Rippensehnen

Rippensehnen is a term that appears in some German anatomical texts to describe the tendinous attachments on the ribs where thoracic wall muscles insert. It is not a single discrete structure, but rather a way to refer to the fibrous, tendon-like connections of several muscles to the rib cage. In modern anatomy, the term is used less frequently and the insertions are usually described by the specific muscle.

Anatomy-wise, the concept includes the tendinous portions of the intercostal muscles and related structures that attach to the ribs and costal cartilages. The external intercostal muscles insert on the inferior border of the rib above, while the internal intercostals and the innermost intercostal muscles have their own fibrous insertions along the inner surfaces of the ribs. The transversus thoracis, a small muscle on the inner chest wall, has tendinous attachments to the costal cartilages and adjacent ribs. The overarching fibrous tissue and aponeuroses that extend over the rib surfaces are often encompassed by the concept of Rippensehnen.

Functionally, these tendinous connections transmit muscular forces to the thoracic cage during breathing and chest wall movements, contributing to rib stability and the mechanics of respiration. They help coordinate expansion and compression of the chest and assist in maintaining the integrity of the rib cage.

Clinical significance is generally indirect: pathology is usually discussed in terms of intercostal muscle strain, costal cartilage or rib injuries, or chest-wall reconstruction, rather than as a distinct entity named Rippensehnen. Imaging typically targets the muscles or ribs rather than the abstract idea of rib tendons.

See also: intercostal muscles; transversus thoracis; rib cage; chest wall.