- Joints of the proximal row
- Joints of the distal row
- The midcarpal joint between the two rows
- The pisotriquetral joint between pisiform and triquetral.
Joints of the proximal row
Each adjacent carpal bone in the proximal row articulates with an adjacent partner, such that the scaphoid has an articular surface with the lunate, the lunate one with scaphoid and one with triquetral, and the triquetral one with lunate (note also the separate pisotriquetral joint).
A transverse palmar ligament and dorsal ligament connect the three main bones of the palmar row. The palmar ligaments tend to be weaker.
Two interosseous ligaments attach the proximal poles of scaphoid and lunate and lunate and triquetral, respectively, contributing to their articular surfaces at the wrist.
Joints of the distal row
Each adjacent carpal bone in the distal row articulates with those adjacent to it, such that the trapezium has an articular surface with the trapezoid, the trapezoid one with trapezium and one with capitate, the capitate one with trapezoid and one with hamate, and hamate one with capitate.
A transverse palmar ligament and dorsal ligament connect the four main bones of the distal row.
Three interosseous ligaments link between adjacent bones (trapezium and trapezoid, trapezoid and capitate, capitate and hamate); only the one between capitate and hamate is invariably present.