Disorders of motor activity Flashcards
What is the most common form of arthritis?
Osteoarthritis. Prevalence increase w age. 1/3 adults > 60 demonstrate radiographic OA
What is the typical history of OA?
- joint pain worse w activity
- morning stiffness lasting no more than 30m
- stiffness after periods of immobility
- impairment or function
What is found on PE in OA?
- bony swelling
- crepitus
- jointline tenderness
- limitation of joint mobility
- joint instability
- periarticular muscle atrophy
What is primary OA?
Idiopathic, occurs in previously undamaged joints. Can be classified as localized (1-2 sites) or generalized (3 or more sites)
What is secondary OA?
Ass w well -recognized causes
- Inflammatory arthritis eg RA, psoriatic
- Crystal arthropathy eg gout, calcium pyrophosphate deposition disease
- septic arthritis /TB
- prior joint trauma or surgery
- endocrinopathy eg acromegaly, hyperparathyroidism
- metabolic disorder eg hemachromatosis, ochronosis
- neuropathic arthropathy eg DM, tabes dorsalis
- prior bone disease eg Pagets, osteonecrosis
- hemophilia
- cong. / development eg dysplasia, slipped femoral epiphysis, Marfan sd
What are the risk factors for OA?
- Older age
- Obesity
- female gender
- joints malalignment
- occupational activity, kneeling, stooping
- presence of hand OA
What is the clinical ACR clinical radiographic DX criteria for OA in the knee
Knee pain + osteophyte + at least 1 of the following
- age > 50 y
- stiffness < 30 min
- crepitus
ACR criteria for OA in hip?
Hip pain and at least 2 of the following
- ESR < 20 mm/h
- radiographic femoral or acetabular osteophytes
- radiographic joint space narrowing, superior / axial / and or medial
What is the incidence of RA?
Peak btw 35 - 50, but can happen from 20 y. Higher incidence in women, 3,6% lifetime risk ( 1,7% in men)
What are the systemic features of RA?
- Fatigue
- Malaise
- Weight loss
- Weakness
- Low grade fever
What are the ACR/ EULAR criteria for RA
- Definite RA is based on the confirmed presence of synovitis in at least 1 joint, absence of an alternative dx better explaining the synovitis, and achievement of a total score of 6 or greater of possible 10
How are the points counted in ACR/EULAR criteria for RA w joint involvement?
Joint involvement
- 0pt for 1 large joint
- 1 pt for 2-10 large joints
- 2 pts for 1-3 small joints
- 3 pts for 4-10 small joints
- 5 pts for > 10 joints, at leas 1 small
How are the points counted in ACR/EULAR criteria for RA w serology?
0 pt w RF and ACPA
2 pt w RF or ACPA positive at low titer < 3 times ULN
3 pts w ACPA positive at high titer, > 3 ULN (upper limits than normal)
ACPA = anti citrullinated peptides antibody
How are the points counted in ACR/EULAR criteria for RA w duration of synovitis and acute phase reactants?
Duration:
0pt < 6w
1 pt > 6w
Acute phase reactants
0 puts if normal ESR/CRP
1 pt if abnormal ESR/CRP
What is ankylosing spondylitis? (AS)
Bekhterevs sykdom