**Core Concept**
The Modified Kocher's technique is a method for reducing a dislocated shoulder. It involves a specific sequence of movements to safely and effectively relocate the humerus into the glenoid cavity. This technique requires careful consideration of the forces applied to the affected limb.

**Why the Correct Answer is Right**
The correct sequence for reducing a dislocated shoulder using Modified Kocher's technique is: (1) **traction** to align the bones, (2) **internal rotation** to reduce the humeral head into the glenoid cavity, and (3) **external rotation** to stabilize the joint. This sequence is crucial to avoid nerve damage, particularly to the axillary nerve, which is at risk during shoulder reduction.

* **Option B (Adduction):** Adduction is not a primary force in the Modified Kocher's technique. It may even be counterproductive, as excessive adduction can cause further injury to the surrounding tissues.
* **Option C (External Rotation):** External rotation is a crucial step in the Modified Kocher's technique, but it should be applied after internal rotation to stabilize the joint. Applying external rotation first can lead to unsuccessful reduction or even nerve damage.
* **Option D (Internal Rotation):** Internal rotation is a critical component of the Modified Kocher's technique, but it should be applied after traction to facilitate the reduction of the humeral head into the glenoid cavity.

**Clinical Pearl / High-Yield Fact**
When performing the Modified Kocher's technique, it is essential to maintain traction throughout the maneuver to prevent the humeral head from subluxating back out of the glenoid cavity.

**Correct Answer: B. Traction**