عملكرد پروتز توتال هيپ بدون سيمان

Cementless total hip arthroplasty

Introduction: Cement less total hip arthroplasty is a new method for fixation of hip prosthesis in which biologic fixation. Is used and does not poses problems related to cement. The propose of this prospective study is to asses mid-term results of cement less total hip replacement for patients younger than 60 years, who have a high level of physical activity and for those whose cement fixation has a short survey. Material and Methods: The study consisted of 45 hips in 41 patients. They were 31 males and 10 females. The youngest patient was 29 years old and the oldest was 60,with a mean of 48 years. Causes of hip joint pathology were in 11.1% primary osteoartrits ,71.1%seeondary osteoartrits ,8.8% Reumathoid Arthrits,4.4% hip joint tubercolosis ,2.2% Ankylosing Spondylitis ,2.2% with history of hip joint infection at childhood. Physical examination and radiologic evaluation before and after surgery and then at 6 weeks, 3 months, 6 months, 12 months, and then anualy was performed and recorded. We used Hariss Hip Scoring System for clinical assessment. Results: Cementless total hip prosthesis was used for all patients. Full weight bearing begun 3 months after operation. Mean score of patients before the surgery and at the last examination were 47 and 90 respectivly. Ninty percent of patients were without pain and limp. Prevalance of thigh pain was 10% that responded to usual analgesics and provided a comfortable life. There was 17% femoral and 4.4% acetabular osteolysis. One case underwent revision surgery because of recurrent dislocations. We had no infection but 2 cases encountered proneal neropraxia, which completely improved at 6 weeks. There was no thromembolic event, priprosthetic fracture or loosening. Conclusion: Cementless total hip replacement is an interesting method for patients with high physical level and younger in that cement becomes loose very soon. It also has not the problems of cement extraction in the case of revision.Cementless total hip prosthesis is valuable with enough survey and low complications.