Table 2

Sequelae for hip and knee OA, associated disability weights and severity distribution, GBD 2010 study

SequelaLay descriptionDisability weight (95% UI)Severity distribution (95% UI)
Mild OA (WOMAC 0–5)Has pain in the leg, which causes some difficulty running, walking long distances and getting up and down0.023 (0.013–0.039)HI: 71% (56–83%)
LMIC: 47% (42–52%)
Moderate OA (WOMAC >5–13)Has moderate pain in the leg, which makes the person limp, and causes some difficulty walking, standing, lifting and carrying heavy things, getting up and down and sleeping0.079 (0. 053–0.119)HI: 27% (16–42%)
LMIC: 36% (31–41%)
Severe OA (WOMAC >13–20)Has severe pain in the leg, which makes the person limp and causes a lot of difficulty walking, standing, lifting and carrying heavy things, getting up and down, and sleeping0.171 (0.117–0.240)HI: 2% (1–3%)
LMIC: 17% (14–21%)
Average disability weightHI: 0.041 (0.026–0.060)
LMIC: 0.069 (0.047–0.097)
  • WOMAC pain score range 0 (no pain)–20 (extreme pain).

  • GBD, Global Burden of Disease, HI, high-income countries; LMIC, low- and middle-income countries; OA, osteoarthritis; UI, uncertainty interval; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.