Second tarsometatarsal joint

The second tarsometatarsal joint is the articulation between the base of the second metatarsal and the medial, intermediate, and lateral cuneiform bones.

This joint is a key component of the Lisfranc joint complex and is notable for its stability, which is conferred by both its bony architecture and strong ligamentous support, particularly the Lisfranc ligament—a robust interosseous ligament connecting the medial cuneiform to the base of the second metatarsal.

The articular surfaces of the second tarsometatarsal joint are generally tall and narrow, with the cuneiform surfaces being larger than those of the metatarsal. The joint surfaces are minimally curved and typically present opposing convexities, which contribute to the joint’s stability and limited mobility.The second metatarsal base is recessed between the medial and lateral cuneiforms, forming a mortise-like configuration that further restricts motion and enhances resistance to dislocation.

Ligamentous support includes dorsal, plantar, and interosseous ligaments, with the plantar ligaments being particularly thick and strong, reducing the risk of pure ligamentous dislocation in this joint.