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Table 1 Patients’ demographic characteristics and clinical data

From: The characteristic findings of an inverted-type discoid lateral meniscus tear: a hidden tear pattern

  Inverted group
(n = 12)
Non-inverted group
(n = 12)
P-value
History of trauma (cases)* 12 7 0.03***
Positive findings of the McMurray test (cases)* 4 5 0.68
Positive findings of locking or catching (cases)* 1 3 0.59
Diagnosis of DLM tear by MRI (cases)* 3 9 0.04***
“Inverted sign” (cases)* 9 0 < 0.05***
Knee extension angle (°)** −2.7 ± 5.1 −1.6 ± 3.2 0.56
Knee flexion angle (°)** 128.7 ± 23.3 132.9 ± 25.4 0.68
Mean duration between the appearance of symptoms and surgery (days)** 64.1 ± 72.4 50.9 ± 48.7 0.60
  1. DLM discoid lateral meniscus, MRI magnetic resonance imaging; inverted sign: a duplicated or enlarged posterior horn and blunting of the inner rim in the sagittal plane detected by MRI
  2. *The data and P-values were determined using the χ2 test
  3. **The results are presented as the mean ± standard deviation, and P-values were determined with Student’s t-test
  4. ***Significant difference