Chapter 2. Prehension

1 st Carpornetacarpal
Appendix A - Human Upper Limb Anatomy 353
lntermetacarpal
Metacarpals
Multangulum minor
(Trapezoid)
T
Carpals
Ulna
CM) joints (irregular)
5th Carpometacarpal
(modified saddle)
interphalangeal
(DIP) joints (hinge)
(PIP) joints (hinge)
Distal radioulnar
joint (pivot)
Figure A.3 The bones and joints of the hand and wrist. The palm
contains five metacarpals bones, while each finger has three
phalanges, with the thumb only having two. The wrist consists of
eight small bones. The joints between the bones allow movement,
according to the shape of the articulating surfaces, e.g., heads of
the bones. The types of joints and motions are described in Table
A.1.