This research combined data from 25 previous studies to understand what happens when patients need a hip replacement after their initial surgery to fix a broken hip fails. The studies included information on 1,468 hip surgeries. The patients had all undergone a procedure called conversion hip arthroplasty, which is a salvage operation after the first repair didn't work.
The review found that, on average, about 17 out of every 100 patients experienced a complication. The most frequent problem was a fracture around the new hip implant, occurring in about 9% of cases. Other complications included dislocation (5%), infection (3%), and loosening of the implant (3%). On a positive note, patients' hip function, measured by a standard score, improved to a good level on average after the surgery.
It's important to know this is a meta-analysis, meaning it pools results from many different studies that were done in the past. The studies varied in how they were conducted, and the review did not compare this surgery to other possible treatments. The results give doctors a broad picture of potential risks and functional improvements, but they cannot tell any single patient exactly what to expect from this complex procedure.