**Core Concept**
Reimplantation of an amputated digit involves a series of surgical steps to restore function and circulation to the affected limb. The initial steps focus on stabilizing the digit and restoring blood flow to prevent further tissue damage.

**Why the Correct Answer is Right**
In the reimplantation of an amputated digit, the **flexor tendons** are fixed first. This is because the flexor tendons provide a mechanical anchor that helps to stabilize the digit and maintain its position. By securing the flexor tendons, the surgeon can establish a stable platform for subsequent repairs, including the reattachment of nerves and vessels. This approach also minimizes the risk of further damage to surrounding tissues.

**Why Each Wrong Option is Incorrect**
**Option A:** The **extensor tendons** are not fixed first during reimplantation. While they are important for digit function, the flexor tendons provide a more stable anchor for initial stabilization.

**Option B:** The **arteries** are not fixed first. While reestablishing blood flow is crucial, the initial focus is on stabilizing the digit and then addressing vascular repair.

**Option C:** The **nerves** are not fixed first. While nerve repair is critical for restoring sensation and motor function, the initial priority is on stabilizing the digit and establishing a stable platform for subsequent repairs.

**Clinical Pearl / High-Yield Fact**
When reimplanting an amputated digit, it's essential to prioritize the fixation of flexor tendons to establish a stable platform for subsequent repairs. This approach helps minimize tissue damage and promotes optimal outcomes.

**Correct Answer:** C. Flexor tendons.