New York Knicks centre Mitchell Robinson has sustained a fractured right pinkie finger, and there is currently no established timeline for his return to competition, according to a person familiar with the matter.

The individual spoke to The Associated Press on condition of anonymity on Thursday because the organisation had not formally disclosed the medical development.

The Knicks are scheduled to contest Game 1 of the NBA Finals next Wednesday on the road against either the Oklahoma City Thunder or the San Antonio Spurs.

Robinson participated in 13 of New York’s initial 16 postseason matchups through the first three rounds of the playoffs, which included more than 17 minutes of action off the bench during the Eastern Conference finals-clinching victory at Cleveland. The squad resumed training at its home facility on Thursday.

The precise moment of Robinson's injury remains unconfirmed, though broadcast footage reveals him clutching his right hand and shaking it while retreating down the court with 5:35 remaining in the third quarter Monday night. The gesture occurred after he descended from an attempt to secure a rebound off a missed shot by teammate Mikal Bridges. He continued to play intermittently until 7:47 remained in the fourth quarter.

The Knicks have established a 12-2 record during the postseason, maintaining an average victory margin of 19.4 points per game while securing 11 consecutive victories. The stretch is tied for the third-longest single-postseason winning streak in league history.

The 28-year-old centre is averaging 5.3 points and 3.0 rebounds during the playoffs, operating in a reserve capacity to provide frontcourt depth and relieve starter Karl-Anthony Towns during periods of foul trouble. On the offensive end of the floor, Robinson has frequently been targeted by opposing teams utilising deliberate fouling strategies due to his historical struggles at the free-throw line, where he has converted 13 of 43 attempts (30.2 per cent).

ESPN was the first outlet to report the diagnosis of Robinson's fractured finger.

With inputs from AP