Mahmood Karimi-Mobarake - Associate Professor, Department of Orthopedy, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
Ali Nemati - Resident, Department of Orthopedy, School of Medicine, Shahid Beheshti Medical University, Tehran, Iran
Ali Kheradmand - Psychiatrist, Kerman Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran
Ghodratollah Rajabyzadeh - Associate Professor, Department of Psychiatry, Kerman University of Medical Sciences, Kerman, Iran

Background: Osteonecrosis is common after taking Temgesic and Norgesic. This study intended to suggest the preferable surgical treatment in osteonecrosis patients who use these drugs. Methods: Twenty tree patients with hip osteonecrosis who were hospitalized in the Kerman hospitals after using Temgesic and Norgesic were followed for about ۱۴ months from ۲۰۰۸ to ۲۰۱۰ (from a minimum of ۲ months to a maximum of ۲ years). ۶۵% of patients underwent total hip arthroplasty (THA) and core decompression was performed for ۳۵% of them. Patients were compared based on functional scoring of hip before and after surgery. Findings: Duration of drug use was ۳۸ months on average and injection frequency of drug was averagely ۳ months. The average functional scoring of hip was ۹.۱ before operation while it was ۱۶ after surgery (P < ۰.۰۰۱). Recovery rate of patients in THA was very good and in core decompression was good.Conclusion: In treatment of osteonecrosis after taking Temgesic and Norgesic, the THA surgery in comparison with core decompression showed better results and caused significant clinical improvement.Keywords: Total hip arthroplasty, Core decompression, Avascular necrosis, Temgesic, Norgesic.