Publications by authors named "Raimo O Niskanen"

Background: Tranexamic acid has been found to reduce blood loss and the need for blood transfusions in knee arthroplasty. In hip arthroplasty, the benefit of tranexamic acid is not as clear.

Patients And Methods: In a randomized, double-blind study, 39 patients with primary cemented hip arthroplasty for osteoarthritis were divided into two groups; one receiving tranexamic acid and the other not receiving it.

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Radiographs are necessary at some early point after a hip and knee arthroplasty. The aim of this study was to assess the value of routine repetitive radiographic examinations and the value of a reading of the images by a radiologist. Data of 200 cemented hip and knee arthroplasties for osteoarthritis were reviewed.

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This randomized study compared the effectiveness of a femoral nerve block with other methods of pain control on the first postoperative day after total knee arthroplasty. The femoral block consisted of a single injection administered at patients' bedside during the surgeon's hospital rounds. Compared with control group patients, femoral block patients reported less pain on a visual analog scale and required one half the amount of oxycodone (P = .

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PURPOSE: There is controversy between the symptoms and signs of chondromalacia. Patellar chondromalacia has several clinical tests, whose reliability as a parameter of chondral damage is unclear. The purpose of this prospective study was to correlate the sensitivity, specificity, predictive values and accuracy of clinical patellar tests with the findings at arthroscopy.

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