Objective : To evaluate the effect of heat and steam generating sheets on osteoarthritis of the knee. Methods : Subjects with osteoarthritis of the knee (n=41) were randomized into 2 groups : a heat and steam generating sheet group or a heat generating sheet group. Functional impairment [Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and Japan Orthopaedic Association score (JOA score)] in the index knee were measured at baseline and then again after 2 and 4 weeks of wear. Results : At both the 2 and 4 week patient evaluations, the heat and steam generating sheet group showed improved total WOMAC scores. Although the heat generating sheet groups' WOMAC scores were improved after 2 weeks, the difference between the 2 and 4 week evaluations was not statistically significant. As for individual WOMAC scores, patients in the heat and steam generating sheet group especially demonstrated a highly significant decrease in WOMAC stiffness score. In comparison, patients in the heat generating sheet group showed no improvement in WOMAC stiffness score. Gait ability improvement, as measured by JOA score, showed similar results for both groups. Conclusion : This study showed that using heat and steam generating sheets decreased pain and stiffness, and increased gait ability in patients with osteoarthritis of the knee.

A follow-up study of 98 patients undergoing abdominal aortic aneurysm (AAA) repair for 44 months, ranging 2 to 113 months, revealed no difference in 5-year actuarial survival between patients aged 75 or older and patients aged less than 75. The 5-year actuarial survival of ruptured and nonruptured AAA cases was 469% and 71.2%, respectively (p<0.01). Late deaths after the repair of ruptured AAA were all due to atherosclerotic diseases. During a follow-up period after AAA repair, 9 patients were diagnosed as having malignant diseases with a fatal outcome in 6. Careful attention to atherosclerotic and malignant diseases is indispensable for follow-up management after AAA repair.