Table 3 HU values of the first metacarpal bone and trapezium in the thumb CMC joint: comparison between control, preoperative, and postoperative groups
The First Metacarpal | |||
|---|---|---|---|
Area | Control | Thumb CMC Osteoarthritis Pre-operative | Thumb CMC Osteoarthritis Post-operative |
1 | 478.0 (386.8-550.5) | 166 (115–213) | 191 (162–316) |
2 | 427.2 (345.0-480.8) | 212 (110–389) | 309 (220–368) |
3 | 406.1 (360.9-477.6) | 239 (128–359) | 330 (227–356) |
4 | 543.9 (446.6-618.8) | 369 (291–486) | 359 (253–446) |
5 | 533.7 (423.8-613.4) | 423 (374–518) | 339 (288–442) |
6 | 471.0 (422.0-564.2) | 421 (292–466) | 348 (315–408) |
7 | 514.8 (364.2-549.5) | 651 (597–747) | 403 (350–493) |
8 | 560.7 (480.9-613.3) | 758 (643–803) | 433 (307–475) |
9 | 494.5 (447.8-627.3) | 694 (544–777) | 404 (272–477) |
The Trapezium | |||
|---|---|---|---|
Area | Control | Thumb CMC Osteoarthritis Pre-operative | Thumb CMC Osteoarthritis Post-operative |
1 | 572.8 (503.6-644.3) | 538 (420–661) | 413 (346–582) |
2 | 629.2 (473.8-793.5) | 596 (550–640) | 469 (428–489) |
3 | 575.6 (472.9–733.0) | 473 (382–537) | 389 (331–455) |
4 | 553.8 (424.8-613.7) | 791 (632–1000) | 442 (361–512) |
5 | 732.5 (526.6-794.2) | 898 (867–960) | 571 (508–649) |
6 | 613.8 (514.2-672.6) | 772 (696–824) | 517 (490–530) |
7 | 521.1 (450.9-590.5) | 590 (425–678) | 459 (397–571) |
8 | 555.1 (488.6-661.6) | 526 (415–660) | 398 (361–518) |
9 | 490.9 (451.3-561.2) | 410 (359–468) | 433 (272–499) |