The Cleveland Cavaliers have confirmed All-Star center Jarrett Allen will be sidelined indefinitely after being diagnosed with a left middle finger fracture.

Allen suffered the injury in Sunday's 104-96 win over the Toronto Raptors that improved the Cavs' record to 37-27.

The 23-year-old only played 10 minutes, scoring six points with two rebounds, before sustaining a quad injury that forced him out of the game, with the finger issue later emerging.

"A CT scan administered today at Cleveland Clinic Sports Health revealed a fracture and he will undergo additional evaluation and treatment," the Cavs said in a statement on Monday.

"No timetable has been set for his return to basketball activities and his status will be updated as appropriate."

Allen has been a key part of the Cavs' surprise playoffs push, averaging 16.1 points, 10.8 rebounds and 1.3 blocks this season.

The Cavs are already missing Collin Sexton (knee), Caris LeVert (foot) and Rajon Rondo who was signed after Ricky Rubio's season-ending ACL injury.

Allen got his maiden All-Star call-up this season as a replacement for the injured James Harden.