osteoarthritis Flashcards
what is the primary aetiology of osteoarthritis? (2)
- age
- gender
when does osteoarthritis incidence increase?
- increases after menopause
how does culture act as a primary factor in osteoarthritis?
- cultural norms
- genes
what are the six secondary aetiology factors of osteoarthritis?
- obesity
- bone density
- joint injury
- development disorders
- femoral acetabular impingement
- lifestyle
does obesity always act as secondary factor to osteoarthritis?
- knee yes
- hip not proven
how does bone density link to osteoarthritis?
- people with known osteoporosis have lower incidence of hip OA
what is one of the strongest risk factors for developing OA?
- joint injury
what development disorders act as secondary factors of OA? (3)
- perthes disease
- development dysplasia
- slipped capital femoral epiphysis
how does lifestyle contribute to osteoarthritis?
- repetitive excessive loading thought to increase OA but regular recreational activities does not
are X-rays used in diagnosis of osteoarthritis? what does this include?
- MRI and CT scans
- can detect OA but rarely used
what are the main four physical symptoms of osteoarthritis?
- pain and stiffness
- characteristic morning stiffness
- restricted ROM
- decreased functional ability
what are the symptoms described as?
- generally getting worse
what is the onset of symptoms in people with OA?
- idiographic onset
what do osteoarthritic individuals often experience on a day to day basis?
- good and bad days
what may happen to leg length due to osteoarthritis?
- leg length discrepancy due to loss of joint space
what is osteoarthritis characterised by?
- characterised by flare- up/ remissions so symptoms will vary in severity dependably
what are the 6 main signs of osteoarthritis?
- age
- loss of ROM
- swollen joints
- joint deformity
- decreased functional ability
- bony lumps and boggy swelling
what does ACR stand for?
- American college of rheumatology
what is the ACR algorithm?
- clinical classification criteria for osteoarthritis of the hip
- without an x-ray
what are the clinical ACR guidelines for hip OA?
- pain and internal rotation <15 and flexion of hip <115 or internal rotation >15, pain at internal rotation, stiffness <60 min and age > 50 years
why are x-rays designated as gold standard by WHO?
+ cheap
+ instant
+ easily intepreted
what are the three main x-ray based grading systems?
- Kellgren- Lawrence system
- croft modification of the kellgren- Lawrence system
- croft minimal joint space grading system
what is the most widely used X-ray grading scale of OA?
- Kellgren- Lawrence system
how many grades are there in the Kellgren- Lawrence system?
- grade 0 to grade 4