Second metacarpal (right) (Os metacarpale secundum)
Educational content only — not medical advice.
Anatomy
The metacarpal of the index finger in the right hand: a tubular shaft with a basal end resting on the carpals and a rounded head articulating with the proximal phalanx. The longest and most rigid, its base notched into both trapezium and trapezoid, taking the brunt of a strong punch.
Clinical notes
Metacarpal head fractures from direct impact deform the joint surface and stiffen flexion if left unreduced.
Related structures
Educational references
FAQ
What is the role of the Second metacarpal (right)?
The metacarpal of the index finger in the right hand: a tubular shaft with a basal end resting on the carpals and a rounded head articulating with the proximal phalanx. The longest and most rigid, its base notched into both trapezium and trapezoid, taking the brunt of a strong punch.
Why is the Second metacarpal (right) clinically important?
Metacarpal head fractures from direct impact deform the joint surface and stiffen flexion if left unreduced.
Source & license
Derived from Z-Anatomy (Gauthier Kervyn et al.), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); upstream geometry from BodyParts3D, © The Database Center for Life Science. license details