TABLE 4.
Talar and Tibial OCL Characteristics by Occurrence of Kissing Lesionsa
| Talar OCL | Tibial OCL | |||||||
|---|---|---|---|---|---|---|---|---|
| Nonkissing (n = 17) | Kissing (n = 9) | P | χ2 | Nonkissing (n = 17) | Kissing (n = 9) | P | χ2 | |
| Lesion size, mm2 | 103.4 ± 73.2 | 88.1 ± 52.4 | .545 | 70.6 ± 65.2 | 50.4 ± 43.1 | .355 | ||
| Location of lesion | .619 | 4.431 | .143 | 1.90 | ||||
| Zone 1 | 1 (6) | 0 (0) | .458 | 0.551 | 0 (0) | 0 (0) | ≥.999 | 0.000 |
| Zone 2 | 0 (0) | 0 (0) | ≥.999 | 0.000 | 5 (28) | 0 (0) | .070 | 3.278 |
| Zone 3 | 3 (18) | 2 (22) | .778 | 0.079 | 1 (6) | 2 (22) | .215 | 1.539 |
| Zone 4 | 8 (46) | 3 (34) | .500 | 0.454 | 3 (18) | 3 (34) | .366 | 0.816 |
| Zone 5 | 1 (6) | 1 (11) | .634 | 0.227 | 3 (18) | 1 (11) | .660 | 0.193 |
| Zone 6 | 2 (12) | 2 (22) | .482 | 0.494 | 0 (0) | 2 (22) | .043 | 4.093 |
| Zone 7 | 0 (0) | 1 (11) | .161 | 1.964 | 1 (6) | 1 (11) | .634 | 0.227 |
| Zone 8 | 0 (0) | 0 (0) | ≥.999 | 0.000 | 3 (18) | 0 (0) | .180 | 1.795 |
| Zone 9 | 2 (12) | 0 (0) | .284 | 1.147 | 1 (6) | 0 (0) | .458 | 0.551 |
| ICRS grade | .141 | 5.465 | .188 | 3.346 | ||||
| 1 | 4 (23) | 3 (34) | .592 | 0.287 | 6 (35) | 5 (56) | .320 | 0.990 |
| 2 | 11 (65) | 4 (44) | .320 | 0.990 | 6 (35) | 4 (44) | .648 | 0.208 |
| 3 | 0 (0) | 2 (22) | .043 | 4.093 | 0 (0) | 0 (0) | ≥.999 | 0.000 |
| 4 | 2 (12) | 0 (0) | .284 | 1.147 | 5 (30) | 0 (0) | .070 | 3.277 |
| Uncontained | 12 (71) | 7 (78) | .694 | 0.155 | — | — | — | — |
aValues are presented as mean ± SD or n (%). Bolded P values indicate statistically significant difference between groups (P < .05). P value for lesion size based on independent t test; P value for all other parameters based on chi-square test. ICRS, International Cartilage Repair Society; OCL, osteochondral lesion.