Question

Differentiate the locations of Chopart, Lisfranc, and Transmetatarsal amputations:

Option 1: Chopart - just distal to the talus
Option 2: Lisfranc - from the metatarsals and distal
Option 3: Transmetatarsal - middle of the metatarsals
Option 4: Lisfranc - just distal to the talus

Answer 1

Chopart, Lisfranc, and Transmetatarsal amputations are distinct in where they occur on the foot: Chopart at the midtarsal joints, Lisfranc through the tarsometatarsal joints, and Transmetatarsal across the metatarsal bones.

Step-by-step explanation:

The locations of Chopart, Lisfranc, and Transmetatarsal amputations differ in terms of the anatomical structures involved in the foot:

• Chopart amputation is executed through the midtarsal joints, which are joints between the talus and calcaneus proximally, and the navicular and cuboid bones distally. Therefore, the amputation is between the proximal and distal groups of the tarsal bones, not just distal to the talus.
• Lisfranc amputation involves the tarsometatarsal joints, which are the connection points between the distal row of tarsal bones (cuboid and cuneiforms) and the bases of the metatarsal bones. This option correctly states that it is from the metatarsals and distal.
• Transmetatarsal amputation is carried out across the metatarsal bones, typically through the middle of these bones, effectively removing the distal portions of the metatarsals along with the phalanges of the toes.