Thank you for the opportunity to answer your question. I am sending this answer to you only a few minutes after you submitted your question.
Yes. It is possible that a photographer (like any other business) could be exposed to liability in a variety of ways if an individual (such as a model) is injured during the course of business. Some examples:
A model claims that her image was commercially used in a fashion other than that which was authorized;
A model claims that private pictures were made public (for instance, with nude photos);
A model is injured on a photographer's premises due to negligence or failure to warn of hazards;
A model is injured due to a prop malfunction where the photographer provided a defective or dangerous prop;
A model without a contract
claims that an oral agreement included compensation that was not received.
As you can see, there are a variety of ways liability could arise. This doesn't mean that it's likely, but it also doesn't mean that it isn't. Obviously, the more dangerous the activities involved, the greater the probability of injury and legal action resulting from injury. You may wish to discuss with your attorney the possibility of insurance, drafting liability waivers, and drafting modeling contracts so as to ensure that your interests are covered. In the process, your attorney will review the types of photography and the variety of issues that may arise to do his best to draft documents to provide as much protection as possible.