Yes. In most other injury claims, you don’t have to figure for long-term or permanent disabilities. When you suffer a catastrophic injury, it usually leads to permanent disabilities that could require additional surgeries, follow-up appointments, therapies, life-long care, and special accommodations.
Your attorney also has to figure for future lost wages and other damages for the long-term instead of for the few weeks or months it might take you to recover from non-catastrophic injuries.