Short-term Results Of Cementless Femoral Stem In Primary Joint Replacement In The Elderly

[Objective] To investigate the feasibility and safety of cementless femoral stem applied in the elderly patients.[Method] From August 2011 to October 2015,a retrospectively analysis was done in our department for primary femoral arthroplasty patients using cementless femoral stems.They are divided into two groups according to age,included fifty-nine patients(64 hips)in young group(<65 years old)and sixty-seven patients(68 hips)in old elderly group(?80 years old),follow-up of 2.5 years.The data of postoperative periprosthetic subsidence and the complications related to the femoral implants were compared between the two groups.The postoperative functional recovery was evaluated.[Results] No aseptic loosening of the femoral stem occurred in all patients.There was no statistical difference between the two groups of patients after operation(P>0.05).In the elderly group,there were 2 cases of mild and moderate thigh pain,and 1 case occurred on the young group.All 3 patients' pain above were significant relief within 1 year after surgery.At the end of the follow-up,the good rate of Harris score were all 100 percent.After surgery four days,one patient in the elderly group suffered a fracture around the prosthesis(VancouverB1 type).But there was no fracture in the operation,no significant nerve and vascular injury,no deep infection or dislocation of the prosthesis after surgery.There were 1 case of deep venous thrombosis in the young group and 5 cases in the elderly group,and no acute pulmonary embolism or death after corresponding treatment.[Conclusion] The early safety was reliable in the elderly patients adopted cementless femoral stem,and the clinical results were satisfied.But the long-lasting efficacy still requires multi-center,large sample size and long-term clinical follow-up.