Inferior angle of scapula lies at –

**Core Concept**
The inferior angle of the scapula is a significant anatomical landmark, and its location is crucial for various medical procedures, including injections and surgical approaches. The scapula is a triangular bone that forms the posterior aspect of the shoulder girdle, and its angles are important for understanding its orientation and relationship with surrounding structures.

**Why the Correct Answer is Right**
The inferior angle of the scapula is the lowest point on the scapula and is situated at the level of the 7th thoracic vertebra (T7). This landmark is often used as a reference point for injections, such as the intramuscular injection of vaccines, and for surgical approaches to the lower thoracic spine and upper abdomen. The location of the inferior angle is also important for understanding the scapular rotation and its relationship with the thoracic spine.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the superior angle of the scapula is located at the level of the 2nd thoracic vertebra (T2), which is much higher than the inferior angle.
* **Option B:** This option is incorrect because the lateral angle of the scapula is not a standard anatomical landmark and is not a reliable reference point for injections or surgical approaches.
* **Option C:** This option is incorrect because the medial border of the scapula is not a landmark that corresponds to the inferior angle.

**Clinical Pearl / High-Yield Fact**
The inferior angle of the scapula is often used as a reference point for injections, and its location can be remembered using the mnemonic "T7" (7th thoracic vertebra).

**Correct Answer: C. 7th thoracic vertebra.**