Bindi Irwin has revealed she is on the mend after undergoing emergency surgery in the US to remove her appendix.

Alongside a carousel of photos – including one from her hospital bed – the 26-year-old wrote on Instagram she was healing.

“Healing. Thank you for your incredible words of support and kindness.

“The reason I share my health journey is because more girls and women desperately need answers to their undiagnosed pain,” she said.

“I’ve battled with endometriosis for more than 12 years. This disease is crippling and can make you feel incredibly isolated. We need to raise awareness and change the narrative for women’s health.”

Endometriosis causes tissue similar to the lining of the uterus to grow outside the uterus.

Irwin recently missed her late father Steve Irwin’s annual gala in Las Vegas after rupturing her appendix.

Robert Irwin, her brother, subsequently explained the reason for her absence.

“She’s going to be OK, but surgery – out of all the things we were ready for, that was not one of them. She’s just come out the other side of endometriosis and now the appendix goes. Health is so important – it really is,” he told People.