Intraosseous pressure correlates with postoperative blood loss following cementless total hip arthroplasty

Abstract

The relationship between perioperative blood loss and intraosseous pressure of the ilium during cementless total hip arthroplasty has not previously been clarified. The aim of the present study was to evaluate whether blood loss in cementless total hip arthroplasty correlates with intraosseous pressure of the ilium or systemic arterial pressure. The subjects were 26 patients (5 men and 21 women) undergoing primary cementless total hip arthroplasty. Intraoperative and postoperative blood loss, intraosseous pressure of the ilium, and systemic arterial pressure were measured prospectively. Mean age of the subjects was 68.3 years. Intraoperative blood loss correlated significantly with mean arterial pressure (r=0.522, p=0.0079), but not with intraosseous pressure, age, or body weight. Postoperative blood loss correlated significantly with intraosseous pressure (r=0.399, p=0.0427), but not with mean arterial pressure, age, or body weight. Intraosseous pressure did not correlate with mean arterial pressure. These results suggest that intraosseous pressure of the ilium is a predictor of postoperative bleeding in primary cementless total hip arthroplasty.