Table 9.
Baseline Demographics in the Nonsubstantial Group and Substantial Improvement Group.
| Nonsubstantial (n = 34) | Substantial Improvement (n = 56) | P | |
|---|---|---|---|
| Age, years, mean ± SD | 33.3 ± 8.7 | 31.3 ± 9.4 | 0.3382 |
| Gender, male/female, n | 13/31 | 30/26 | 0.025 |
| Body mass index, kg/m2, mean ± SD (range) | 26.9 ± 4.3 (19.3-34.2) | 26.4 ± 4.4 (18-38.2) | 0.5651 |
| Follow-up, years, mean ± SD, y | 2.2 ± 0.6 | 2.3 ± 0.7 | 0.4481 |
| Defect size, cm2, mean ± SD | 7.1 ± 4.7 | 7.4 ± 4.8 | 0.7813 |
| Number of defects, mean ± SD | 1.6 ± 0.8 | 1.6 ± 0.9 | 0.6026 |
| Worker’s compensation, n (%) | 3 (8.8) | 3 (5.4) | 0.669 |
| Multiple previous surgeries, n (%) | 16 (47.1) | 17 (30.4) | 0.121 |
| Defect location, cm2, mean ± SD | |||
| Medial femoral condyle | 5.0 ± 1.9 (n = 9) | 4.3 ± 2.3 (n = 15) | 0.4132 |
| Lateral femoral condyle | 4.3 ± 2.2 (n = 6) | 4.6 ± 2.6 (n = 14) | 0.7799 |
| Patella | 4.3 ± 2.7 (n = 25) | 4.5 ± 2.0 (n = 34) | 0.7498 |
| Trochlea | 4.4 ± 2.3 (n = 14) | 5.5 ± 3.5 (n = 24) | 0.3117 |
| Tibia plateau | 1.1 ± 0.7 (n = 2) | 1.5 (n = 1) | n/a |
| Concomitant procedure, n (%) | 23 (67.6) | 37 (66.1) | 1.000 |
SD = standard deviation; n/a = not available.