Answer from Dr Merkl:
Defects in the vertebral arches are often congenital, but are sometimes also the result of a fatigue fracture after overloading. Such defects are the cause of a vertebra sliding forwards in relation to the vertebra below it. As the fifth lumbar vertebra is often affected, cyclists suffer particularly frequently. The fifth vertebra is a weak point in the muscular chain that is stressed during cycling, even in healthy cyclists. The tensile and compressive forces irritate the emerging nerve roots and cause pain, which can thoroughly spoil your cycling. Nevertheless, cycling is still possible. The focus of therapy is on stabilising the transitions by strengthening, initially with supports and heat protection if necessary. Change your sitting position so that you are not riding with a hunched back - raise the handlebars higher than the saddle. Shortening the stem length can also work wonders. Shock absorber systems for the rear triangle also reduce impact and compression forces.
