The 32-year-old insured person injured his left knee while playing football, when he experienced excessive external rotation with his left leg during a braking movement. There was a loud bang in the left knee. Is the concept of an accident fulfilled in this case?
March 3, 2025
Liability and Insurance Law
Definition of the concept of accident in accident insurance
To determine whether the concept of an accident is fulfilled in this case of damage, the criteria of the accident concept according to Art. 4 ATSG should be examined. According to Art. 4 ATSG, an accident exists if the following five elements are cumulatively present: a sudden, unintended harmful impact of an unusual external factor on the human body, which results in an impairment of physical, mental, or psychological health (Art. 4 ATSG).
1. Suddenness: The accident must occur within a short, definable time period. In your case, the injury occurred while playing soccer due to a braking motion, accompanied by a loud bang in the knee. This indicates the suddenness of the impact. 2. Unintendedness: The impact must occur unintentionally. This is clearly an unintended movement, as the insured did not intentionally induce an excessive external rotation of the leg. 3. Harmful impact: There must be a harmful impact. A loud bang in the knee, followed by an injury, indicates a harmful impact. 4. Unusual external factor: An unusual external factor may also consist of an uncoordinated movement if a circumstance based in the external world has influenced the natural process of a body movement "contrary to the program," such as slipping or stumbling (UV 2023/31).
- The case of excessive external rotation can be classified as an uncoordinated movement, which meets the criteria of an unusual external factor. However, the fact that a such an injury can occur while playing soccer presents a particular challenge. If the braking motion were part of the normal athletic activity without unusual external impact, the extraordinary nature of the factor might possibly not be fulfilled.
5. Causality: There must be a connection between the impact and the health impairment. According to the definition of the accident concept, the event must be the primary cause of the health impairment (ATAS/477/2024).
Based on the above considerations, it can be assumed that the essential elements of an accident occurrence are present. In particular, the unusualness of the external impact is given due to the sudden, uncoordinated movement that led to an excessive external rotation and interrupted the natural movement process (UV 2023/31).
Overall, the concept of an accident seems to be fulfilled, but it would be wise to provide additional medical evidence that confirms the immediate and programmatic impact of the movement (Art. 4 ATSG; UV 2023/31; ATAS/477/2024).
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