The most commonly performed prophylactic surgical intervention is core decompression, whereby one or more cores of necrotic femoral head bone is removed in order to stimulate repair.Core decompression is often supplemented with bone grafting
to enhance mechanical support and augment healing.
Despite aggressive management, most hips that undergo collapse ultimately require reconstruction (ie, replacement).
Total hip arthroplasty
is perhaps the most commonly performed and successful surgery for advanced AVN of the hip.
You must definitely go for total hip replacement
considering your severe symptoms however your surgeon is the best person to answer this question.