Bones Flashcards
(121 cards)
What happens to bone mass and bone mineralisation in osteoporosis?
Bone mass decreases
Bone mineralisation stays the same
What is osteoporosis characterised by?
Low trauma fragility fractures
Family history is important for what kind of fracture?
Hip fracture
Risk factors for osteoporosis?
Woman Menopause Early menopause Low calcium diet especially teenage years Lack of mobility FH of hip fracture
2 causes of primary osteoporosis?
Post-menopausal lack of oestrogen
Lack of mobility
Pneumonic RACISM for secondary causes of osteoporosis?
Rheumatoid arthritis Alcohol Corticosteroids Immobility Smoking Multiple myeloma
% of fractures in women over the age of 45 that are caused by osteoporosis?
70%
4 most common sites for fractures?
Proximal humerus
Proximal femur
Colle’s fracture
Vertebral fracture
What types of things can result from multiple vertebral fractures?
Chronic back pain Reflux oesphagitis Kyphosis Loss of height Abdominal distension Neck pain Depression
What is the 1 year mortality after a hip fracture?
25%
In osteoporosis how will a bone profile be affected?
Calcium normal
Phosphate normal
ALP normal
How are vertebral fractures identified on xray
with more than a 20% loss in vertebral height
What percentage loss in height of the vertebrae is classified as a crush fracture?
50%
Very advanced vertebral fractures are known as what?
Vertebra plana
What scan do you perform to assess osteoporosis?
DEXA scan
What is a T score on a DEXA scan and what does it symbolise?
T score is a measure of the bone mineral density as standard deviations relative to the peak bone mass
What is the T score of normal bone density?
1
What is the t score of osteopenia?
-1 to -1.5
What is the T score of osteoporosis?
-2.5 or more
What is the difference between osteoporosis and established osteoporosis?
They will both have a T score below -2.5 but the established osteoporosis will also have fractures
How can you prevent osteoporosis?
1g of Calcium per day in diet
Weight baring exercises in adolescence
3 supplements given to elderly patients with a fracture?
1g Calcium
800 IU of Vitamin D3
Oral bisphosphonates
What do you have to tell a patient about taking bisphosphonates and the side effect?
Need to be taken fasting
Side effect of reflux oesophagitis if not taking standing with a glass of water
Name 2 commonly used bisphosphonates
Alendronic acid
Risedronate