Fig. 2From: The relationship between the degeneration and asymmetry of the lumbar multifidus and erector spinae muscles in patients with lumbar disc herniation with and without root compressionDegrees of fat infiltration; MF: musculus multifidus, ES: musculus erector spinae and A Grade 1: < 10% fat infiltration B Grade 2: 10–50% fat infiltration C Grade 3: > 50% fat infiltrationBack to article page