Table 1.
Bivariate Analysis of Factors Associated With FCR Tendinopathy on MRI (n = 3631).
| Variable | Total cohort |
FCR signal changes |
%a | P value |
|---|---|---|---|---|
| (n = 3631) | (n = 98) | |||
| Age, median (IQR) | 45 (33-56) | 55 (43-66) | <.001 | |
| Sex, n (%) | ||||
| Men | 1787 (49) | 49 (50) | 2.7 | .92 |
| Women | 1844 (51) | 49 (50) | 2.7 | |
| Race, n (%) | ||||
| White | 2851 (79) | 89 (91) | 3.1 | .02 |
| African American | 188 (5.0) | 4 (4.0) | 2.1 | |
| Hispanic | 156 (4.0) | 0 | 0.0 | |
| Asian | 141 (4.0) | 2 (2.0) | 1.4 | |
| Other/unknown | 295 (8.0) | 3 (3.0) | 1.0 | |
| Indication MRI,b n (%) | ||||
| Clinical suspected FCR tendinopathy | 48 (1.3) | 44 (45) | 92 | .05 |
| Volar-radial sided wrist pain | 123 (3.4) | 15 (15) | 12 | <.001 |
| Arthritis | 184 (5.1) | 12 (12) | 6.5 | .004 |
| Nerve compression or numbness | 62 (1.7) | 3 (3,0) | 4.8 | .23 |
| Tear or dislocation | 393 (11) | 14 (14) | 3.6 | .25 |
| Non specific pain | 743 (20) | 24 (25) | 3.2 | .31 |
| Other tendinopathies or stiffness | 1050 (29) | 32 (33) | 3.0 | .43 |
| Hand or wrist pain | 1819 (50) | 50 (51) | 2.7 | .92 |
| Mass or swelling | 1454 (40) | 40 (41) | 2.8 | .92 |
| Avascular necrosis | 78 (2.1) | 2 (2.0) | 2.6 | .99 |
| Inflammation | 205 (5.6) | 5 (5.0) | 2.4 | .99 |
| Trauma or fractures | 1241 (34) | 25 (26) | 2.0 | .07 |
| Other | 120 (3.3) | 2 (2.0) | 1.7 | .77 |
Note. Bold indicates significant difference (P value below .05). FCR = flexor carpi radialis; MRI = magnetic resonance imaging; IQR = interquartile range.
a
Percentage FCR tendinopathy per variable.
b
Patients can have multiple indications for MRI: 1304 (36%) had 1 indication, 1208 (33%) had 2 indications, 725 (19%) had 3 indications, and 394 (12%) had >4 indications.