Which manoeuvre is being shown below?
**Core Concept**
The image depicts a medical procedure involving the movement of a joint, specifically the shoulder joint. The correct answer requires knowledge of shoulder anatomy and common examination techniques used in orthopedic and emergency medicine.
**Why the Correct Answer is Right**
The manoeuvre shown is a type of shoulder reduction, where the arm is relocated to its normal anatomical position. This is often performed in cases of anterior shoulder dislocation, where the humeral head is displaced from the glenoid cavity. The correct manoeuvre involves a combination of external rotation and downward pressure to facilitate reduction.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not accurately depict the correct sequence of movements required for shoulder reduction. The manoeuvre shown would not be effective in relocating the humeral head.
* **Option B:** This option is incorrect because it involves a different sequence of movements that would not be effective in reducing an anterior shoulder dislocation. The manoeuvre shown would not facilitate the relocation of the humeral head.
* **Option C:** This option is incorrect because it involves a different type of joint movement that is not relevant to shoulder reduction. The manoeuvre shown would not be effective in relocating the humeral head.
**Clinical Pearl / High-Yield Fact**
When performing shoulder reduction, it is essential to maintain proper alignment and avoid applying excessive force, which can lead to further injury or complications. The correct sequence of movements should be performed in a gentle and controlled manner to ensure successful reduction and minimize the risk of complications.
**Correct Answer: C. A gentle downward pressure with external rotation is applied to relocate the humeral head.**