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Table 2 Comparison of X-ray and MRI measurements between patients in the MMPRT group and non-MMPRT group

From: Potential of the non-weight-bearing tunnel view in diagnosing medial meniscus posterior root tear: a pilot study of X-ray characteristics

  All
(n = 43)
MMPRT group
(n = 21)
Non-MMPRT group
(n = 22)
P value
FTA
 Contralateral side (°) 177.3 (176.0–178.8) 177.0 (176.0–178.4) 177.4 (176.3–179.3) 0.39
 Affected side (°) 178.3 (176.8–179.0) 178.3 (177.1–179.3) 178.4 (175.8–179.0) 0.42
PTS
 Contralateral side (mm) 6.7 (5.3–8.2) 8.5 (7.3–10.8) 5.7 (4.5–7.3) <0.01*
 Affected side (mm) 7.3 (5.1–9.1) 8.5 (7.3–10.8) 5.7 (4.5–7.3) <0.01*
MTE–MFC distance
 Contralateral side (mm) 5.1 (4.2–5.5) 5.1 (4.1–7.8) 5.0 (4.5–5.4) 0.64
 Affected side (mm) 6.0 (5.0–7.3) 7.2 (6.2–7.9) 5.4 (4.4–6.0) <0.01*
 Difference between affected side and contralateral side (mm) 0.7 (0.2–2.1) 1.9 (0.8–2.6) 0.3 (−0.7–0.3) <0.01*
MTFJ width
 Contralateral side (mm) 4.9 (4.3–5.3) 5.0 (4.3–5.4) 4.7 (4.3–5.2) 0.36
 Affected side (mm) 4.1 (3.5–4.7) 3.8 (3.0–4.1) 4.5 (4.0–5.3) <0.01*
 Difference between affected side and contralateral side (mm) −0.6 (−1.4–−0.1) −1.2 (−2.3–−0.7) −0.1 (−0.5–0.3) <0.01*
MRD (mm) 3.5 (2.5–4.5) 4.1 (3.7–5.2) 2.5 (0.8–3.3) <0.01*
  1. Note: Data are expressed as median (IQR: Q1–Q3); Mann–Whitney U test. *P < 0.05
  2. Abbreviations: MRI magnetic resonance imaging, MMPRT medial meniscus posterior root tear, FTA femorotibial angle, PTS posterior tibial slope, MTE medial tibial eminence, MFC medial femoral condyle, MTFJ medial tibial femoral joint, MRD medial radial displacement, IQR interquartile range