Translations:Kreuz- und Steißbein/3/en

The coccyx (Os coccygis) on the other hand consists of three to four rudimentary vertebrae. Only the first coccygeal vertebrae still shows a typical structure of a vertebra. The size of the coccyx decreases distally. From the first coccygeal vertebra arise two bony articular processes, the so-called coccygeal horns (Cornua coccygea). The coccyx also has short transverse processes and is generally connected to the tip of the sacrum by a cartilaginous (Sacrococcygea) process. This enables a passive forward and backward movement of the coccyx. From the age of mid-20, this mobility decreases due to mineralization.