1993). |
| - | In males studies have been done linking bone mineral densities to testosterone levels. When comparing the estrogen level of males, the group of males with the highest levels had the highest bone mineral density, while the group of males with the lowest estrogen levels had the highest risk of a hip fracture. In contrast, when measuring levels of testosterone, there was no significant difference in hip fracture risk when looking at hypogonadal men versus eugonadal men. This supports the fact that the hormone estrogen plays more of a role in bone health in comparison to testosterone. | + | In males studies have been done linking bone mineral densities to testosterone levels. When comparing the estrogen level of males, the group of males with the highest levels had the highest bone mineral density, while the group of males with the lowest estrogen levels had the highest risk of a hip fracture. In contrast, when measuring levels of testosterone, there was no significant difference in hip fracture risk when looking at hypogonadal men versus eugonadal men. This supports the fact that the hormone estrogen plays more of a role in bone health in comparison to testosterone (Golds et al., 2017). |
| ====== Treatments - Prevention & Management ====== | ====== Treatments - Prevention & Management ====== | ||
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| ====== Conclusion ====== | ====== Conclusion ====== | ||
| - | Osteoporosis is set to become a major health concern with an ageing population. Scientists have identified human stem cells that develop into the bone, cartilage, and other tissues that make up the body’s skeleton | + | Osteoporosis is set to become a major health concern with an ageing population. Scientists have identified human stem cells that develop into the bone, cartilage, and other tissues that make up the body’s skeleton (Price et al., 2018). This will one day help doctors repair or replace joint cartilage, heal broken bones more quickly, and build up bone in osteoporosis patients. Additionally, a new genetic screen may predict a person’s future risk of osteoporosis and bone fracture and may allow for more preventative measures (University of Stanford, 2018). |
| - | This will one day help doctors repair or replace joint cartilage, heal broken bones more quickly, and build up bone in osteoporosis patients. Additionally, a new genetic screen may predict a person’s future risk of osteoporosis and bone fracture and may allow for more preventative measures. | + | |
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| Bone Mass Measurement: What the Numbers Mean (2018). | NIH Osteoporosis and Related Bone Diseases National Resource Center. | Bone Mass Measurement: What the Numbers Mean (2018). | NIH Osteoporosis and Related Bone Diseases National Resource Center. | ||
| Cosman, F., De Beur, S. J., LeBoff, M. S., Lewiecki, E. M., Tanner, B., Randall, S., & Lindsay, R. (2014). Clinician’s guide to prevention and treatment of osteoporosis. Osteoporosis international, 25(10), 2359-2381. | Cosman, F., De Beur, S. J., LeBoff, M. S., Lewiecki, E. M., Tanner, B., Randall, S., & Lindsay, R. (2014). Clinician’s guide to prevention and treatment of osteoporosis. Osteoporosis international, 25(10), 2359-2381. | ||
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| + | Fracturedtruths.com. (2018). Different Types of Osteoporosis Fractures | Radius Health. [online] Available at: https://www.fracturedtruths.com/osteoporosis-fracture-facts [Accessed 29 Sep. 2018]. | ||
| Gardner, M., Demetrakopoulos, D., Shindle, M., Griffith, M. and Lane, J. (2006). Osteoporosis and Skeletal Fractures. HSS Journal, 2(1), pp.62-69. | Gardner, M., Demetrakopoulos, D., Shindle, M., Griffith, M. and Lane, J. (2006). Osteoporosis and Skeletal Fractures. HSS Journal, 2(1), pp.62-69. | ||
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| + | Golds, G., Houdek, D., & Arnason, T. (2017). Male hypogonadism and osteoporosis: the effects, clinical consequences, and treatment of testosterone deficiency in bone health. International journal of endocrinology, 2017. | ||
| Government of Canada. (2016, September 16). Osteoporosis Awareness Month – Exposing The Bone Thief. Retrieved from https://infobase.phac-aspc.gc.ca/datalab/osteo-blog-en.html?=undefined&wbdisable=true | Government of Canada. (2016, September 16). Osteoporosis Awareness Month – Exposing The Bone Thief. Retrieved from https://infobase.phac-aspc.gc.ca/datalab/osteo-blog-en.html?=undefined&wbdisable=true | ||
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| Masi, L. (2008). Epidemiology of osteoporosis. Clinical cases in mineral and bone metabolism, 5(1), 11. | Masi, L. (2008). Epidemiology of osteoporosis. Clinical cases in mineral and bone metabolism, 5(1), 11. | ||
| - | National Osteoporosis Foundation. (2018). Osteoporosis and Your Spine - National Osteoporosis Foundation. [online] Available at: https://www.nof.org/patients/fracturesfall-prevention/exercisesafe- | + | National Osteoporosis Foundation. (2018). Osteoporosis and Your Spine - National Osteoporosis Foundation. [online] Available at: https://www.nof.org/patients/fracturesfall-prevention/exercisesafe-movement/osteoporosis-and-your-spine/ [Accessed 24 Sep. 2018]. |
| Osteoporosis - Canadian Cancer Society. [online] Available at: http://www.cancer.ca/en/cancer-information/diagnosis-and-treatment/managing-side-effects/osteoporosis/?region=on#ixzz5QdWol1aw [Accessed 24 Sep. 2018]. | Osteoporosis - Canadian Cancer Society. [online] Available at: http://www.cancer.ca/en/cancer-information/diagnosis-and-treatment/managing-side-effects/osteoporosis/?region=on#ixzz5QdWol1aw [Accessed 24 Sep. 2018]. | ||
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| Paul Lips, Tu Duong, Anna Oleksik, Dennis Black, Steven Cummings, David Cox, Thomas Nickelsen; A Global Study of Vitamin D Status and Parathyroid Function in Postmenopausal Women with Osteoporosis: Baseline Data from the Multiple Outcomes of Raloxifene Evaluation Clinical Trial, The Journal of Clinical Endocrinology & Metabolism, Volume 86, Issue 3, 1 March 2001, Pages 1212–1221, https://doi.org/10.1210/jcem.86.3.7327 | Paul Lips, Tu Duong, Anna Oleksik, Dennis Black, Steven Cummings, David Cox, Thomas Nickelsen; A Global Study of Vitamin D Status and Parathyroid Function in Postmenopausal Women with Osteoporosis: Baseline Data from the Multiple Outcomes of Raloxifene Evaluation Clinical Trial, The Journal of Clinical Endocrinology & Metabolism, Volume 86, Issue 3, 1 March 2001, Pages 1212–1221, https://doi.org/10.1210/jcem.86.3.7327 | ||
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| + | Price, M., Román, V., Wadman, M., Mlot, C., Schembri, F., & Servick, K. (2018, September 20). Skeletal stem cells found in humans for first time, promising new treatments for fractures and osteoporosis. Retrieved from https://www.sciencemag.org/news/2018/09/skeletal-stem-cells-found-humans-first-time-promising-new-treatments-fractures-and | ||
| Public Health Agency of Canada. (2018, January 12). Osteoporosis. Retrieved September 20, 2018, from https://www.canada.ca/en/public-health/services/chronic-diseases/osteoporosis.html | Public Health Agency of Canada. (2018, January 12). Osteoporosis. Retrieved September 20, 2018, from https://www.canada.ca/en/public-health/services/chronic-diseases/osteoporosis.html | ||
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| Rachner, T. D., Khosla, S., & Hofbauer, L. C. (2011). Osteoporosis: now and the future. The Lancet, 377(9773), 1276-1287. | Rachner, T. D., Khosla, S., & Hofbauer, L. C. (2011). Osteoporosis: now and the future. The Lancet, 377(9773), 1276-1287. | ||
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| + | Return2Health. (2018). Osteoporosis: How dense are you?. [online] Available at: http://www.return2health.net/articles/osteoporosis-how-dense-are-you/ [Accessed 29 Sep. 2018]. | ||
| Spine Fractures. (n.d.). Retrieved from https://osteoporosis.ca/bone-health-osteoporosis/living-with-the-disease/after-the-fracture/what-to-expect-from-some-specific-types-of-fracture/spine-fractures/ | Spine Fractures. (n.d.). Retrieved from https://osteoporosis.ca/bone-health-osteoporosis/living-with-the-disease/after-the-fracture/what-to-expect-from-some-specific-types-of-fracture/spine-fractures/ | ||
| Sozen, T., Ozisik, L. and Calik Basaran, N. (2017). An overview and management of osteoporosis. European Journal of Rheumatology, 4(1), pp.46-56. | Sozen, T., Ozisik, L. and Calik Basaran, N. (2017). An overview and management of osteoporosis. European Journal of Rheumatology, 4(1), pp.46-56. | ||
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| + | University of Stanford. (2018, August 30). Gene Screen Predicts Bone Fracture Risk. Retrieved from https://www.technologynetworks.com/genomics/news/gene-screen-predicts-bone-fracture-risk-308282 | ||
| Wark, J. D. (1993). 8 Osteoporosis: pathogenesis, diagnosis, prevention and management. Baillière's clinical endocrinology and metabolism, 7(1), 151-181. | Wark, J. D. (1993). 8 Osteoporosis: pathogenesis, diagnosis, prevention and management. Baillière's clinical endocrinology and metabolism, 7(1), 151-181. | ||
