Table 3.
Factors associated with requiring an assistive device for ambulation versus walking without assistance in 114 patients undergoing total knee replacements one year after the last surgical procedure.
| Variable | Univariate Analysis | Multivariate Analysis | |||
|---|---|---|---|---|---|
| Walking without Assistance (n = 81) | Walking with Crutches (n = 33) | p-Value | OR (95% CI) * | p-Value | |
| Age, years—mean (standard deviation) | 74 (5.8) | 75 (5.5) | 0.228 | 1.07 (0.98–1.16) | 0.120 |
| Female gender—no. (%) | 48 (59.3) | 24 (72.7) | 0.176 | 1.90 (0.75–4.81) | 0.175 |
| Charlson score ≥ 2—no. (%) | 8 (9.9) | 7 (21.2) | 0.129 | 3.94 (1.15–13.53) | 0.029 |
| ASA > 2—no. (%) | 23 (28.4) | 12 (36.4) | 0.403 | ||
| Revision arthroplasty (versus primary arthroplasty)—no. (%) | 11 (13.6) | 4 (12.1) | 1 | 0.906 (0.25–3.28) | 0.881 |
| Urgent surgery (versus elective surgery)—no. (%) | 2 (2.5) | 0 (0) | 1 | - | - |
| Postoperative prosthetic joint infection—no. (%) | 22 (27.2) | 16 (48.5) | 0.028 | 3.10 (1.26–7.57) | 0.014 |
ASA = American Society of Anesthesiologists; CI = confidence interval; OR = odds ratio. * Results in bold refer to those that are statistically significant.