Current femoral cementing techniques for total hip arthroplasty (THA) have improved over recent years. High pressurisation is achieved using a cement gun with a proximal seal and a cement restrictor, maximising the microinterlock at the bone cement interface. However, there are concerns regarding over pressurisation of the femoral canal resulting in an increased risk of cardiorespiratory collapse secondary to embolic phenomena. We report on three cases over a one year period of cement within a vein (cement venogram) on a post-operative radiograph following THA. We feel that the cement venogram is an important indicator of high pressurisation and that its incidence may be on the increase with improved cementing techniques.
We present the clinical and radiographic outcome of 49 Exeter bipolar hemiarthroplasties for femoral neck fractures in 49 patients with a median age of 71 years at the time of operation. Median length of follow-up was 7.1 years (5 to 13). There was one dislocation, and one peri-prosthetic fracture. There were no revisions for infection, acetabular erosion or stem loosening. Twenty-six patients had died by the time of final follow-up with an overall 5 year cumulative survival of 60.2%. Thirty day mortality was 36% in patients with an ASA score of 3. We present excellent clinical and radiological medium to long term results with no evidence of acetabular erosion. However, careful patient selection is necessary to avoid high early mortality rates.
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