CHAPTER 18 : The Joints of the wrist , hand and fingers

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Organization of the Hand

Hand Osteology


  • Eight carpal bones

Scaphoid, Lunate, Trapezium, Triquetrium, Hamate, Capitate, Triquetral and Pisiform

  • Five metacarpals

  • Fourteen phalanges

The Scaphoid bone


  • Has a body, neck and head.
  • The blood supply to the body is from the distal end
  • Scaphoid fractures are common.

Other carpal bones  

  • Dislocations are common with the Lunate
  • Triquetral makes contact with ulna at adduction
  • The tendon of the flexor carpi ulnaris, pisohamate and piso-metacarpal ligament attach to the pisiform
  • Trapezium characterized by grove for tendon of flexor carpi radialis. To it is attached the flexor retinaculum and radial collateral ligament
  • Capitate is centrally placed and is the largest carpal bone
  • Hamate affords attachment to flexor retinaculum and has rough dorsal and palmar surfaces for ligament.
  • Capitate is first to ossify. Pisiform is last ( What is the order for the others? )


metacapals and phalanges :  

Metacarpals are long bones with head, shaft and base.

The second metacarpal has the largest base and shaft

  • The 14 phalanges bear heads, shafts and bases

  • Note primary ossification centers for the shafts and secondary centers for base of 1 st and heads of other metacarpals