Introduction/Definition
Baastrup’s disease (Baastrup syndrome, Baastrup sign) is a pain syndrome in the lumbar spine area described by Christian Ingerslev Baastrup. It is caused by touching spinous processes (Processus spinosus) and irritation of the surrounding ligaments and muscles. In the English-speaking world, Baastrup’s disease is also called “kissing spine disease”.
Cause
In the case of large spinous processes and excessive convex bending of the lumbar spine (hyperlordosis), the spinous processes may come into contact. This also explains why very hard working men are more often affected by Baastrup syndrome. Especially predisposing seems to be a long lasting shoveling activity, for example in road construction. In combination with degenerative changes in the spinal column with reduced height of the movement segments, especially of the spinal column pillar lying forward (ventrally), Baastrup’s disease can develop.
Clinic
Baastrup disease is one of the causes of chronic lumbar syndrome. The extension of the spinal column leads to a further increase in lordosis and is therefore particularly painful.
- Print and
- Sensitive to knocking.
Diagnostics
The spinous processes that touch each other are called “kissing spine” and are clearly visible from the side on the X-ray. The following can also often be seen: In addition, the increased convex curvature of the lumbar spine (hyperlordosis) and the degenerative changes of the spinal column can be visible in the X-ray image. During the physical examination, a sensitivity to pressure and knocking over the lumbar spine, as well as increased hollow back formation, are noticeable.
For further diagnosis, a local anesthetic can be injected into the affected area. If pain relief is subsequently achieved, this is a further indication for the diagnosis. Other imaging procedures such as computed tomography (CT) or magnetic resonance imaging (MRI) are usually not necessary.
- Bony new formations (osteophytes),
- Calcifications and
- Connective tissue hardening (sclerosis) in the attachment area of the muscles running along the spinal column (paravertebral muscles).