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middle phalanxThe phalanx of the finger or toe that lies between between the distal and the proximal phalanges. The first finger (thumb) and hallux (big toe) do not contain middle phalanges.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
When there are three phalanges, the phalanx intermediate between distal and proximal phalanges.
See also: phalanx
Medical Dictionary, © 2009 Farlex and Partners