ObjectiveIdentify the clinical and surgical complications associated with the use of a tourniquet in total knee arthroplasty in patients with or without calcification of the popliteal artery.MethodsThe study was performed retrospectively, analyzing 58 patients with calcification of the popliteal artery and 57 patients as a control group.ResultsThe case group patients were significantly older than patients in the control group; however, this had no impact on the clinical outcome in the analyzed period.There were no complications during surgery in the groups studied, as there were no statistically significant differences between the incidence of local or systemic intercurrences in the analyzed period.ConclusionThis study found low rates of complications in patients undergoing total knee arthroplasties with use of a tourniquet, with or without calcification of the popliteal artery.

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Total knee arthroplasty (TKA) represents an effective therapeutic option for the treatment of advanced cases of knee osteoarthritis. Although considered safe, monitoring in the intensive care unit (ICU) reduces the chance of early fatal complications, and for this reason, many specialized treatment centers refer their patients to the ICU in the immediate postoperative period. We prospectively evaluated 122 patients monitored in the ICU for 24 hours after TKA to assess the profile of patients who had complications and to determine incidence of post-surgical complications. The most common complications were hypotension (6 cases; 28.57%), delirium (3 cases; 14.29%), hypovolemia (2 cases; 9.52%), hypoxemia (2 cases; 9.52%) and anemia (2 cases; 9.52%) The factor that showed a statistically significant positive correlation with complications was age over 70 years (p=0.015). We concluded that here was an association between the patient's age and the presence of post-surgical complication, and it was identified that the most common postoperative complication in the first 24 hours in the ICU was hypotension. Factors such as sex, diabetes, SAH, obesity and smoking are still conflicting and need more investigation.

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