Expat New Zealand jockey Michael Walker is set to undergo more surgery following a fall at Pakenham in May.

He developed Compartment Syndrome, a painful condition that is caused by a build-up of pressure due to internal bleeding and swelling, and he has subsequently undergone a number of surgeries on his leg.

Walker will now undergo a full knee reconstruction, which will likely take place early next month.

“It is what it is, if I’ve got to get it done, I’ve got to get it done, I want to give myself the best chance of riding again,” Walker told Racing.com.

“I spoke with Gary Zimmerman (doctor) on Monday and he was thinking with further rehab and more time that we might be able to avoid a reconstruction but then I went and saw David Young, who performed the surgery when I had my hip replacement, he said to me I need a full reconstruction.

“I would have liked to have got it done as soon as possible but unfortunately my leg is just too weak and the muscle has dropped away, so I need to do a round of physiotherapy to strengthen it up before I can go under the knife again.”