Assertion: trapezium | /r/HasProperty | cartilaginous
Facets:
value: like all the other carpal bones
type: OTHER
value: at birth
type: TEMPORAL
Source sentences:
text: Like all the other carpal bones, the trapezium is cartilaginous at birth, beginning to ossify (becoming visible in an x-ray) when a child is 4 to 6 years old, around the same time as the scaphoid and trapezoid  .