Non-specific lower back pain is one of the most common complaints in the Netherlands. Approximately eighty percent of Dutch people have suffered from lower back pain at some point. In most cases, the pain disappears within three months. However, if the complaints last longer, it is referred to as chronic lower back pain. This group of patients is a major social problem in the Netherlands. This means that many people are at home with back pain who are unable to perform their work properly and who therefore end up on sick leave. The complaints are very unpleasant for the patient. They feel ill, are in pain, but the cause of this cannot be demonstrated. Because there is no clear cause for the disease, the patient cannot be treated in a targeted manner. Non-specific lower back pain also includes the following "diagnoses": Lumbago. This means that there are pain and stiffness complaints in the lower part of the back; Lumbago. This means that there are pain and stiffness complaints in the lower part of the back, possibly radiating to the buttocks and groin. Sometimes there is also radiation to the upper legs. Sciatica. This only means that there are pain complaints in the course of the nervus sciadicus (the large sciatic nerve). Worn intervertebral discs. Worn intervertebral discs is in itself a medical diagnosis. Research has only shown that a large percentage of people over the age of thirty have worn intervertebral discs. However, only a small percentage reports pain complaints in that area. This medical diagnosis does not necessarily result in pain and stiffness complaints..!!