Objective-To assess attitudes to the use of thromboprophylaxis among orthopaedic surgeons in the United Kingdom.Design and subjects-Single page postal questionnaire to all 926 active orthopaedic surgeons who are members of the British Orthopaedic Association.
The pattern of popliteal blood flow following electrical calf muscle stimulation and activation of the venous foot pump were studied using duplex ultrasound scanning in volunteers. The increase in velocity was of a similar magnitude for both methods, but the pattern was different, suggesting that the venous foot pump may not empty the soleal venous sinuses. Dynamic venography confirmed this hypothesis.
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