While helmets certainly help to protect motorcyclists from serious injury, they cannot prevent all injuries. The person who caused the accident is still responsible for your injuries.
However, you should know that the other driver's insurance company might accuse you of causing additional injury to yourself by not wearing a helmet. This scenario is likely if you received any head injury or brain trauma in the crash.
Their accusations could reduce the amount of compensation you receive from the driver who caused the accident.
Motorcycle accident lawsuits can be tricky, so you may want to consider hiring a skilled Maryland personal injury attorney who can help you get the most compensation possible for your injuries.