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Related Experiment Videos

Deep vein thrombosis after total knee replacement.

P Ruban1, S J Yeo, K H Seow

  • 1Department of Anaesthesia and Surgical Intensive Care, Singapore General Hospital, Singapore.

Annals of the Academy of Medicine, Singapore
|November 1, 2000
PubMed
Summary

Deep vein thrombosis (DVT) incidence after total knee replacement in Singapore is 14%, lower than Western rates. No significant risk factors were identified, suggesting prophylaxis may not be universally needed.

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Area of Science:

  • Orthopaedic Surgery
  • Vascular Medicine
  • Epidemiology

Background:

  • Deep vein thrombosis (DVT) prevalence post-total knee replacement (TKR) ranges from 46-84% in Western studies.
  • This study investigated DVT prevalence in Singaporean TKR patients.
  • The need for DVT prophylaxis in this population was assessed.

Purpose of the Study:

  • To determine the prevalence of deep vein thrombosis (DVT) in patients undergoing total knee replacement (TKR) in Singapore.
  • To evaluate potential risk factors associated with DVT development after TKR.
  • To assess the necessity of DVT prophylaxis in this demographic.

Main Methods:

  • 100 consecutive TKR patients at Singapore General Hospital were analyzed.
  • Risk factors including age, sex, weight, and surgical details were assessed.

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  • Postoperative duplex scans were performed on day 7; treatment was initiated only for proximal DVT.

    • Main Results:

    • The overall incidence of deep vein thrombosis (DVT) was 14%, with most cases occurring distally.
    • DVT was more frequent in bilateral TKR (22.2%) than unilateral TKR (13.2%).
    • Partial thrombosis was common (71.4%), predominantly in the ipsilateral leg, with no evidence of propagation.

    Conclusions:

    • No significant risk factors were identified that differentiated patients with or without DVT.
    • The study suggests a potentially lower need for routine DVT prophylaxis in Singaporean TKR patients compared to Western populations.