**Core Concept**
In a transverse fracture of the patella, the bone is broken across the patella in a straight line, making it difficult to maintain the patellar height and alignment. This type of fracture requires a specific treatment approach to ensure proper healing and functional recovery.

**Why the Correct Answer is Right**
The treatment of choice for a transverse patellar fracture is open reduction and internal fixation (ORIF) with a patellar plate or tension band wiring. This method provides stable fixation and allows for early mobilization, which is essential for maintaining knee function and preventing complications such as patellar malalignment or nonunion. The patellar plate or tension band wiring helps to restore the normal anatomy and alignment of the patella, allowing for smooth tracking of the quadriceps tendon and minimizing the risk of complications.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because conservative management, such as immobilization in a cast, is not sufficient to stabilize a transverse patellar fracture and may lead to malunion or nonunion.
**Option B:** This option is incorrect because arthroscopy alone is not adequate for treating a transverse patellar fracture, as it does not provide the necessary stability for fracture healing.
**Option C:** This option is incorrect because a hinged knee brace is not sufficient to stabilize a transverse patellar fracture, as it does not provide the necessary immobilization and support for fracture healing.

**Clinical Pearl / High-Yield Fact**
In the treatment of patellar fractures, it is essential to restore the normal anatomy and alignment of the patella to ensure proper healing and functional recovery. Early mobilization and stable fixation are critical in preventing complications such as patellar malalignment or nonunion.

**Correct Answer: B. Arthroscopic debridement is not the treatment of choice for a transverse patellar fracture.