Carpal instabilities are caused by traumatic injuries to the bones and ligaments of the wrist joint, or by chronic overstretching of the ligaments due to inflammatory or degenerative diseases; an important factor in their development is the anatomical shape of the bones and their articular surfaces. According to their location, they are classified as radial (lateral), medial, and proximal carpal instabilities. The different types are described, especially with regard to their radiological signs; static and dynamic instabilities are distinguished. The common therapeutic strategies are reconstruction of ligaments, intercarpal arthrodesis, or correction osteotomy of the radius.