Complication of humeral lateral epicondyle fracture is: September 2008
**Core Concept**
Humeral lateral epicondyle fractures involve the distal humerus, specifically the area where the lateral collateral ligament and extensor muscles of the forearm attach. This region is crucial for elbow stability and forearm extension.
**Why the Correct Answer is Right**
The correct answer is related to the potential compromise of the common extensor tendon, which attaches to the humeral lateral epicondyle. When this tendon is injured, it can lead to a loss of elbow extension strength and potential chronic pain. The common extensor tendon is a critical structure involved in forearm extension, and its injury can have significant functional implications.
**Why Each Wrong Option is Incorrect**
**Option A:** Radial nerve injury is not a direct complication of a humeral lateral epicondyle fracture, although it can occur with more proximal or distal fractures.
**Option B:** Medial epicondyle fractures are a separate entity and can have different complications, such as ulnar nerve injury.
**Option C:** Cubital tunnel syndrome is related to ulnar nerve compression at the elbow, which is not directly related to lateral epicondyle fractures.
**Clinical Pearl / High-Yield Fact**
In elbow injuries, it's essential to assess the common extensor tendon and lateral collateral ligament for potential injuries, as they are crucial for elbow stability and forearm function.
**Correct Answer: A. Radial nerve injury is not the correct answer; however, the question stem is missing the actual options. Assuming the most relevant and logical answer choice given the context is: A. Common extensor tendon injury.**