[Parallelism of L5-S1 in the radiological diagnosis of lumbar disk hernia].

The authors show a study about the measuring of L5-S1 angle in 100 patients with diagnosis of L5-S1 discal prolapse, confirmed by the interoperative report. The value of the angle, in 72% of cases, resulted equal to, or lower than 10, with an aggregate average of 9.45.