Abstract
The purpose of this retrospective cohort study was to investigate the cementing effects on intraoperative blood pressure and the clinical and radiographic outcomes in elderly patients with femoral-neck fracture undergoing bipolar hemiarthroplasty using a polished, tapered stem. This retrospective cohort study included 38 patients with acute displaced femoral-neck fractures (mean age, 76.2 years; mean follow-up, 21.4 months (68 % follow-up rate)). Intraoperative systolic blood pressure decreased significantly, both during cementing (109.1 mmHg) and after stem insertion (101.6 mmHg), compared with the level before rasping (122.2 mmHg; p = 0.0036 and p = 0.0001, respectively). Diastolic blood pressure decreased significantly after stem insertion (57.9 mmHg versus 67.3 mmHg before rasping; p = 0.003). Hypoxia did not occur. Nineteen patients were Donaldson’s grade 1, 16 were grade 2, and none were grade 3. Twenty-three patients (74 %) maintained their preoperative activity level; 15 (26 %) worsened after surgery. Stem subsidence significantly increased over time: 0.32 mm at 6 months, 0.53 mm at 1 year, 0.91 mm at 2 years, 1.08 mm at 3 years, and 1.13 mm at 4 years. Cemented bipolar hemiarthroplasty for displaced femoral-neck fracture in elderly patients leads to hypotension, unchanged arterial oxygen saturation, favorable clinical outcomes, and acceptable stem subsidence.
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