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Table 4 Longitudinal associations between the morphological parameters of PTFJ and increases in medial tibiofemoral BMLs

From: Associations between the morphological parameters of proximal tibiofibular joint (PTFJ) and changes in tibiofemoral joint structures in patients with knee osteoarthritis

 

Univariable

Multivariablea

RR (95% CI)

RR (95% CI)

Increase in medial tibial BMLs

 Ave_COR_ang

0.994 (0.914, 1.028)

0.997 (0.923,1.030)

 Ave_SAG_ang

0.989 (0.949, 1.032)

0.985 (0.945, 1.028)

 S

1.539 (1.172, 2.021)

1.400 (0.979, 2.003)

 Sτ

1.705 (1.232, 2.358)

1.547 (1.029, 2.328)

 Sφ

0.808 (0.429, 1.709)

0.803 (0.480, 1.392)

 Sυ

1.184 (0.728, 1.927)

0.945 (0.519,1.722)

Increase in medial femoral BMLs

 Ave_COR_ang

0.975 (0.949, 1.002)

0.974 (0.947, 1.002)

 Ave_SAG_ang

0.987 (0.949, 1.026)

0.985 (0.947, 1.026)

 S

1.015 (0.738, 1.396)

1.040 (0.697, 1.552)

 Sτ

1.091 (0.751, 1.586)

1.152 (0.736, 1.804)

 Sφ

0.381 (0.159, 0.913)

0.352 (0.144, 0.864)

 Sυ

1.073 (0.599, 1.508)

1.069 (0.529, 1.766)

  1. Abbreviations: PTFJ, proximal tibiofibular joint; BMLs, bone marrow lesions; Ave_COR_ang, the average angles of PTFJ in coronal plane; Ave_SAG_ang, the average angles of PTFJ in sagittal plane; S, contacting area of PTFJ; Sτ, load-bearing area of PTFJ; Sφ, lateral stress-bolstering area of PTFJ; Sυ, posterior stress-bolstering area of PTFJ; ROA, radiographic osteoarthritis
  2. aAdjusted for age, sex, height, weight, tibial plateau bone area, ROA, and intervention