KOOS-PS · 3 minutes
Knee osteoarthritis function (KOOS-PS)
Seven everyday activities — rising from bed, putting on socks, getting up from a chair, bending, twisting, kneeling, squatting. Result tells you whether structural treatment (injection therapy, BMAC, knee replacement) is worth evaluating.
Difficulty rising from bed
Educational tool — not a diagnosis. KOOS-PS, Perruccio et al. 2008. Validated short form of the KOOS used in joint replacement registries internationally.
Frequently asked
Plain-language answers about knee oa, this screener, and what evaluation costs at a Class A hospital in China.
- When should I consider knee replacement?
- Conventional indication: persistent moderate-to-severe pain plus functional limitation despite 3+ months of conservative care, plus radiographic OA. KOOS-PS scores tracking high (poor function) for over 3 months alongside imaging findings is a typical surgical-eligibility profile.
- What does knee replacement cost in China?
- Total knee arthroplasty at a Class A orthopaedic centre with international-brand implant (Zimmer, Stryker, DePuy): typically $9,500–14,000 all-in vs $35,000–60,000 US private rates. Bilateral simultaneous adds modest additional cost.
- What about stem cell or BMAC for knees?
- Autologous BMAC and PRP have growing evidence for early-stage knee OA. Class A sports-medicine departments offer it with realistic outcome expectations — typically $1,400–2,800 per knee. It is not a replacement for arthroplasty in advanced OA.
About this screener
KOOS-PS, Perruccio et al. 2008. Validated short form of the KOOS used in joint replacement registries internationally.
What this screener covers
- Primary osteoarthritis of knee(ICD-10 M17.1)
Medical review
Reviewed by Panda Touring Care medical team (Orthopaedics coordinator review) · last reviewed 2025-04-01
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