Table 2.
Anterior cruciate ligament biopsy cartilage T1ρ values (± 1 S.D.) on two scanners
| Trochlear region
|
In vivo
|
Ex vivo
|
Proteoglycan
|
|---|---|---|---|
| Preoperative biopsy | 3.0 T mean T1ρ (ms) | 4.7 T mean T1ρ (ms) | PG (mg/mL) |
| Transitional zone | |||
| 1_Troch | 49.28 | 151.66 | 2.91 |
| 2_Troch | 70.55 | 76.17 | 7.48 |
| 3_Troch | 55.17 | 88.01 | 4.83 |
| 5_Troch | 43.11 | 63.85 | 23.17 |
| 6_Troch | 52.51 | 97.37 | 17.67 |
| 7_Troch | 46.56 | 67.47 | 27.76 |
| Transitional average | 52.9 (±9.7) | 90.8 (±32.4) | 13.97 (±10.35) |
| Radial zone | |||
| 1_Troch | 43.94 | 110.22 | 29.59 |
| 2_Troch | 66.11 | 72.00 | 59.38 |
| 3_Troch | 56.48 | 84.74 | 44.62 |
| 5_Troch | 42.02 | 68.43 | 39.28 |
| 6_Troch | 46.00 | 81.29 | 48.67 |
| 7_Troch | 45.45 | 65.86 | 41.07 |
| Radial average | 50.0 (±9.4) | 80.4 (±16.3) | 43.8 (±9.97) |
| Transitional + radial | 55.38 (±13.13) | 85.2 (±23.0) | 28.9 (±16.86) |