The purpose of this study is to evaluate the effect of topical application of tranexamic acid with bipolar hip arthroplasty for femoral neck fractures. Patients received 1.0 g tranexamic acid applied into the joint at the time of surgical closure. Compared to the non-administered group, the group that received 1 g of tranexamic acid had significantly less postoperative hemoglobin, hematocrit and estimated blood loss. In conclusion, the use of topical application of tranexamic acid is expected to reduce blood loss and blood transfusion rate.

We use taper wedged stem when we treat femoral neck fracture, so we reserch primary stablity of this stem.

We can follow 32 patients over a year. Patients averaged age is 81.7 years old. All of our patients had bipolar hemiarthoplasty with cementless taper wedged stem with posterior lateral approach. We use Dorr classification, our parients are devided type A 9 hips, type B 17 hips, type C 6 hips. We divided four types of stem fit: mediolateral-fit 20 hips, flare-fit 7 hips, multiple point-fit 5 hips.

Average stem sinking is 0.42mm. Bone reactions are observed, reactive line 10 hips, spot welds 20 hips, stress shieldings 8 hips.

We conclude primary stability of our patients are well, but we need longer follow up.