The Direct Anterior Approach (DAA) is well established as a muscle-sparing technique for primary hip replacement, working through a natural interval between muscles rather than cutting through them.

As surgeon experience with DAA has grown, an increasing number of specialists are now applying the same approach to revision hip surgery, when a previous replacement has failed and needs to be redone.

What does the evidence show?

A 2024 systematic review covering 21 studies and over 1,600 patients found that DAA use has expanded from primary hip replacement into revision surgery, most often for aseptic loosening and wear of the plastic liner, with most of these studies focused primarily on acetabular revision or head and liner exchanges rather than major reconstruction. The evidence base is still developing, and the review’s authors were cautious given that all included studies were retrospective, and the majority were rated poor to moderate quality on formal assessment.

A separate systematic review of 319 DAA revisions reported a complication rate of 16%, alongside a statistically significant improvement in patients’ functional scores across every study that measured them, concluding that DAA appears to be a reliable alternative for revising a failed hip replacement while noting that higher-quality evidence is still needed.

Which revisions suit DAA best?

DAA-based revision tends to be most straightforward when addressing the acetabular (socket) side of the joint, or when exchanging a worn liner or femoral head, since the same anterior interval used in primary surgery can often be reopened. More complex femoral reconstruction can also be performed through DAA, but surgeons need detailed knowledge of the anatomy around the Hueter interval and access to instruments specifically designed for anterior revision work.

Is DAA right for every revision patient?

Not every case is suited to a DAA revision. The right approach depends on why the original replacement failed, the condition of the surrounding bone and soft tissue, and the surgeon’s experience with anterior revision techniques. Mr Alazzawi assesses each case individually, drawing on detailed imaging and a full surgical history, to determine whether DAA or an alternative approach will give the best outcome.

If you’re experiencing pain, instability, or other problems with a previous hip replacement, find out more about revision hip and knee surgery with Mr Alazzawi here or get in touch to discuss your options.