Compared to neck pain and low-back pain, non-specific back pain has in the past received and still today receives insufficient attention in terms of clinical and epidemiological research. Almost all physiotherapists specialized in musculoskeletal rehabilitation use some posteroanterior pressure (PA) in the evaluation, in order to highlight any hypomobility or hypermobility in the intersegmental accessory movements on which to base their clinical reasoning and therapeutic strategies. This article describes one of these maneuvers.