The strength of a personal injury case can be affected by several factors. Here are some of the key factors that can impact the strength of your case:

1. Liability: Liability is a critical factor in any personal injury case. If you can establish that the defendant was at fault for the accident that caused your injuries, your case will be stronger.

2. Damages: The severity of your injuries and the amount of damages you are seeking can impact the strength of your case. Cases involving significant injuries and substantial damages are generally considered to be stronger.

3. Evidence: The strength and credibility of the evidence you have to support your case can also impact its strength. This can include medical records, accident reports, witness statements, and expert testimony.

4. Timing: The timing of your case can also impact its strength. In some cases, waiting too long to file a claim or to seek medical treatment can weaken your case.

5. Pre-existing conditions: If you had pre-existing conditions that were aggravated by the accident, this can impact the strength of your case. Defendants may argue that your injuries were not caused by the accident, but rather by pre-existing conditions.

6. Contributory negligence: If you were partially at fault for the accident that caused your injuries, this can impact the strength of your case. Defendants may argue that your damages should be reduced to reflect your percentage of fault.

7. Jurisdiction: The laws and legal procedures in your jurisdiction can also impact the strength of your case. It's important to work with an attorney who is familiar with the laws and legal procedures in your jurisdiction.

These are just a few of the many factors that can impact the strength of a personal injury case. It's important to work with an experienced personal injury attorney who can help you evaluate the strength of your case and develop a strategy to maximize your chances of a favorable outcome.