Table 1.
T2* model: Summary of ligament structural property prediction equations as a function of ligament sub-volumes (Vol1, Vol2, Vol3, Vol4) defined by range of T2* values.
| Dependent Variable (Y) | Predictor Term | T2* Range (ms) | P | R2 | R2 95% CL | Standard Error | Predictor Term Contribution per unit volume (mm3) | Equati0n |
|---|---|---|---|---|---|---|---|---|
| Max Load (N) | Vol1 | 0 -12.5 | <0.001 | 0.93 | [0.92, 0.94] | 109 N | 1.55 N | Max Load = −161.5 + (1.55 × Vol1) + (1.20 × Vol2) - (1.62 × V0l3) - (5.48 × Vol4) |
| Vol2 | 12.6 - 25 | 0.396 | 1.20 N | |||||
| Vol3 | 25.1 - 37.5 | 0.891 | −1.62 N | |||||
| Vol4 | 37.6 - 50 | 0.746 | −5.48 N | |||||
| Yield Load (N) | Vol1 | 0 -12.5 | 0.005 | 0.78 | [0.75, 0.81] | 141 N | 1.13 N | Yield Load = 55.3 + (1.13 × Vol1) + (0.04 × Vol2) - (1.24 × Vol3) - (1.64 x Vol4) |
| Vol2 | 12.6 - 25 | 0.983 | 0.04 N | |||||
| Vol3 | 25.1 - 37.5 | 0.936 | −1.24 N | |||||
| Vol4 | 37.6 - 50 | 0.940 | −1.64 N | |||||
| Stiffness (N/mm) | Vol1 | 0 -12.5 | <0.001 | 0.88 | [0.86, 0.90] | 26 N/mm | 0.28 N/mm | Stiffness = −1.8 + (0.28 × Vol1) + (0.02 × Vol2) + (0.55 × Vol3) - (0.70 × Vol4) |
| Vol2 | 12.6 - 25 | 0.961 | 0.02 N/mm | |||||
| Vol3 | 25.1 - 37.5 | 0.845 | 0.55 N/mm | |||||
| Vol4 | 37.6 - 50 | 0.860 | −0.70 N/mm |