Multivariable model of the hip pain subgroup for the association with total hip arthroplasty (THA)a
| β | OR (95% CI)b | P-value | |
|---|---|---|---|
| Painful active hip internal rotation | 1.65 | 5.2 (2.3 to 11.8) | <0.01 |
| ROM hip flexion ≤115° | 0.99 | 2.7 (1.2 to 6.2) | 0.02 |
| K/L score 1 (vs. 0) | 1.22 | 3.4 (1.2 to 9.4) | 0.02 |
| JSN on faux profile radiograph | 2.53 | 12.6 (4.8 to 33.2) | <0.01 |
| Dysplasia (Wiberg angle <25°) | 2.10 | 8.2 (2.6 to 25.5) | <0.01 |
| Femoral subchondral sclerosis | 2.18 | 8.8 (2.9 to 26.7) | <0.01 |
↵a Model obtained with generalised estimating equations (GEE). An OR >1 indicates an increased risk for undergoing TKA (total knee arthroplasty).
↵b OR adjusted for age and sex. β = regression coefficient (beta). JSN = joint space narrowing. K/L = Kellgren and Lawrence. OR = odds ratio. ROM = range of motion.