Which activity is commonly associated with ACL injury?

Which activity is commonly associated with ACL injury?

• A. Sport participation that involves cutting, pivoting, or landing from a jump
• B. Endurance running
• C. Non-contact hand activity
• D. Swimming

Answer: (A)

ACL injuries are most likely during movements that force the knee to twist or stop abruptly, especially when the foot is planted. Cutting, pivoting, or landing from a jump create large rotational and anterior forces on the knee, stressing the ACL and often leading to tearing. This is why activities that involve rapid direction changes and jump-landing—common in many ball sports and court sports—are classic contexts for ACL injury. In contrast, endurance running mostly involves straight-ahead, repetitive motion with fewer sudden twists or high-impact landings; non‑contact hand activities don’t involve the knee, and swimming keeps knee forces relatively low, making these less associated with ACL tears.

ACL injuries are most likely during movements that force the knee to twist or stop abruptly, especially when the foot is planted. Cutting, pivoting, or landing from a jump create large rotational and anterior forces on the knee, stressing the ACL and often leading to tearing. This is why activities that involve rapid direction changes and jump-landing—common in many ball sports and court sports—are classic contexts for ACL injury. In contrast, endurance running mostly involves straight-ahead, repetitive motion with fewer sudden twists or high-impact landings; non‑contact hand activities don’t involve the knee, and swimming keeps knee forces relatively low, making these less associated with ACL tears.