Table 1.
Clinical background of knee magnetic resonance imaging in the included subjects
| Clinical information | SHFPE group cases | SHFPE group controls | pa | QFPE group cases | QFPE group controls | pb | PFPE group cases | PFPE group controls | pc | Mixed group casesd |
|---|---|---|---|---|---|---|---|---|---|---|
| (n = 50) | (n = 50) | (n = 68) | (n = 68) | (n = 42) | (n = 42) | (n = 116) | ||||
| Age* (years) | 36.4 ± 1.5 | 36.4 ± 1.5 | N/A | 35.8 ± 6.8 | 35.8 ± 6.8 | N/A | 36.4 ± 7.7 | 36.4 ± 7.7 | N/A | 37.6 ± 4.1 |
| Sex† (female) | 34 (68.0) | 34 (68.0) | N/A | 32 (47.0) | 32 (47.0) | N/A | 29 (69.0) | 29 (69.0) | N/A | 65 (64.7) |
| BMI*(kg/m2) | 21.5 ± 2.5 | 21.4 ± 2.7 | 0.512 | 21.7 ± 2.2 | 21.6 ± 3.1 | 0.625 | 21.4 ± 2.3 | 21.1 ± 3.2 | 0.416 | 21.7 ± 3.0 |
| Anterior knee pain† | 35 (70.0) | 25 (50.0) | 0.087 | 17 (25.0) | 27 (39.7) | 0.121 | 23 (54.8) | 28 (66.7) | 0.180 | 90 (77.6) |
| Patellar tenderness (superior pole)† | 5 (10.0) | 7 (14.0) | 0.754 | 4 (5.9) | 6 (8.8) | 0.754 | 27 (64.3) | 14 (33.3) | 0.019 | 45 (38.8) |
| Patellar tenderness (inferior pole)† | 38 (76.0) | 20 (40.0) | 0.001 | 4 (5.9) | 8 (11.8) | 0.289 | 5(11.9) | 9(21.4) | 0.388 | 85 (73.3) |
*Data: Mean ± SD. †Data: No. (percentage)
pa Comparison between SHFPE group cases and controls
pb Comparison between QFPE group cases and controls
pc Comparison between PFPE group cases and controls
Mixed group casesd: 124 cases with two or three different fat pad edemas
Abbreviations: BMI, Body mass index, SHFPE, superolateral Hoffa fat pad edema, QFPE, quadriceps fat pad edema; PFPE, prefemoral fat pad edema; SD, standard deviation