**Core Concept**
Tarsometatarsal amputation refers to a surgical procedure involving the removal of the forefoot, specifically at the junction between the tarsal bones and the metatarsal bones. This type of amputation is also known as Lisfranc's amputation.

**Why the Correct Answer is Right**
The tarsometatarsal amputation is performed at the Lisfranc joint, which is the articulation between the tarsal bones (including the cuneiform, cuboid, and navicular bones) and the metatarsal bones. This joint is located proximal to the metatarsophalangeal joints and distal to the tarsal tunnel. The Lisfranc joint is a crucial weight-bearing joint in the foot, and an amputation at this level is designed to preserve as much function as possible while still allowing for healing and mobility.

**Why Each Wrong Option is Incorrect**
**Option A:** Chopart's amputation is performed at the midtarsal joint, which is located between the talus and calcaneus bones and the cuneiform, cuboid, and navicular bones. This type of amputation is different from the tarsometatarsal amputation.
**Option B:** Syme's amputation is a type of ankle disarticulation, where the entire ankle joint is removed. This is not the same as a tarsometatarsal amputation.
**Option C:** Transmetatarsal amputation is performed at the level of the metatarsal bones, but not at the tarsometatarsal joint itself. This type of amputation is more distal than a tarsometatarsal amputation.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the choice of amputation level depends on the patient's overall health, the presence of comorbidities, and the specific indications for amputation. A thorough understanding of the anatomy and potential complications of each type of amputation is crucial for optimal patient outcomes.

**Correct Answer: C. Transmetatarsal amputation.