Pain & tenderness over the lateral condyle of humerus with a painful dorsi flexion of the wrist is indicative of –
**Core Concept**
The question is testing the understanding of **radial tunnel syndrome**, a condition characterized by pain and tenderness over the lateral condyle of the humerus. This syndrome is often associated with **posterior interosseous nerve** compression.
**Why the Correct Answer is Right**
Radial tunnel syndrome presents with pain over the lateral condyle of the humerus and is exacerbated by activities that stretch or compress the radial nerve, such as **dorsi flexion of the wrist**. The posterior interosseous nerve, a branch of the radial nerve, is commonly involved.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it does not specifically relate to the symptoms described.
**Option B:** Incorrect as it is more commonly associated with median nerve compression.
**Option C:** Incorrect because, although it involves nerve compression, the symptoms do not match those described.
**Clinical Pearl / High-Yield Fact**
Radial tunnel syndrome is often confused with **tennis elbow** but is distinguished by the presence of pain with dorsi flexion of the wrist and tenderness over the radial tunnel.
**Correct Answer:** D. Radial tunnel syndrome.