Table 1.
Preoperative demographics, clinical findings, and radiological findings.
| Group A (n = 7) | Group B (n = 23) | p value | |
|---|---|---|---|
| Sex (male/female) | 4/3 | 1/22 | 0.001 |
| Age (years) | 59.3 ± 7.9 | 61.5 ± 8.5 | 0.54 |
| BMI (kg/m2) | 26.7 ± 3.5 | 25.2 ± 3.6 | 0.32 |
| TBIS (months) | 3.5 ± 1.5 | 4.0 ± 3.2 | 0.63 |
| Preoperative TAS | 3.1 ± 1.8 | 3.1 ± 1.2 | 0.62 |
| Preoperative Lysholm score | 51.2 ± 22.2 | 48.8 ± 19.8 | 0.81 |
| Preoperative K-L grade (0/1/2) | 5/2/0 | 8/15/0 | 0.19 |
| Preoperative FTA (degree) | 177.9 ± 2.3 | 177.8 ± 2.1 | 0.94 |
| Preoperative MRD (mm) | 4.8 ± 1.0 | 3.6 ± 0.8 | 0.003 |
Group A: patients with decreased meniscal extrusion at 1 year after transtibial fixation of a medial meniscus posterior root tear compared with preoperatively, Group B: patients with increased meniscal extrusion at 1 year after transtibial fixation of a medial meniscus posterior root tear compared with preoperatively, BMI: body mass index, TAS: Tegner Activity Scale, TBIS: time period between injury and surgery, K-L: Kellgren-Lawrence, MRD: medial meniscus radial displacement.