• Abby Lee Miller and Maddie Ziegler from "Dance Moms"

Abby Lee Miller and Maddie Ziegler from "Dance Moms" (Photo : Instagram )

"Dance Moms" star and ALDC coach Abby Lee Miller recently underwent a medical procedure.

According to IBTimes, the reality TV star had a surgery in her knee. However, she didn't explain why she needed to get one.

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On her Instagram account, the controversial coach shared a phot of what appeared to be her right knee being injected on.

"I've needed surgery for quite some time now. I keep putting my students first and the TV show #DanceMoms first, before my own health. The time has come... Keep your fingers crossed!" she captioned the photo.

The day after, Miller updated her fans on her procedure by sharing a photo of herself wearing a hospital gown.

At that time, Miller revealed that her knee procedure wasn't very serious because she actually gets it every few months.

"This was the real deal!!! Thank you for all the well wishes! I appreciate each and every one of you!!!" she wrote.

Meanwhile, according to the same publication, Miller previously went under the knife to undergo a weight loss lap-band procedure. However, until today, Miller has not yet confirmed the reports.

At that time, Miller said that she lost a lot of weight because her mom got sick. The latter passed away in 2014.

In other news, while speaking to People, Miller explained one of the other reasons why she drastically lost weight.

"While you're in and out of the hospital, the hospital food just makes you sick. I think it was a little bit mental with me. I had to get a prescription refilled. Lo and behold, there's something different about the prescription in Australia. I would take this medicine and within an hour I was vomiting.

As a result, it became a little bit too difficult for her to consume any type of food.

Miller currently appears on the hit Lifetime reality TV show "Dance Moms." The upcoming episode will also serve as Maddie and Mackenzie Ziegler's last episode on the show.

The teaser revealed that Miller will slam the older Ziegler during the latter's last episode this week.

"Dance Moms" season 6, episode 18 will air on Lifetime on May 3 at 9 p.m. ET.