Capsular Ligament:

• * This is thick in front and thin behind.                                                                                                                                                                                                                                                                                                            .                                                                                

Palmar Ligament:

• * This is a strong fibrocartilaginous plate, which replaces the anterior part of the capsule.
• * More firmly attached to the phalanx than to the metacarpal.

Collateral Ligaments:

• * These are oblique bands placed at the sides of the joint.
• * Each runs downwards and forwards from the head of the metacarpal bone to the base of the phalanx.
• * These are taut in flexion and relaxed in extension.