Current review of trapeziometacarpal osteoarthritis (rhizarthrosis)

Table 1 Main ligaments of the trapeziometacarpal joint

Ligament		Description of the function
Dorsoradial (Figure 1)		Shortest and thickest ligament (Recently possible) Primary stabilizer against dorsal translation of the joint Opposes anterior oblique ligaments Basis for Eaton-Littler procedure
Anterior oblique (Figure 1)	Superficial	Stabilization against volar joint subluxation
	Deep	Known as beak ligament Act as a pivot point Primary joint stabilizer against dorsal translation
Posterior oblique		Stabilization of rotation
Intermetacarpal		Stabilization during radiovolar translation Stabilization of the thumb against collapse especially after trapeziectomy
Ulnar collateral		Helps to stabilization against volar joint subluxation