An oblique fracture of olecranon, if displaced proximally. The treatment is:
**Core Concept**
An olecranon fracture is a break in the bony prominence at the elbow, which can compromise the stability and function of the elbow joint. In the case of an oblique fracture of the olecranon, displacement can lead to instability and potential complications.
**Why the Correct Answer is Right**
For displaced olecranon fractures, surgical intervention is often necessary to restore the normal anatomy and function of the elbow. The treatment of choice is usually open reduction and internal fixation (ORIF), where the fracture is exposed through an incision, reduced to its correct anatomical position, and stabilized with plates and screws. This allows for early mobilization and prevents complications such as nonunion or malunion.
**Why Each Wrong Option is Incorrect**
* **Option A:** Closed reduction and casting may be sufficient for non-displaced olecranon fractures, but it is not the treatment of choice for displaced fractures.
* **Option B:** Arthroscopy may be used as an adjunct to ORIF to assess the joint and remove any loose fragments, but it is not the primary treatment for displaced olecranon fractures.
* **Option C:** External fixation may be used in some cases of olecranon fractures, but it is not the preferred treatment for displaced fractures that require precise reduction and stabilization.
**Clinical Pearl / High-Yield Fact**
Remember that the treatment of olecranon fractures depends on the degree of displacement and the patient's overall health. Early surgical intervention can improve outcomes and prevent complications.
**Correct Answer: C. ORIF (Open Reduction and Internal Fixation)**