Oklahoma City Thunder center Kendrick Perkins will miss about six weeks after undergoing a medical procedure on his left groin, the National Basketball Association team announced on Tuesday.

Perkins, who has averaged 3.4 points and 5.0 rebounds in 54 starts, was injured during the third quarter of last Thursday's loss to the Miami Heat and did not play on Sunday against the Los Angeles Clippers.

Rookie Steven Adams has started all three games that Perkins, 29, has missed this season for Oklahoma City, who are in first place in the Northwest Division at 43-14 but have lost their last two games.

Next up for the Thunder will be the visiting Cleveland Cavaliers on Wednesday.