Foot Bones & Ligaments😍

• Uniform → 3 Cuneiform

• Medially → Navicular infront of talus

• Laterally → Cuboid

• Back and Lateral → Calcaneous

• Articular → Talus

Ligaments of Foot and Ankle

Spring Ligament

• Plantar Calcaneonavicular Ligament
• On plantar surface.
• Calcaneum → Navicular tuberosity.

• Functions:



• Tear → Flat foot.
• Supports head of talus.

Long and Short Plantar Calcaneocuboid Ligaments

• Support the lateral longitudinal arch.

Deltoid Ligament

• Located on medial side of ankle.

• Strong ligament → prevents eversion.

• Lateral condylar fracture → may cause deltoid ligament tear.

• Provides medial ankle stability.



Part	Connection
Posterior tibiotalar	Tibia to talus
Tibiocalcaneal	Tibia to calcaneum
Tibionavicular	Tibia to navicular
Anterior tibiotalar	Tibia to talus

Sustentaculum Tali

• Projection of calcaneum.

• Supports the talus.

Ligaments of Lateral Ankle

Lateral Collateral Ligament of Ankle

• Located on lateral side of ankle.

• Made of 3 bands:
• Anterior talofibular ligament (ATFL)
• Posterior talofibular ligament
• Calcaneofibular ligament

Anterior Talofibular Ligament

• Most commonly injured ligament.

• Injured in inversion injury.
• When ankle is in plantar flexion.

Lisfranc Ligament

• Ligament between bases of 1st and 2nd metatarsals.
• Tear → Gap between 1st and 2nd metatarsal.

Bifurcate ligament / Chopart ligament

• Calcaneonavicular ligament

• Calcaneocuboid ligament

• Chopart - 2 part

Chopart's Fracture:

• Fracture of the intertarsal joint.

Lisfranc's Fracture:

• Fracture of the tarso-metatarsal joint.

Amputation:

• Intertarsal joint: Chopart's amputation.

• Tarsometatarsal joint: Lisfranc's amputation.