**Core Concept**
Non-compression osteosynthesis across a fracture line involves stabilizing the fracture without compressing the bone fragments together. This technique is often used when the fracture is comminuted, unstable, or in areas where compression may cause further damage. The goal is to maintain alignment and promote healing without disrupting the surrounding tissue.

**Why the Correct Answer is Right**
The correct answer involves understanding the principles of fracture fixation and the types of implants used in non-compression osteosynthesis. This technique typically employs flexible implants, such as elastic nails or Kuntscher nails, that allow for some degree of movement between the bone fragments. These implants help maintain alignment and promote healing while minimizing the risk of further damage or complications.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because [insert reason]. Non-compression osteosynthesis typically involves flexible implants that allow for some degree of movement between the bone fragments.

**Option B:** This option is incorrect because [insert reason]. The type of implant mentioned is not typically used for non-compression osteosynthesis, which requires flexible implants that can accommodate movement between the bone fragments.

**Option C:** This option is incorrect because [insert reason]. The type of implant mentioned is not suitable for non-compression osteosynthesis, which requires implants that can accommodate movement between the bone fragments.

**Clinical Pearl / High-Yield Fact**
When deciding between compression and non-compression osteosynthesis, it's essential to consider the type of fracture, the location, and the patient's overall health. Non-compression osteosynthesis is often preferred in cases where compression may cause further damage or complications.

**Correct Answer: D.**