Distinguish between an acute injury and an overuse injury.

• A. Acute injury has a rapid onset from a single event; overuse injury develops from repetitive stress over time
• B. Acute injuries develop gradually over weeks; overuse occurs instantly
• C. Both have identical onset
• D. Overuse injuries are less serious than acute injuries

Answer: (A)

The key distinction is how and when the injury begins. An acute injury presents with a rapid onset resulting from a single event during activity—something happens suddenly, like a twisted ankle or a knee wrench from a hard landing. An overuse injury, on the other hand, emerges from repetitive stress over time, with pain and dysfunction developing gradually as loading accumulates, such as shin splints or tendinopathy from many training sessions. This difference in onset explains why the example of a sudden, single incident fits acute, while gradual, progressive pain fits overuse. The other statements mix up timing or imply a fixed severity relationship, which isn’t reliable because onset timing is the defining factor, and both types can be serious depending on the specifics.