Table 5.
Results of adjusted linear regression models to assess the association between grade of radiating pain with activity and pre- and postoperative WOMAC and SF-36 scores
| Radiating pain with activity | WOMAC pain* | WOMAC function* | SF-36 PCS | SF-36 MCS | ||||
|---|---|---|---|---|---|---|---|---|
| Pre-TKA | 2 years post-TKA | Pre-TKA | 2 years post-TKA | Pre-TKA | 2 years post-TKA | Pre-TKA | 2 years post-TKA | |
| Mild (VAS 0–3) | – | – | – | – | – | – | – | – |
| Moderate (VAS 4–6)† | −2.23 (−10.38 to 5.92) | −4.19 (−11.18 to 2.79) | −8.39 (−15.57 to −1.20) | −4.67 (−11.68 to 2.35) | −2.10 (−4.74 to 0.46) | −2.83 (−5.86 to 1.09) | −1.63 (−5.67 to 2.41) | −0.14 (−4.56 to 4.27) |
| Severe (VAS 7–10)† | −9.69 (−18.56 to −0.81) | −4.65 (−13.33 to 4.04) | −13.61 (−21.24 to −5.99) | −5.42 (−14.14 to 3.30) | −3.12 (−5.58 to −0.37) | −5.41 (−9.77 to −1.05) | −1.94 (−6.35 to 2.46) | −0.58 (−4.49 to 3.90) |
Data are presented as adjusted regression coefficients with 95% confidence intervals in parentheses. Regression coefficients and 95% confidence intervals with statistical significance (p < 0.05) are in bold; * the original WOMAC scores were converted to percentage scores on a worst-to-best scale; †all values are in reference to mild (VAS 0–3) scores; PCS = physical component summary; MCS = mental component summary; VAS = visual analog scale.