All of the following bones are involves in wrist joint formation; except:
Scaphoid
Ulna
Radius
Triquetral
Ans. b. UlnaWrist Joint (Radiocarpal Joint)It is a synol ellipsoid joint.It is formed by aiculation of the distal end of the radius and the aicular disc above and the scaphoid, lunate, and triquetral bones below.Ulna excluded from the wrist joint by the aicular disc.