Question

What is the device/implant shown in this following picture used for femur neck fracture?

• A. Condylar plate
• B. Dynamic condylar screw
• C. Dynamic hip screw
• D. Locking plate

Hint:

The dynamic hip screw is specifically designed for femoral neck fractures, providing stable fixation and promoting healing through controlled compression.

Answer 1

The Correct Option is C

The device or implant commonly used for femur neck fractures is the Dynamic Hip Screw (DHS). It is specifically designed to address the unique challenges of stabilizing fractures near the femoral neck, allowing for effective redistribution of forces during ambulation to promote healing.

Explanation:

1. Design: DHS comprises a lag screw inserted into the femoral head, connected to a side plate fixed to the femoral shaft. This allows for dynamic compression at the fracture site, aiding in fracture healing.
2. Mechanism: Upon weight bearing, the design of the DHS permits controlled sliding of the lag screw, thereby maintaining compression at the fracture site to stabilize the fracture effectively.
3. Indications: DHS is most appropriate for stable intertrochanteric fractures and certain types of femoral neck fractures where intrinsic stability or minimal comminution is observed.

This implant is preferred due to its biomechanical efficiency in managing femoral neck fractures, differentiating it from other options like the Condylar Plate, Dynamic Condylar Screw, or Locking Plate.