Opening the book…
Next, we need to learn the terminology of the phalanx (finger) and palmar (palm) surfaces:
Proximal phalanx – The area of the finger closest to the palm
Distal phalanx – The area of the finger furthest from the palm
Medial phalanx – The are of the finger between the proximal phalanx and the distal phalanx
Proximal crease – The flexion line of the joint between the palm and the proximal phalanx
Distal crease – The flexion line of the joint between the distal phalanx and the medial phalanx
Medial crease – The flexion line of the joint between the medial phalanx and the proximal phalanx
What about the thumb? The thumb only has a distal phalanx/crease and a proximal phalanx/crease. It should be noted that the distal phalanx is also called the volar pad, but more on that a bit later.
This page titled 4.2: The finger was last modified on Sun, 25 Jan 2026 01:27:47 GMT and is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by David Doglietto.
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