pisiform joint pisiform joint the pisiform joint is a joint between the pisiform and triquetrum. pisiform jointvertical section through the articulations at the wrist, showing the synovial cavities.shown is the right hand, palm down (left) and palm up (right).proximal: a=scaphoid, b=lunate, c=triquetral, d=pisiformdistal: e=trapezium, f=trapezoid, g=capitate, h=hamatedetailsidentifierslatinarticulatio ossis pisiformista98a03.5.11.107ta21824fma73126anatomical terminology it includes the pisohamate ligament and pisometacarpal ligament.