One-hundred-fourteen consecutive cases of venography after primary uncemented total hip replacement were performed in a randomized trial to identify the natural incidence of @entity1150 , the effectiveness of prophylactic regimens such as 1.2 grams of @entity117 daily and low-molecular-weight dextran for 3 days, and other relative factors for the development of @entity49 . In addition, intraoperative venography was conducted in 10 @entity1 to study the speed of the flow of contrast media in the femoral vein and the development of @entity1150 and the extent of the twisting of the femoral vein during hip joint manipulation. The incidence of @entity49 in the control, @entity117 , and dextran prophylaxis groups were 20%, 11.5%, and 5.2% respectively. The incidence in the @entity117 group was reduced, but this was statistically insignificant. The dextran group showed a marked decrease in incidence, and the difference with the control group was statistically significant. With regard to the development site of @entity49 , it was prevalent in iliofemoral, lower femoral, and major @entity291 vein in the control group, while the popliteal and major @entity291 vein were the major site of @entity715 development in the @entity117 and dextran groups. The risk factors affecting the incidence of the @entity49 are confirmed to be @entity28 and long-term administration of @entity230 . Hematologic analysis was meaningless in investigating the development of @entity49 . The reliable clinical sign and symptom suggestive of the development of @entity49 was the severe swelling on the entire portion of affected lower extremity. In the intraoperative venogram, no correlation was found between the venous blood flow speed and the development of @entity1211 . A remarkable change in the blood flow of the femoral vein was noticed when the hip joint was flexed an average of 40.4 degrees, adducted at 11.5 degrees, and internally rotated at 81.5 degrees. Especially, when the joint was internally rotated, severe kinking of the vein could be observed. Thus it seems desirable to reduce the duration of internal rotation of the hip joint as much as possible to prevent @entity49 .

XXXX after uncemented total hip replacement.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity28 :: ('MESH:D009765', 'Disease') :: ['obesity'] @entity117 :: ('MESH:D001241', 'Chemical') :: ['aspirin'] @entity49 :: ('MESH:D019851', 'Disease') :: ['venous thrombosis'] @entity1150 :: ('MESH:D020246', 'Disease') :: ['deep vein thrombosis'] @entity230 :: ('MESH:D013256', 'Chemical') :: ['steroids'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thrombosis'] @entity1211 :: ('MESH:D054556', 'Disease') :: ['venous thrombi'] @entity291 :: ('9913', 'Species') :: ['calf']
@entity1150 :: (MESH:D020246,Disease) :: ['Deep vein thrombosis']
