The pensioner suffered a broken hip and facial injuries after the attack in Dreghorn.
The incident happened at 11.30am on Saturday, January 25 in Main Street, near the library.
"We are keen to speak to a man and woman, who had a child’s buggy with them. The man described as in his mid 30's being around five foot, ten inches tall, of medium build with dark hair. He was wearing a dark coloured clothing.
"The woman is described as being in her mid 30's about five foot four inches and was wearing a blue puffa jacket.
"We would also like to speak with any people who may have been waiting at a nearby bus stop."
Anyone with any information is asked to contact Police Scotland on 101, quoting 0961 of 1 February, 2020. Alternatively if you have any information about the incident you can contact the independent charity Crimestoppers 100% anonymously on 0800 555 111 or via their Anonymous Online Form at crimestoppers-uk.org.