RESUMO
Objective: To identify blood transfusion requirements and postoperative complications in patients undergoing total knee arthroplasty (TKA) with no tourniquet and intraoperative intravenous administration of tranexamic acid. Methods: This retrospective observational study analyzed 49 preopeative and postoperative medical records of patients undergoing TKA. A paired t-test compared changes in hemoglobin (HB) and packed cell volume (PCV), and an independent t-test with Welch correction compared HB and PCV changes between genders. A Spearman correlation test determined associations between age and days of postoperative hospitalization with HB and PCV changes. The significance level adopted was p < 0.05. Results: The patients' mean age was 71.9 ± 6.7 years; most subjects were women (73.5%). The right side (59.2%) was the most affected. Only one participant required a blood transfusion, while three subjects had complications during the postoperative follow-up. No patient had a thromboembolic event. The median length of postoperative hospital stay was 2 days (interquartile range [IQR] = 1.0). There were reductions in HB and PCV levels between the pre-operative and postoperative period, and female patients had a higher HB reduction. Conclusion: TKA with tranexamic acid and no tourniquet did not cause significant postoperative complications or require blood transfusions.
RESUMO
OBJECTIVES: To evaluate and compare bone tunnel positioning in anterior cruciate ligament (ACL) reconstruction surgery using the arthroscopic technique and the open technique consisting of arthrotomy. METHOD: A comparative retrospective study on 70 patients with ACL lesions was conducted. Thirty-five patients underwent ACL reconstruction by means of the open technique and 35 by means of the arthroscopic technique using an anteromedial portal. All the patients underwent ACL reconstruction using an autologous graft from the middle third of the patellar tendon, fixed using interference screws. The postoperative radiographs were reviewed and the positioning of the femoral tunnel was evaluated using the methods proposed by Harner et al. and Aglietti et al., while the tibial tunnel was assessed using the method proposed by Rauschning and Stäubli. RESULTS: Fifty-four of the patients were male and 16 were female. Their mean age at the time of the procedure was 34 years and 3 months, with a range from 17 to 58 years. The arthroscopic technique was shown to be more accurate than the open technique for positioning both the femoral and the tibial bone tunnels. CONCLUSIONS: Radiological analysis on the knees subjected to ACL reconstruction showed that the positioning of both the femoral and the tibial bone tunnels presented less variation when the surgery was performed arthroscopically.
RESUMO
OBJETIVO: Avaliar e comparar o posicionamento dos túneis ósseos na cirurgia de reconstrução do ligamento cruzado anterior (LCA) pela técnica artroscópica e pela técnica aberta através da artrotomia. MÉTODO: Foi realizado um estudo retrospectivo comparativo de 70 pacientes acometidos por lesão do LCA. Trinta e cinco pacientes foram submetidos à reconstrução do LCA por via aberta e 35 por via artroscópica utilizando a técnica via portal anteromedial. Todos os pacientes foram submetidos à reconstrução do LCA usando enxerto autólogo do terço central do tendão patelar fixado com parafusos de interferência. As radiografias pós-operatórias foram revisadas e o posicionamento do túnel femoral foi avaliado pelos métodos propostos por Harner e Aglietti, enquanto o túnel tibial foi avaliado pelo método proposto por Staubli e Rauschning. RESULTADOS: Foram observados 54 pacientes do sexo masculino e 16 do sexo feminino. A média de idade na ocasião do procedimento foi de 34 anos e três meses, variando de 17 a 58 anos. A técnica artroscópica mostrou-se mais precisa que a técnica aberta quanto ao posicionamento dos túneis ósseos, tanto femoral quanto tibial. CONCLUSÃO: Através da análise radiológica dos joelhos submetidos à reconstrução do LCA, observou-se que o posicionamento dos túneis ósseos, tanto femoral quanto tibial, apresenta menor variação quando a cirurgia é feita pela via artroscópica.
OBJECTIVES: To evaluate and compare bone tunnel positioning in anterior cruciate ligament (ACL) reconstruction surgery using the arthroscopic technique and the open technique consisting of arthrotomy. METHOD: A comparative retrospective study on 70 patients with ACL lesions was conducted. Thirty-five patients underwent ACL reconstruction by means of the open technique and 35 by means of the arthroscopic technique using an anteromedial portal. All the patients underwent ACL reconstruction using an autologous graft from the middle third of the patellar tendon, fixed using interference screws. The postoperative radiographs were reviewed and the positioning of the femoral tunnel was evaluated using the methods proposed by Harner and Aglietti, while the tibial tunnel was assessed using the method proposed by Rauschning and Staubli. RESULTS: Fifty-four of the patients were male and 16 were female. Their mean age at the time of the procedure was 34 years and 3 months, with a range from 17 to 58 years. The arthroscopic technique was shown to be more accurate than the open technique for positioning both the femoral and the tibial bone tunnels. CONCLUSIONS: Radiological analysis on the knees subjected to ACL reconstruction showed that the positioning of both the femoral and the tibial bone tunnels presented less variation when the surgery was performed arthroscopically.
