Murray turned his ankle in the latter stages of a third-round defeat by Tomas Machac on Sunday and continued playing, seemingly untroubled by the injury.
But, following a scan, the Briton revealed he had suffered a full rupture of his anterior talofibular ligament and a near-full-thickness rupture of his calcaneofibular ligament.
Murray was set to see an ankle specialist on his return to the UK this week to determine his steps to recovery, which is expected to take anything from six to 12 weeks.
The 36-year-old has declared a desire to play the French Open and a full grasscourt calendar, including Wimbledon, where he is a two-time champion, with the Olympics acting as a possible swansong to his illustrious career. He has already made it clear he does not seem himself playing much beyond this summer.
Announcing the news on social media last night, he wrote: “Yesterday, towards the end of my match in Miami, I suffered a full rupture of my ATFL and near full thickness rupture of my CFL.
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
Why are England wasting time waiting for Tuchel?
Winning the World Cup is the aim, so the new boss should start now
He's been shot, and punched by Mike Tyson, but British boxing's great survivor is back on top and aiming to rule the world
This is where the magic happens,\" reads a big neon sign scrawled across the entrance to the offices of arguably the most powerful man in British boxing today.
How Sketch went from 'obscene' to era-defining
After arocky start, the glamorous and infamous restaurant is now an institution
Money is worth less than time'
He's quit Fendi, but what will Kim Jones do next?
London's Roman Amphitheatre
Guildhall Yard, EC2V
Liberals didn't notice they'd lost relevance in the all-consuming digital sphere
There are many reasons why Donald Trump might have won the election last week.
Do we have to die?
One neuroscientist thinks the answer is no
How to have a magical Christmas in Edinburgh
From cosy cobblestone streets to abundant Yuletide goings-on, few cities rival the Scottish capital in creating Christmas whimsy.
London's best festive restaurants
The social season is upon us once more. These are the city’s most coveted Christmas venues, which need to be booked soon so as to not miss out on the tinsel and tipples.
Rag'n'Bone Man
I struggle with being recognised... I'll never really feel comfortable with it'
