Table 1: Correlations between fatty infiltration grade on T1WI MRI and clinical function score grade.

Muscles

r

P

Gluteus maximus*

0.518

0.016

Gluteus medius*

0.528

0.014

Gluteus minimus*

0.528

0.014

Iliopsoas*

0.695

< 0.001

Piriformis*

0.451

0.040

Obturator internus

0.358

0.111

Obturator externus

0.221

0.350

Pectineus*

0.567

0.009

Tensor fasciae latae

0.199

0.388

Adductor magnus*

0.607

0.005

Gracilis

0.254

0.280

Adductor longus*

0.547

0.013

Sartorius

0.324

0.164

Rectus femoris*

0.614

0.004

Vastus internus*

0.566

0.009

Vastus medialis*

0.522

0.018

Vastus lateralis*

0.503

0.024

Biceps femoris*

0.508

0.022

Semitendinosus

0.380

0.099

Semimembranosus

0.337

0.147

Gastrocnemius*

0.715

0.001

Soleus

0.385

0.127

Hallux longus

0.085

0.745

Posterior tibial*

0.514

0.035

Anterior tibial

0.127

0.628

Extensor hallucis longus

0.149

0.569

Extensor longus digitorum

0.149

0.569

Peroneus longus*

0.571

0.017

Erector spinae*

0.499

0.025

Greater psoas

0.412

0.071

Iliacus

0.323

0.165