NCIt definition : The second and the longest of five miniature long bones located in the palm of the
hand, which articulates proximally with the trapezoid, trapezium, and capitate at
the carpometacarpal joint and distally with the index finger phalanx at the metacarpophalangeal
joint.;
Alternative definition : CDISC: The second of the five long bones located in the palm of the hand, as counted
from the thenar side of the hand; it articulates proximally with the trapezoid and
distally with the second phalanx (index finger).;