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is Osteoporosis |
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Diagnosing Osteoporosis
"... an accurate diagnosis, which is relatively simple,
can save people from a lot of suffering, fractures and
emotional damage."
Carmen Sanchez, Spain, osteoporosis patient
People with osteoporosis suffer from a reduction in their
bone mass and bone quality- put simply, their bones become
fragile, leading to an increased risk of fractures. Bone
density loss is usually gradual and without noticeable
symptoms. The only reliable way to determine loss of bone mass
is to have a bone mineral density (BMD) test. Click
Here for BMD Test.
Who should be tested?
Strong risk factors for osteoporosis include:
- Oestrogen deficiency:
- Early menopause (age <45 years)
- Absence or cessation of menstrual periods
(amenorrhoea >1 year)
- Primary or secondary hypogonadism in both genders
- Prolonged corticosteroid therapy
(prednisolone, or
equivalent, 7.5 mg or more daily with an expected use
of 3 months or more)
- Maternal family history of hip fracture
- Low body mass index (<19 kg/m2)
- Chronic disorders associated with osteoporosis: anorexia
nervosa, malabsorption syndromes including chronic liver
disease and inflammatory bowel disease, primary
hyperparathyroidism, post-transplantation, chronic renal
failure, hyperthyroidism, prolonged immobilisation,
Cushing's syndrome
- Previous fragility fracture, particularly of the hip,
spine or wrist
- Loss of height, thoracic kyphosis (widows hump)
Other risk factors:
- Female (women are more at risk than men)
- Asian or Caucasian
- Poor diet low in calcium
- Lack of exercise
- Smoking
- Regular and excessive alcohol consumption
People with a strong risk of osteoporosis are advised to
consult their doctors for a bone mineral density test. In the
USA, for example, guidelines recommend that all women aged 65
and up should have a BMD test and that postmenopausal women
under age 65 who have one or more risk factors (in addition to
being postmenopausal and female) should have a BMD test.
To check your risk Take
the One-Minute Risk test
How osteoporosis is diagnosed
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The most common
diagnostic tool is a bone mineral density (BMD) test.
This is a painless and noninvasive scan which, depending
on the technology, measures bone density in the hip,
spine, wrist, heel or hand.
According to World Health
Organization (WHO) guidelines, a BMD score in a
postmenopausal Caucasian woman that is more than 2.5
standard deviations below the average for the young
healthy female population implies a diagnosis of
osteoporosis. For every standard deviation (SD) below
peak bone mineral density fracture risk increases by 50%
to 100%. The same BMD values are being provisionally
used for men because currently data on BMD and fracture
in men is scarce. |
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Summary of WHO definitions of
osteoporosis
based on bone density levels*:
Normal: BMD is within +1 or -1 SD
of the young adult mean.
 Osteopenia (low bone
mass): BMD is between -1 and -2.5
standard deviations below young adult
mean.
 Osteoporosis: BMD is -2.5
SD or more than the young adult mean.
 Severe (established)
osteoporosis: BMD is more than -2.5 SD
and one or more osteoporotic fractures have
occurred.
*based on DXA measurement at hip
or
spine |
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Methods of Diagnosis
A variety of methods is available to assess bone density.
All are painless and noninvasive. The most common types of
tests are listed below:
DXA (Dual Energy X-Ray
Absorptiometry) DXA is
a special low radiation X-ray capable of detecting quite low
percentages of bone loss. DXA scans are the most commonly used
method of BMD measurement. They are used to measure spine and
hip bone densities.
- pDXA
(Peripheral Dual Energy X-ray
Absorptiometry) pDXA measures the forearm, finger and
heel
- SXA
(Single-Energy X-Ray
Absorptiometry) SXA measures the heel
QCT (Quantitative Computed
Tomography) QCT
scans the trabecular bones of the lower spine - these are
bones that change as you grow older. pQCT measures the
forearm.
QUS (Quantitative Ultrasound) QUS uses sound
waves to measure density at the heel, shin and finger.
The importance of early diagnosis
Through early detection, people with osteopenia (low bone
mass) or osteoporosis, can take action to stop the progressive
loss of bone mass. By making positive lifestyle changes (see
prevention) and following appropriate treatment
strategies in consultation with a doctor (see
treatment), osteoporotic fractures can be
prevented.
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Common
Osteoporotic Fractures
Around – Wrist, Hip, Pelvis,
Spine
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Orthopaedic
Management
1.
Plasters, Rest, Splints
2.
Open Reductions & Internal Fixations – Plates,
Screws, Dynamic Hip Screw (DHS, DCS), Moss Miami, Spine
Fixation, External Fixators, Pedicle Screws, Sometimes Joint
Replacement.
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