Table 2.
Results of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)—preoperative (t0), four to six weeks (t1) as well as three months (t2) postoperatively.
| WOMAC (n = 101) | Statistical Difference (p-Value) |
||||
|---|---|---|---|---|---|
| (Mean ± SD) | t0 vs. T1 | t0 vs. t2 | t1 vs. t2 | ||
| Pain—walking in the plain (0–4) |
PRE-OP | 2.8 ± 0.8 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 0.9 ± 0.8 | ||||
| 3 m POST-OP | 0.5 ± 0.7 | ||||
| Pain—descending stairs (0–4) |
PRE-OP | 2.9 ± 0.9 | <0.001 | <0.001 | 0.001 |
| 4–6 w POST-OP | 0.9 ± 0.9 | ||||
| 3 m POST-OP | 0.6 ± 0.8 | ||||
| Pain—sleeping (0–4) |
PRE-OP | 2.0 ± 1.2 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 0.8 ± 0.7 | ||||
| 3 m POST-OP | 0.4 ± 0.7 | ||||
| Pain—sitting/laying (0–4) |
PRE-OP | 2.1 ± 1.1 | <0.001 | <0.001 | 0.001 |
| 4–6 w POST-OP | 0.8 ± 0.7 | ||||
| 3 m POST-OP | 0.5 ± 0.8 | ||||
| Pain—standing upright (0–4) |
PRE-OP | 2.4 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 0.8 ± 0.8 | ||||
| 3 m POST-OP | 0.5 ± 0.8 | ||||
| Pain—need for medication (0–4) |
PRE-OP | 2.0 ± 1.4 | 0.99 | <0.001 | <0.001 |
| 4–6 w POST-OP | 2.0 ± 0.9 | ||||
| 3 m POST-OP | 0.5 ± 0.8 | ||||
| Stiffness—morning (0–4) |
PRE-OP | 2.5 ± 1.1 | <0.001 | <0.001 | 0.002 |
| 4–6 w POST-OP | 1.2 ± 0.9 | ||||
| 3 m POST-OP | 0.9 ± 0.9 | ||||
| Stiffness—during the course of day (0–4) |
PRE-OP | 2.5 ± 1.0 | <0.001 | <0.001 | 0.09 |
| 4–6 w POST-OP | 1.0 ± 0.8 | ||||
| 3 m POST-OP | 0.8 ± 0.8 | ||||
| Problems—descending stairs (0–4) |
PRE-OP | 2.6 ± 1.1 | <0.001 | <0.001 | 0.003 |
| 4–6 w POST-OP | 1.0 ± 1.0 | ||||
| 3 m POST-OP | 0.6 ± 0.9 | ||||
| Problems—climbing stairs (0–4) |
PRE-OP | 2.8 ± 0.9 | <0.001 | <0.001 | 0.005 |
| 4–6 w POST-OP | 1.1 ± 1.0 | ||||
| 3 m POST-OP | 0.7 ± 0.9 | ||||
| Problems—getting up from chair (0–4) |
PRE-OP | 2.8 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 1.0 ± 0.9 | ||||
| 3 m POST-OP | 0.6 ± 0.8 | ||||
| Problems—standing (0–4) |
PRE-OP | 2.3 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 1.0 ± 0.8 | ||||
| 3 m POST-OP | 0.5 ± 0.8 | ||||
| Problems—bending over (0–4) |
PRE-OP | 2.8 ± 1.1 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 1.8 ± 1.3 | ||||
| 3 m POST-OP | 1.1 ± 1.1 | ||||
| Problems—walking in plain (0–4) |
PRE-OP | 2.5 ± 0.8 | <0.001 | <0.001 | 0.12 |
| 4–6 w POST-OP | 0.6 ± 0.7 | ||||
| 3 m POST-OP | 0.4 ± 0.7 | ||||
| Problems—getting in/out of car (0–4) |
PRE-OP | 2.9 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 1.5 ± 1.0 | ||||
| 3 m POST-OP | 0.8 ± 0.9 | ||||
| Problems—shopping (0–4) |
PRE-OP | 2.6 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 1.3 ± 1.2 | ||||
| 3 m POST-OP | 0.6 ± 0.9 | ||||
| Problems—putting socks on (0–4) |
PRE-OP | 3.0 ± 1.1 | <0.001 | <0.001 | 0.003 |
| 4–6 w POST-OP | 1.7 ± 1.3 | ||||
| 3 m POST-OP | 1.2 ± 1.1 | ||||
| Problems—getting up from bed (0–4) |
PRE-OP | 2.4 ± 1.0 | <0.001 | <0.001 | 0.003 |
| 4–6 w POST-OP | 1.0 ± 0.9 | ||||
| 3 m POST-OP | 0.7 ± 0.8 | ||||
| Problems—putting socks off (0–4) |
PRE-OP | 2.8 ± 1.2 | <0.001 | <0.001 | 0.004 |
| 4–6 w POST-OP | 1.3 ± 1.2 | ||||
| 3 m POST-OP | 0.8 ± 1.0 | ||||
| Problems—laying in bed (0–4) |
PRE-OP | 2.0 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 0.7 ± 0.8 | ||||
| 3 m POST-OP | 0.3 ± 0.7 | ||||
| Problems—getting in/out of shower/bathtub (0–4) |
PRE-OP | 2.5 ± 1.4 | <0.001 | <0.001 | 0.03 |
| 4–6 w POST-OP | 0.9 ± 1.1 | ||||
| 3 m POST-OP | 0.6 ± 0.9 | ||||
| Problems—sitting (0–4) |
PRE-OP | 1.9 ± 1.1 | <0.001 | <0.001 | 0.03 |
| 4–6 w POST-OP | 0.6 ± 0.7 | ||||
| 3 m POST-OP | 0.4 ± 0.6 | ||||
| Problems—getting of toilet (0–4) |
PRE-OP | 2.3 ± 1.0 | <0.001 | <0.001 | 0.02 |
| 4–6 w POST-OP | 0.7 ± 0.8 | ||||
| 3 m POST-OP | 0.5 ± 0.7 | ||||
| Problems—doing heavy housework (0–4) |
PRE-OP | 3.0 ± 1.0 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 2.1 ± 1.3 | ||||
| 3 m POST-OP | 1.3 ± 1.2 | ||||
| Problems—doing light housework (0–4) |
PRE-OP | 2.2 ± 0.9 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 1.0 ± 1.0 | ||||
| 3 m POST-OP | 0.5 ± 0.9 | ||||
| Total result WOMAC (0–100) |
PRE-OP | 62.6 ± 18.6 | <0.001 | <0.001 | <0.001 |
| 4–6 w POST-OP | 27.1 ± 16.1 | ||||
| 3 m POST-OP | 16.2 ± 15.2 | ||||