Table 2 Factors associated with baseline medial meniscus extrusion

Age (per year)

1.06 (0.98–1.13)

1.03 (0.94–1.13)

0.579

Sex (female versus male)

0.52 (0.21–1.28)

3.67 (0.65–20.80)

0.141

OA family history (+ versus -)

1.63 (0.66–3.99)

0.65 (0.21–2.02)

0.452

BMI (per unit)

1.16 (1.07–1.25)*

1.13(1.02–1.25)*

0.019

Weight (per kg)

1.06 (1.03–1.09)*

1.04 (1.00–1.08)*^b

0.029

Obese (+ versus -)

4.90 (1.98–12.18)*

4.87 (1.59–14.92)*^c

0.006

Past knee injury (+ versus -)

2.62 (1.03–6.64)*

3.73 (1.16–11.97)*

0.027

Medial tibial cartilage volume (per ml)

2.06 (0.99–4.31)

1.52 (0.42–5.54)

0.527

Medial tibial bone area (per cm²)

1.35 (1.15–1.59)*

1.37 (1.02–1.85)*

0.038

Medial radiographic osteoarthritis (+ versus -)

6.88 (2.57–18.40)*

4.21 (1.25–14.21)*

0.021

Medial joint space narrowing (per grade)

4.27 (1.65–11.06)*

1.97 (0.56–6.87)

0.288

Medial osteophytes (per grade)

9.52 (3.49–25.97)*

4.89 (1.59–15.02)*

0.006