Hamid Reza Seyyed Hosseinzadeh, MD; Ali Akbar Esmaieliejah MD; Seyyed Reza Aghapoor, MD; Reza Zandi, MD; Mohmmad Reza Bigdeli, MD; Ali Aidenlo, MD; Jaafar Tavakolian, MD; Ali Akbar Esmaieliejah MD; Seyyed Morteza Kazemi, MD
Abstract
Background: Dislocation of total hip arthroplasty may happen for different reasons. Abnormal acetabular orientation is a common reason for such occurance. We would like to report the effect of acetabular inclination on incidence of dislocation.Methods: In a cross-sectional study all cases of total hip ...
Read More
Background: Dislocation of total hip arthroplasty may happen for different reasons. Abnormal acetabular orientation is a common reason for such occurance. We would like to report the effect of acetabular inclination on incidence of dislocation.Methods: In a cross-sectional study all cases of total hip arthroplasty performed in a 2-yaer interval in one educational hospital in Tehran, were followed and assessed for possible dislocation in a 18.1 months (3-25 months) of follow-up. The inclination angles of acetabular components were measured, and the relationship of dislocation with gender, age and this angle was evaluated.Results: 132 cases entered the study. 4 patients (3%) encountered dislocation and all 4 had inclination angles of over 50 degrees. Gerder did not seem to play an important role. Older age, however, was probably contributing to risk of dislocation.Conclusion: Inclination angle of over 50 degree in acetabular component position is one of the factors making it more likely for the hip arthroplasty to dislocate.
Faramarz Mosaffa, MD; Seyyed Morteza Kazemi, MD; Mohammad Kaffashi, MD; Alireza Eajazi, MD; Laleh Daftari Besheli, MD; Mohammad Reza Bigdeli, MD; Ramin Farhang Zanganeh, MD
Abstract
Background: Antifibrinolytic drugs are used to minimize the potential risks of bleeding and blood transfusion. Studies showed the effect of tranexamic acid on decreasing blood loss in cemented THA. We would like to report its effect on cementless hip arthroplasty.Methods: A prospective double blind randomized ...
Read More
Background: Antifibrinolytic drugs are used to minimize the potential risks of bleeding and blood transfusion. Studies showed the effect of tranexamic acid on decreasing blood loss in cemented THA. We would like to report its effect on cementless hip arthroplasty.Methods: A prospective double blind randomized controlled study was conducted on 64 candidates for cementless THA under epidural anesthesia between 2006 and 2008. The patients were randomly divided into study and control groups. 32 patients received tranexamic acid (15 mg/kg) and 32 received normal saline immediately before surgery.Results: The comparison of two groups showed less drop in 6 hour (p < /em>=0.035) and 24 hour (p < /em>=0.043) post-operative hemoglobin levels, less intra-operative bleeding (p < /em>=0.024), and less need for allogenic blood transfusion (p < /em>=0.017) in the tranexamic acid group. Although the mean of 6 and 24 hour hematocrit level was higher and hospital stay was shorter in the tranexamic acid group, but the differences were not significant.Conclusion: administration of tranexamic acid before cementless THA under epidural anesthesia can reduce intra-operative and post-operative bleeding as well as need for blood transfusion.
