Reporter: Maybe her hip was torn this way. The labral tear in her right hip, forcing lady gaga to cancel her tour. And on wednesday, going under the knife. The hip joint is a complex joint. There's a... See More
Reporter: Maybe her hip was torn this way. The labral tear in her right hip, forcing lady gaga to cancel her tour. And on wednesday, going under the knife. The hip joint is a complex joint. There's a lot involved in this surgery. And a lot involved in recovery. Reporter: On her way into the o.R., Gaga sent this I'll be kind tweet to her little monsters. Going in for surgery now. Thank you so much for sending me love and support. I will be dreaming of you. Prior to getting her procedure, gaga named her wheelchair after a fan. Tweeting, this is emma. But it's clear being out of commission turns the "bad romance" singernto ga, ga, yaey. I'm devastated and sad. I hate this. I hate this so much. But once in recovery overnight, it was all about the love. Telling her little monsters online, I love you and I'm proud to be a part of your lives. If you can do it, I can do it, Gaga figures to be on track for a full recovery. But is looking at plenty of rehab. The physical therapy and rehab is extensive. Reporter: Still, gaga's fan base will be filled with that you and I feeling. As much as they love her, she loves them right back. ♪ You and I ♪ the rehabilitation or recovery after this type of surgery is generally around four months. After that period of time, the expectation is no limitations. Reporter: No limitations for lady gaga? ♪ I'm on the edge of glory ♪ Reporter: For "good morning america," chris connelly, abc news, new york. If only he could have heard that bell ringing. There was a lot. Very impressive. We wish gaga the best. And coming up right here,
This transcript has been automatically generated and may not be 100% accurate.