Table 2 Meniscal measurements and calculated variables from the baseline exam. All values are means (SD) if not otherwise stated
Ipsilateral meniscal tear (in the same compartment) | |||||||
|---|---|---|---|---|---|---|---|
Total sample | No | Yes | |||||
Both knees | Right knee | Left knee | Right knee | Left knee | Right knee | Left knee | |
Medial meniscus body | N = 236 | N = 118 | N = 118 | N = 109 | N = 110 | N = 9 | N = 8 |
Width, mm | 11.8 | 12.0 (3.4) | 11.6 (3.3) | 12.0 (3.4) | 11.7(3.3) | 11.0 (3.1) | 11.0 (2.7) |
Extrusion, mm | 1.6 | 1.9 (1.0) | 1.4 (0.77) | 1.9 (1.0) | 1.4 (0.73) | 1.9 (0.78) | 2.1 (0.99) |
Extrusion index* | 2.3 | 2.6 (1.4) | 2.0 (1.1) | 2.6 (1.4) | 1.9 (1.0) | 2.5 (1.1) | 2.7 (1.3) |
Extrusion index (ipsilat)† | 5.7 | 6.4 (3.5) | 4.9 (2.8) | 6.4 (3.6) | 4.8 (2.7) | 6.2 (2.8) | 7.0 (3.5) |
Overlap distance§, mm | 10.1 | 10.1 (3.6) | 10.2 (3.5) | 10.2 (3.6) | 10.3 (3.5) | 9.1 (3.1) | 8.9 (3.3) |
Coverage‡, % | 34.4% | 34.3 (12.0)% | 34.5 (11.8)% | 34.7 (12.2)% | 34.9 (11.8)% | 29.2 (9.7)% | 28.7 (10.7)% |
Lateral meniscus body | N = 236 | N = 118 | N = 118 | N = 112 | N = 115 | N = 6 | N = 3 |
Width, mm | 10.4 | 10.4 (2.3) | 10.3 (2.6) | 10.5 (2.3) | 10.4 (2.5) | 9.0 (1.9) | 7.7 (2.1) |
Extrusion, mm | 0.63 | 0.64 (0.79) | 0.61 (0.67) | 0.62 (0.77) | 0.61 (0.67) | 1.00 (1.10) | 0.67 (0.58) |
Extrusion index* | 0.9 | 0.9 (1.1) | 0.8 (0.9) | 0.9 (1.1) | 0.8 (0.9) | 1.4 (1.6) | 1.0 (0.8) |
Extrusion index (ipsilat)† | 2.0 | 2.1 (2.6) | 1.9 (2.1) | 2.0 (2.5) | 1.9 (2.1) | 3.2 (3.7) | 2.3 (2.0) |
Overlap distance§ | 9.8 | 9.8 (2.3) | 9.7 (2.5) | 9.9 (2.3) | 9.8 (2.5) | 8.0 (1.4) | 7.0 (2.6) |
Coverage‡ | 31.1% | 31.3 (7.4)% | 30.8 (7.9)% | 31.6 (7.4)% | 31.0 (7.8)% | 26.2 (7.6)% | 23.3 (7.8)% |