Partygoers spilled on to the road and police, some in riot gear, turned up.
The officers were pelted with bottles, and one suffered a serious head gash.
They called in reinforcements, and five people were arrested for disorder offences, although the person who threw the bottle wasn't identified.
Later in the day, when the Herald visited, blood stains were on the road where glass shards remained, even after some partygoers had returned to clean up.
Neighbours spent much of the morning picking up glass from their yards.
One woman who had called 111 said it was "absolute chaos", with loud voices "cussing" and shouting.
Police said the injured officer needed medical treatment for the gash.