Table 3.

Pearson’s r correlation with 95% confidence intervals and P values for associations of quadriceps intramuscular fat fraction, Lean ACSA, and strength with age and BMI. Kendall’s τ correlation with 95% confidence intervals and P values for associations of quadriceps intramuscular fat fraction, Lean ACSA, and strength with KL grade, and mWORMS scores for cartilage, meniscus and BMLs.

	Age	BMI	KL	Total Cartilage mWORMS	Total Meniscus mWORMS	Total BML mWORMS
Quadriceps intraMF Fraction	0.29 (0.09, 0.46) 0.004	0.16 (−0.04, 0.35) 0.112	0.25 (0.11, 0.37) 0.002	0.26 (0.12, 0.38) 0.001	0.18 (0.04, 0.31) 0.024	0.14 (0.0002, 0.28) 0.077
Quadriceps Lean ACSA	−0.32 (−0.48, −0.12) 0.002	0.22 (0.02, 0.40) 0.035	− 0.07 (−0.21, 0.06) 0.339	−0.17 (−0.30, −0.03) 0.024	−0.13 (−0.27, 0.01) 0.087	−0.03 (−0.17, 0.11) 0.737
Quadriceps Isometric Torque	−0.36 (−0.54, −0.16) 0.001	0.22 (0.0003, 0.42) 0.050	−0.23 (−0.36, −0.08) 0.007	−0.16 (−0.31, −0.01) 0.044	−0.13 (−0.27, 0.03) 0.133	−0.13 (−0.28, 0.28) 0.136

ACSA = Lean Anatomical Cross-Sectional Area; BML = Bone Marrow Lesion; mWORMS = modified Whole Organ Magnetic Resonance Score