Durant, sidelined for Houston's 115-96 win over the Lakers in Game 4, has missed three of four playoff games due to injury.
Coach Ime Udoka confirmed Durant is day-to-day, with his status for Game 5 in Los Angeles still uncertain as he works to reduce swelling and regain mobility.
Durant, in his first season with Houston after a trade from Phoenix, previously returned for Game 2 but aggravated his ankle, impacting the Rockets' playoff campaign.
How much did the Lakers' own injuries contribute to their stunning Game 4 collapse in Houston?
With no team ever overcoming a 3-0 deficit, is a potential Durant return just false hope for Houston?
Why did Kevin Durant commit a career-high nine turnovers in the game he sustained his ankle injury?
What are the career-altering risks for a 37-year-old star returning early from a painful bone bruise?
Did the Rockets' record-setting defense in Game 4 reveal a better team identity without Kevin Durant?
Does Houston's playoff struggle highlight the risks of building a 'win-now' team around an aging superstar?