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Table 4 Relationships between subchondral trabecular bone microarchitecture parameters and OA severity index

From: Association between knee alignment, osteoarthritis disease severity, and subchondral trabecular bone microarchitecture in patients with knee osteoarthritis: a cross-sectional study

Parameters OARSI score K-L grade
Medial Lateral Medial Lateral
HKA 0.792 (0.683, 0.862)** − 0.365 (− 0.550, − 0.123)** 0.743 (0.616, 0.831)** − 0.325 (− 0.543, − 0.097)**
BV/TV 0.853 (0.782, 0.913)** 0.754 (0.643, 0.837)** 0.742 (0.608, 0.852)** 0.674 (0.519, 0.789)**
Tb.N 0.607 (0.464, 0.728)** 0.625 (0.486, 0.755)** 0.588 (0.397, 0.734)** 0.570 (0.388, 0.711)**
Tb.Th 0.743 (0.642, 0.828)** 0.599 (0.434, 0.743)** 0.651 (0.501, 0.770)** 0.518 (0.320, 0.678)**
Tb.Sp − 0.649 (− 0.752, − 0.520)** − 0.625 (− 0.739, − 0.497)** − 0.574 (− 0.716, − 0.385)** − 0.560 (− 0.705, − 0.379)**
BS/BV − 0.840 (− 0.894, − 0.767)** − 0.705 (− 0.811, − 0.577)** − 0.713 (− 0.819, − 0.573)** − 0.579 (− 0.724, − 0.392)**
  1. The indicated values are Pearson’s or Spearman’s coefficient and 95% confidence interval in brackets
  2. BV/TV bone volume fraction, Tb.N trabecular number, Tb.Th trabecular thickness, Tb.Sp trabecular separation, BS/BV specific bone surface
  3. **P < 0.01