proximal phalanx of the index finger (right) (Phalanx proximalis secunda)
Educational content only — not medical advice.
Anatomy
the longest phalanx of the index finger: its concave base receives the metacarpal head, and its pulley-shaped head articulates with the middle phalanx. This phalanx belongs to the index finger of the right hand.
Clinical notes
The commonest of hand phalanx fractures; rotational malunion disables the fist, and finger rotation must be tested with the fingers flexed.
Related structures
Educational references
FAQ
What is the role of the proximal phalanx of the index finger (right)?
the longest phalanx of the index finger: its concave base receives the metacarpal head, and its pulley-shaped head articulates with the middle phalanx. This phalanx belongs to the index finger of the right hand.
Why is the proximal phalanx of the index finger (right) clinically important?
The commonest of hand phalanx fractures; rotational malunion disables the fist, and finger rotation must be tested with the fingers flexed.
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