Psoriasis: The most common skin disorder that also affects the joints, including the knees, is psoriasis. Although certainly not all patients with psoriasis will develop joint problems, psoriatic arthritis may cause knee pain and swelling. ...Read more.
Definition of accident. 1  1a : an unforeseen and unplanned event or circumstance Their meeting was an accident.b : lack of intention or necessity : chance They met by accident rather than by design.
1 Introduction. 2 Definitions of accidents and incidents 2.1 The definition of an accident at work in the context of accident prevention. 2.2 The definition of an accident at work in the context of Workers' Compensation Systems. 2.3 The definition of an accident in the context of statistical data.