74.—(1) In these Regulations—
“infirmity” means a disease, injury, or medical condition, and includes a mental disorder, injury or condition;
“injury” includes any injury or disease, whether of body or of mind; and
“medical unfitness”, in relation to a member of a police force or a former member of a police force, means inability occasioned by infirmity of mind or body—
to perform the ordinary duties of a member of the police force; or
to engage in any regular employment.
(2) For the purpose of this Part, “ordinary duties of a member of the police force” in relation to a former member of a home police force means the ordinary duties of a member of the home police force.