Home Body Atlas Ligaments Second MTP Medial Collateral Ligament
Ligament Foot & Ankle

Second MTP Medial Collateral Ligament

ligamentum collaterale mediale articulationis metatarsophalangealis secundi

The medial collateral ligament of the second MTP joint connects the medial second metatarsal head to the medial second toe proximal phalanx base.

Region: Foot & Ankle
Biomechanics

Function & Actions

Resists lateral deviation of the second toe, provides medial MTP joint stability, and is the ligament that attenuates in second toe crossover deformity.

Clinical Relevance

Clinical Notes

Second MTP medial collateral attenuation allows the second toe to cross over the hallux in crossover toe deformity — a progressive instability from chronic plantar plate and collateral laxity in hallux valgus patients.

Pathology

Common Injuries & Conditions

Second Toe Crossover Deformity from MCL Attenuation

Medial collateral and plantar plate laxity at the second MTP producing progressive second toe medial deviation crossing over the hallux, managed by plantar plate repair and MTP arthroplasty.

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