Fig. 2From: Morphological parameters of fourth lumbar spinous process palpation: a three-dimensional reconstruction of computed tomographyMeasurements of L4. a ∠α, the angle between the axis of L4-SP and the median line of the vertebra in the superior aspect. b ∠β, the angle between the axis of L4-SP and the median line of the vertebra in the lateral aspect. c ∠γ, the angle between the SP axis and the line attached the transverse processesBack to article page