Table 2.
Measurements for SSC and ISP/TM Structural Muscle Integrity Through SSC Diameters, Mean Muscle Attenuation, and Voxel Quantificationa
| Preoperative | Follow-Up | |||||
|---|---|---|---|---|---|---|
| Latarjet | ICBGT | P Value | Latarjet | ICBGT | P Value | |
| SSC diameter, mm | ||||||
| VD | 82.6 ± 10.9 | 86.3 ± 9.6 | .197 | 82.2 ± 12.0 | 83.5 ± 9.8 | .668 |
| UTD | 26.6 ± 3.8 | 27.3 ± 4.5 | .521 | 26.0 ± 6.0 | 27.2 ± 4.7 | .456 |
| LTD | 30.3 ± 5.4 | 31.0 ± 6.1 | .671 | 28.3 ± 5.2 | 30.1 ± 5.6 | .249 |
| Mean muscle attenuation, HU | ||||||
| SSC (total) | 57.5 ± 5.4 | 57.4 ± 4.9 | .915 | 56.2 ± 7.6 | 56.2 ± 7.3 | .997 |
| SSC (UMA) | 58.1 ± 7.9 | 59.7 ± 8.8 | .510 | 50.6 ± 9.7 | 54.7 ± 9.0 | .124 |
| SSC (LMA) | 59.2 ± 7.4 | 59.1 ± 5.7 | .958 | 60.7 ± 12.7 | 58.6 ± 10.9 | .515 |
| ISP/TM | 66.9 ± 8.5 | 65.0 ± 9.3 | .451 | 67.6 ± 9.3 | 66.5 ± 9.1 | .651 |
| Fatty muscle infiltration, % | ||||||
| SSC | 2.0 ± 2.9 | 2.4 ± 2.2 | .546 | 5.3 ± 4.5 | 2.3 ± 1.7 | .001b |
| ISP/TM | 1.7 ± 2.8 | 2.0 ± 2.5 | .630 | 3 ± 3.6 | 1.7 ± 1.3 | .064 |
aValues are expressed as mean ± SD. HU, Hounsfield units; ICBGT, iliac crest bone graft transfer; ISP, infraspinatus; LMA, lower muscle attenuation; LTD, lower transverse diameter; SSC, subscapularis; TM, teres minor; UMA, upper muscle attenuation; UTD, upper transverse diameter; VD, vertical diameter.
bSignificant difference.