Table 1.
Mean T2 values (ms) wit–h 95%CIs for various layers of the patellar cartilage and variation over time.
| A: ICRS 0 Control healthy (n = 11) |
B: ICRS 1 (n = 10) |
C: ICRS 2 (n = 21) |
Pgrade | BC: ICRS 0, area adjacent to defect Control patient (n = 26) |
PA vs BC | ||
|---|---|---|---|---|---|---|---|
| Global | 1st | 33.1 (29.0–37.2) | 38.3 (28.6–48.0) | 42.3 (37.7–46.9) | 0.063 | 36.8 (34.0–39.6) | 0.132 |
| 2nd | 33.4 (28.9–37.9) | 42.1 (34.8–49.4) | 44.8 (39.6–50.0) | 0.016 | 38.3 (35.5–41.0) | 0.053 | |
| Δ | 0.3 (−0.6–1.3) | 3.8 (0.1–7.5) | 2.5 (1.1–3.9) | 0.069 | 1.4 (0.6–2.7) | 0.104 | |
| Ptime | 0.483 | 0.045 | 0.001 | 0.0001 | |||
| Superficial | 1st | 39.1 (35.5–42.7) | 44.8 (33.0–56.6) | 48.9 (43.5–54.4) | 0.100 | 43.6 (40.3–46.8) | 0.099 |
| 2nd | 39.6 (35.4–43.8) | 49.5 (40.3–58.7) | 52.2 (45.8–58.6) | 0.029 | 45.0 (42.0–47.9) | 0.041 | |
| Δ | 0.5 (−0.8–1.7) | 4.6 (0.2–9.1) | 3.3 (1.3–5.2) | 0.092 | 1.4 (0.2–2.6) | 0.355 | |
| Ptime | 0.709 | 0.138 | 0.005 | 0.026 | |||
| Deep | 1st | 27.1 (22.0–32.2) | 31.8 (23.9–39.6) | 35.7 (30.9–40.5) | 0.079 | 30.1 (27.4–32.7) | 0.238 |
| 2nd | 27.3 (21.9–32.6) | 34.7 (28.3–41.1) | 37.4 (32.4–42.5) | 0.030 | 31.5 (28.7–34.3) | 0.110 | |
| Δ | 0.2 (−0.7–1.0) | 2.9 (−1.1–6.9) | 1.7 (0.6–2.9) | 0.172 | 1.5 (0.5–2.4) | 0.082 | |
| Ptime | 0.411 | 0.042 | 0.002 | 0.003 | |||
| Zonal | 1st | 12.0 (8.8–15.1) | 13.1 (7.8–18.3) | 13.2 (8.6–17.7) | 0.919 | 13.5 (11.7–15.4) | 0.360 |
| 2nd | 12.3 (9.1–15.6) | 14.8 (8.5–21.1) | 14.8 (9.6–19.8) | 0.757 | 13.4 (11.4–15.5) | 0.537 | |
| Δ | 0.3 (−0.6–1.3) | 1.7 (−2.5–6.0) | 1.5 (0.1–3.1) | 0.639 | −0.1 (−1.5–1.3) | 0.701 | |
| Ptime | 0.457 | 0.392 | 0.048 | 0.886 | |||
1st: first measurement (early unloading); 2nd: second measurement (late unloading); Δ: difference over time; Pgrade: ANOVA; Ptime: t-Test.
Bold values indicate p < 0.05.