Table 1.
Baseline characteristics
| Characteristics | Overall (n= 117) | Meniscal tear (n= 51) | No meniscal tear (n= 66) | P-value |
|---|---|---|---|---|
| Age, years, mean (SD) | 43.0 (12.2) | 46.43 (11.55) | 40.36 (12.06) | 0.006 |
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| Sex, male (%) | 67 (57.3) | 38 (74.5) | 29 (43.9) | 0.002 |
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| Weight, kg, mean (SD) | 81.2 (14.9) | 84.63 (11.74) | 78.49 (16.54) | 0.021 |
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| Length, m, mean (SD) | 1.76 (0.1) | 1.79 (0.08) | 1.75 (0.11) | 0.006 |
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| BMI, mean (SD) | 25.9 (3.8) | 26.26 (3.07) | 25.60 (4.25) | 0.337 |
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| Pain severity VAS a, mean (SD) | 48.5 (25.6) | 42.16 (24.43) | 53.42 (25.56) | 0.017 |
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| Duration of complaints in weeks, median (range) | 6 (0.5–27) | 8 (0.5–27) | 5 (1–27) | 0.858 |
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| Symptom side, right (%) | 59 (50.4) | 27 (52.9) | 32 (48.5) | 0.771 |
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| Performing sports, yes (%) | 91 (77.8) | 43 (84.3) | 48 (72.7) | 0.204 |
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| Weight-bearing during trauma, yes (%) | 40 (34.2) | 24 (47.1) | 16 (24.2) | 0.017 |
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| Work-related kneeling or squatting >1 hour/day, yes (%) | 32 (27.4) | 16 (31.4) | 16 (24.2) | 0.517 |
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| Pain during passive extension, yes (%) | 75 (64.1) | 35 (68.6) | 40 (60.6) | 0.482 |
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| Origin of complaints | ||||
| Unknown (%) | 76 (65.0) | 14 (27.5) | 27 (40.9) | 0.188 |
| (Rotation) Trauma (%) | 41 (35.0) | 37 (72.5) | 39 (59.1) | |
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| Ability to walk the stairs, no (%) | 7 (6.0) | 3 (5.9) | 4 (6.0) | 0.99 |
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| Effusion, yes (%) | 75 (64.1) | 40 (78.4) | 11 (16.6) | 0.008 |
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| Warmth, yes (%) | 46 (39.3) | 25 (49.0) | 21 (31.8) | 0.090 |
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| Colour red/blue, yes (%) | 8 (6.8) | 6 (11.8) | 2 (3.0) | 0.137 |
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| Locking, yes (%) | 30 (25.6) | 8 (15.7) | 22 (33.3) | 0.051 |
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| Giving way, yes (%) | 66 (56.4) | 31 (60.8) | 35 (53.0) | 0.515 |
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| Meniscal tears, n (%) | 51 (43.6) | NA | NA | NA |
| Medial meniscal tears, n (%) | 40 (78.4) | NA | NA | NA |
| Lateral meniscal tears, n (%) | 7 (13.7) | NA | NA | NA |
| Medial and lateral meniscal tears, n (%) | 4 (7.8) | NA | NA | NA |
| Anterior horn tears, n (%) | 6 (11.7) | NA | NA | NA |
| Posterior horn tears, n (%) | 41 (80.4) | NA | NA | NA |
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| Combination of CL and meniscal tears, n (%) | 11 (9.4) | NA | NA | NA |
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| Combination of chondropathy in medial or lateral compartment and meniscal tear, n (%) | 20 (17.1) | NA | NA | NA |
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| CL tears, n (%) | 13 (11.1) | NA | NA | NA |
| Isolated ACL tears, n (%) | 3 (23.1) | NA | NA | NA |
| Isolated PCL tears, n (%) | 2 (15.4) | NA | NA | NA |
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| No knee pathology, n (%) | 40 (34.2) | NA | NA | NA |
ACL = anterior cruciate ligament. BMI = body mass index. CL = cruciate ligament. PCL = posterior cruciate ligament. VAS = visual analogue scale. For meniscal tears and horn tears, n = 51; for isolated CL tears, n = 13.
a
VAS pain: 0 = no pain, 100 = worst pain possible in the previous week.