Final answer:
The concept that supports Mike's statement is the importance of early intervention and treatment in preventing the spread of infection and worsening of symptoms.
Step-by-step explanation:
The concept that supports Mike's statement is the importance of early intervention and treatment in preventing the spread of infection and worsening of symptoms. In Mike's case, he had an injury to several tendons and ligaments, and now he is experiencing a stiff neck and weakness on one side of his body. These new symptoms could indicate that the infection has spread. By conducting additional tests, the physician can determine the cause of these symptoms and provide appropriate treatment.