Abstract
BACKGROUND: Knee osteoarthritis caused by endemic skeletal fluorosis is a complex and chronic systemic disease,which can cause the damage of surrounding bone and sclerotin of knee joint.
OBJECTIVE: To investigate the effect of total knee arthroplasty (TKA) in the treatment of knee osteoarthritis caused by endemic skeletal fluorosis.
METHODS: Nine patients suffered from knee osteoarthritis caused by skeletal fluorosis that diagnosed by local epidemiology,dental fluorosis,clinical and imaging from March 2010 to October 2011 and all the patients were treated with bilateral TKA. The clinical efficacy was evaluated according to the knee scoring system of United States Hospital for Special Surgery before arthroplasty and final follow-up after arthroplasty.
RESULTS AND CONCLUSION: Score results showed that 5 knees were excellent, 3 knees were good and 1 knee was fair after knee arthroplasty. All patients have been improved in pain, function and range of motion. TKA is an effective method for the treatment of knee osteoarthritis caused by skeletal fluorosis.
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Dorsal spondylolisthesis secondary to chronic fluoride intoxication: one case report
Fluorosis is a disease caused by an excess of fluoride in the water, it is endemic in many parts of India,Afghanistan; Irak, Iran and North Africa. Fluoride is retained in the bones and induces hardening of all the bones, including the spine, hypertrophy of the joints and bones is seen,
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Paleopathology of skeletal fluorosis
Skeletal fluorosis is one of a range of conditions causing excessive ossification and joint ankylosis in skeletons. It is rarely considered, however, in differential diagnoses of palaeopathological lesions. This paper considers the identification of skeletal fluorosis in a skeletal sample from the island of Bahrain, Arabian Gulf, dating to ca.
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Industrial skeletal fluorosis: preliminary report on 61 cases from aluminum smelter
SchIegel presented data on 61 cases of skeletal f1uorosis among workers of a Swiss aluminum factory. Of 350 cases ofìndustrial fluorosis reported in the world's literature, approximately 20 occcured in the smelting area of the aluminum industry. For processing aluminum from clay, cryolite (NaAlF6) is used as a fluxing agent.
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The imaging value of bone turnover of skeletal fluorosis
Objective To probe into X-ray, CT and MRI manifestations of bone turnover in skeletal fluorosis and diagnostic values of different examination technologies. Methods Comparisons and analyses were made on the imaging manifestations of bone turnover in 28 reported cases with skeletal fluorosis. Results All 28 cases had dental fluorosis of
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Specific features of occupational fluorosis
Analysis of X-ray images of 397 patients suffering from fluorosis showed that 94.0% of cases exhibit degenerative-dystrophic impairments of the lumbar spine; 65.0% of cases – calcification of the anterior longitudinal ligament; and 91.0% of cases – impairments in the form of epicondylitis, periarthrosis, and deforming arthrosis. Impairment of the
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"Pre-Skeletal" Fluorosis
As demonstrated by the studies below, skeletal fluorosis may produce adverse symptoms, including arthritic pains, clinical osteoarthritis, gastrointestinal disturbances, and bone fragility, before the classic bone change of fluorosis (i.e., osteosclerosis in the spine and pelvis) is detectable by x-ray. Relying on x-rays, therefore, to diagnosis skeletal fluorosis will invariably fail to protect those individuals who are suffering from the pre-skeletal phase of the disease. Moreover, some individuals with clinical skeletal fluorosis will not develop an increase in bone density, let alone osteosclerosis, of the spine. Thus, relying on unusual increases in spinal bone density will under-detect the rate of skeletal fluoride poisoning in a population.
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Fluoride & Osteoarthritis
While the osteoarthritic effects that occurred from fluoride exposure were once considered to be limited to those with skeletal fluorosis, recent research shows that fluoride can cause osteoarthritis in the absence of traditionally defined fluorosis. Conventional methods used for detecting skeletal fluorosis, therefore, will fail to detect the full range of people suffering from fluoride-induced osteoarthritis.
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Skeletal Fluorosis: The Misdiagnosis Problem
It is a virtual certainty that there are individuals in the general population unknowingly suffering from some form of skeletal fluorosis as a result of a doctor's failure to consider fluoride as a cause of their symptoms. Proof that this is the case can be found in the following case reports of skeletal fluorosis written by doctors in the U.S. and other western countries. As can be seen, a consistent feature of these reports is that fluorosis patients--even those with crippling skeletal fluorosis--are misdiagnosed for years by multiple teams of doctors who routinely fail to consider fluoride as a possible cause of their disease.
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Skeletal Fluorosis & Individual Variability
One of the common fallacies in the research on skeletal fluorosis is the notion that there is a uniform level of fluoride that is safe for everyone in the population. These "safety thresholds" have been expressed in terms of (a) bone fluoride content, (b) daily dose, (c) water fluoride level, (d) urinary fluoride level, and (e) blood fluoride level. The central fallacy with each of these alleged safety thresholds, however, is that they ignore the wide range of individual susceptibility in how people respond to toxic substances, including fluoride.
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Fluoride Magnifies Impact of Repetitive Stress on Joints
Research has repeatedly found that fluoride's effect on the skeleton is most pronounced in the bones and joints that undergo the greatest strain. Indeed, both the symptoms of fluorosis (i.e., joint pain and stiffness) as well as the radiological findings (e.g., exostoses, interosseuous membrane calcification) have been found to occur earliest, and most severely, in the joints
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