Background: A collection of symptoms dominated by pain, loss of function, and bony collapse brought on by anoxemia and other arterial feeding deficiencies of the femoral head that last long enough to induce noticeable bone degradation, including necrosis are known as avascular necrosis. Objective: To assess the effectiveness of replacement bipolar hip arthroplasty for hip function restoration in advanced stages of AVN in low socioeconomic circumstances. Materials and Methods: This was a retrospective study was conducted in JIMCH, Bajitpur, Kishoreganj. Patients with Ficat-Arlet type III –IV, Idiopathic, both bilateral and unilateral avascular necrosis of femoral head patients were included in this study. Age <20 years and >35 years, infective conditions. Previous history of surgery to hip including arthroscopy, Progressive neuromuscular disorders, revision THR, dermatological conditions around hip were excluded in this study. They were followed up for a minimum period of 5 year and evaluated for surgical and functional outcome using X-rays and Harris hip score. The follow up schedule was at 1month, 6 months, 1-year and every yearly post-surgery. The pre and post-operative pain, deformity and functional outcomes were compared. Results: All of the patients were between the ages of 20 and 35. Young people frequently have femoral head AVN. There were 19 female patients and 31 male patients out of 50. The primary presenting symptom of necrosis, which affected all patients (100%), was pain. Excellent results were present only in 16% (8 patients) of the cases in 3 weeks. 64% percent (32 patients) excellent results after 36 weeks and 36(72.0%) after 52 weeks postoperatively. Conclusion: Bipolar hip arthroplasty for AVN hip has a low incidence of post-operative complications in long-term follow-up and high good and excellent functional outcome.