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Multicenter Study
. 2008 Mar;90(2):123-6.
doi: 10.1308/003588408X261627.

D-Dimer in the diagnosis of deep vein thrombosis following total hip and knee replacement: a prospective study

A Rafee  1 , D Herlikar, R Gilbert, R C Stockwell, G J McLauchlan
Affiliations
Multicenter Study

D-Dimer in the diagnosis of deep vein thrombosis following total hip and knee replacement: a prospective study

A Rafee et al. Ann R Coll Surg Engl. 2008 Mar.

Abstract

Introduction: The merit of using D-dimer estimations in patients following total hip and knee replacement has been previously questioned. A survey of radiology protocols in 70 hospitals ascertained that the test continues to be mandatory in 51 prior to formal radiological investigation of suspected deep vein thrombosis (DVT) in this patient population.

Patients and methods: In this study, D-dimer levels were measured pre-operatively and during the first 7 days following primary total hip and knee replacement to estimate the range of normal values in these patients.

Results: All 78 patients were ultrasonographically shown to be clear of DVT. D-Dimer levels were significantly raised in all patients at all measurements during the first week. Levels after total knee replacement were higher than after total hip replacement. Comparison was made with an age-matched group who had a proven DVT. There was no difference in D-dimer levels between patients with or without a DVT.

Conclusions: The use of this test in this patient group is a waste of resource and merely delays appropriate radiological investigation and treatment.

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Figure 1
Mean D-dimer levels pre- and post-surgery.
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