<prompt> Articulation of pisiform bone is with:TriquetralLunateScaphoidTrapezoid  <response>: Ans. A TriquetralRef: BDC, 6th ed. vol. I pg. 25; Snells 8th ed. pg. 402PISIFORM It is a sesamoid bone in the tendon of flexor carpi uinaris. Its dorsal surface presents a smooth, oval facet, for articulation with the triquetral The palmar surface is rounded and rough, and gives attachment to the transverse carpal ligament, and to the Flexor carpi uinaris and Abductor digiti quinti. 