Higher blood loss and transfusion requirement in surface arthroplasty versus conventional total hip replacement

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Dario Regis
Andrea Sandri
Elena Sambugaro
Massimo Franchini
Eugenio Vecchini
Elena Samaila
Bruno Magnan


blood loss, Hb level, hip resurfacing, total hip arthroplasty, transfusion requirement


Background and aim of the work: Surface replacement arthroplasty (SRA) is an alternative to stemmed total hip arthroplasty (THA) providing a femoral bone preserving procedure. Because of the wider surgical dissection, an increased blood loss could be expected. This retrospective study evaluates the transfusion requirement in two homogeneous groups of patients who underwent primary hip replacement electively. Methods: Perioperative haematological data of 42 hip resurfacing procedures and 41 conventional cementless THAs were compared. The pre- and post-operative haemoglobin (Hb) levels and the amount of blood transfusions were registered. The median values were compared with use of the non-parametric Wilcoxon signedrank test. Results: In the SRA group, a significantly increased (p<0.02) preoperative Hb concentration (13.1 g/dL, range 10.9 to 15.6) was detected in comparison with the THA group (12.5 g/dL, range 10.4 to 15.2). In the resurfacing procedures a median of 900 mL (range 600 to 1500) were transfused vs. 600 (range 300 to 1500) in the conventional THAs, demonstrating a significantly higher transfusion requirement (p<0.04). Conclusions: Whereas hip resurfacing is a femoral bone preserving alternative to conventional THA with comparable clinical and radiographic outcomes, higher blood loss and transfusion requirement may occur.


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