OA- Knee OA Information

Question 1

Clinical features of knee OA

Answer 1

Joint pain
Morning stiffness
Joint instability or buckling, especially in elderly patients
Loss of function and decreased ROM
Occasional synovitis

Question 2

Knee OA pain

Answer 2

Usually lasts <30 minutes and goes away with movement

Question 3

Clinical classification of knee OA

Answer 3

Knee pain and at least 3/6 of the following:

Age >50
Stiffness lasting <30 minutes
Crepitus
Bony tenderness
Bony enlargement
No warmth to the touch

Question 4

Clinical and laboratory classification of knee OA

Answer 4

Knee pain and at least 5/9 of the following:

Same features as clinical classification, plus lab classification features:

ESR <40mm/hr
RF <1:40
Synovial fluid is clear, viscous, or WBC <2,000/mm3

Question 5

Radiographic classification of knee OA

Answer 5

Pain at at least 1/3 of the following:

Age >50
Stiffness <30 minutes
Crepitus

AND osteophytes

Question 6

Knee OA classification that’s the most sensitive

Answer 6

Clinical classification: most sensitive, least specific

Question 7

Knee OA classification that’s the most specific

Answer 7

Radiographic: most specific, least sensitive

Question 8

Knee OA treatment: strongly recommended nonpharm treatment

Answer 8

exercise, self-efficacy and self-management programs, weight loss (if overweight), tai-chi, cane, tibiofemoral brace (TF) for TF OA

Question 9

Knee OA treatment: conditionally recommended nonpharm treatment

Answer 9

heat, therapeutic cooling, CBT, acupuncture, kinesiotaping, balance training/yoga, patellofemoral brace (PF) for PF OA, radiofrequency ablation

Question 10

Knee OA treatment: strongly recommended pharm treatment

Answer 10

PO and topical NSAIDs, intra-articular steroids guided by imaging

Question 11

Knee OA treatment: conditionally recommended pharm treatment

Answer 11

APAP, tramadol, duloxetine