Table II.
Comparison of two groups in demographic analysis and final results.
| Variables | Group A | Group B | p-value |
|---|---|---|---|
| Number of patients | 21 | 14 | |
| Mean age, yrs (SD) | 44.0 (11.8) | 48.6 (11.3) | 0.268* |
| Sex, n | 0.369† | ||
| Female | 2 | 3 | |
| Male | 19 | 11 | |
| Schatzker fracture types, n | 0.603‡ | ||
| IV | 1 | 1 | |
| V | 14 | 10 | |
| VI | 6 | 3 | |
| Cierny-Mader type, n | 0.664† | ||
| A | 3 | 3 | |
| B | 18 | 11 | |
| Mean previous operations, n (SD) | 2.2 (1.4) | 1.9 (0.7) | 0.343* |
| Mean duration of infection, wks (SD) | 61.2 (122.5) | 49.8 (59.5) | 0.748* |
| Bacterial strains (S. aureus), n | 9 | 9 | 0.305† |
| Mean functional recovery score (SD) | |||
| LEFS | 65.7 (10.8) | 68.9 (9.7) | 0.376* |
| HSS | 82.6 (12.4) | 86.0 (10.8) | 0.404* |
| Median bone healing time, wks (IQR) | |||
| Radiological healing | 16.0 (13.0 to 22.0) | N/A | N/A |
| Clinical healing | 21.0 (16.0 to 27.0) | 8.0 (8.0 to 12.0) | < 0.001§ |
Group B received no reconstruction and as such had no radiological healing time.
*
Independent-samples t-test.
†
Fisher’s exact test.
‡
Chi-squared test (linear by linear).
§
Log-rank test.
HSS, Hospital for Special Surgery Knee Score; IQR, interquartile range; LEFS, Lower Extremity Functional Scale; N/A, not applicable; S. aureus, Staphylococcus aureus; SD, standard deviation.