**Core Concept**
Clavicular fractures are a common type of injury, often resulting from falls, motor vehicle accidents, or direct trauma to the shoulder. The treatment approach for clavicular fractures depends on the fracture type, displacement, and patient factors such as age and overall health.

**Why the Correct Answer is Right**
The majority of clavicular fractures are treated conservatively with immobilization using a figure-of-eight bandage or a sling. This approach allows for early mobilization and minimizes the risk of complications such as malunion, nonunion, or neurovascular injury. The goal of conservative management is to promote fracture healing while maintaining shoulder mobility and function.

**Why Each Wrong Option is Incorrect**
**Option A:** Surgical fixation is typically reserved for displaced fractures with significant comminution or neurovascular compromise, not as a primary treatment.
**Option B:** Arthroscopic reduction is not a standard treatment for clavicular fractures, as it is more commonly used for shoulder joint injuries.
**Option C:** External fixation is not typically used for clavicular fractures, as it can cause additional soft tissue injury and is not as effective as conservative management.

**Clinical Pearl / High-Yield Fact**
In patients with clavicular fractures, it is essential to assess for potential neurovascular compromise, particularly the axillary nerve and subclavian artery, and to monitor for complications such as malunion or nonunion.

**Correct Answer: C. External fixation is not typically used for clavicular fractures, as it can cause additional soft tissue injury and is not as effective as conservative management.**