In condylar fracture, anatomy of the joint get disturbed but function is normal, this type of joint is known as:
**Core Concept**
The question is testing the student's understanding of joint stability and function in the context of condylar fractures. The condyle is a bony prominence that forms the articulation of the mandible with the temporal bone, and fractures in this area can compromise the joint's anatomy. However, the question specifies that the function is normal, indicating that the joint remains stable.
**Why the Correct Answer is Right**
The correct answer is related to the concept of joint stability and function. In the context of condylar fractures, the joint may appear anatomically disrupted, but if the fracture does not significantly compromise the joint's stability or function, it is considered a **non-displaced fracture**. This type of fracture allows the joint to maintain its normal function, despite the apparent disturbance in anatomy.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the context of condylar fractures and joint stability.
* **Option B:** This option may be related to joint instability, but it is not the correct answer in the context of condylar fractures.
* **Option D:** This option is not relevant to the context of condylar fractures and joint stability.
**Clinical Pearl / High-Yield Fact**
In the context of condylar fractures, the presence of a non-displaced fracture does not necessarily indicate a good prognosis. The patient may still experience long-term complications, such as joint pain or limited mobility, due to the initial disturbance in joint anatomy.
**Correct Answer: C. Non-displaced fracture**