TABLE 1.
Patient Characteristicsa
| Group 1 (n = 18) | Group 2 (n = 11) | P | |
|---|---|---|---|
| Age at surgery, y | 45.9 (21-73) | 65.8 (46-74) | .021b |
| Sex, male/female, n (%) | 2/16 (11/89) | 3/8 (27/73) | .620c |
| Side affected, right/left, n (%) | 7/11 (39/61) | 7/4 (64/36) | .109c |
| Follow-up period, mo | 56 (24-145) | 48 (25-128) | .081b |
| Osteonecrosis, n | 18 | 11 | |
| Recipient site, n | .005d | ||
| Medial femoral condyle | 9 | 11 | |
| Lateral femoral condyle | 9 | 0 | |
| Concomitant surgical procedure, n | |||
| High tibial osteotomy | 3 | 0 | |
| Meniscectomy | 0 | 0 | |
| Ligament reconstruction | 0 | 0 | |
| Lesion size, mm2 | 685 (420-1125) | 230 (110-360) | <.01b |
aData are shown as mean (range) unless otherwise indicated.
bP value by Mann-Whitney U test.
cP value by Fisher exact test.
dP value by chi-square test.