LUIS EDUARDO PASSARELLI TIRICO
Projetos de Pesquisa
Unidades Organizacionais
Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
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- Effect of postoperative use of nasal oxygen catheter supplementation in wound healing following total knee arthroplasty(2014) HELITO, Camilo Partezani; JUNQUEIRA, Jader Joel Machado; GOBBI, Ricardo Gomes; ANGELINI, Fabio Janson; REZENDE, Marcia Uchoa; TIRICO, Luis Eduardo Passarelli; DEMANGE, Marco Kawamura; ALBUQUERQUE, Roberto Freire da Mota e; PECORA, Jose Ricardo; CAMANHO, Gilberto LuisOBJECTIVES: Healing is an event that is fundamental to the success of total knee arthroplasty. The aims of the present study were to compare the rates of complications related to wound healing between two groups of volunteers submitted to total knee arthroplasty and to evaluate the effects of postoperative oxygen supplementation by means of a nasal catheter. METHOD: A total of 109 patients who underwent total knee arthroplasty were randomized into two groups, namely, groups that did and did not receive postoperative oxygen supplementation via a nasal catheter. The surgical wound was monitored every day during the hospital stay and on the 7th, 14th, 21st, 30th and 42nd postoperative days. Characteristics related to healing were observed, including hyperemia, dehiscence, necrosis, phlyctenules and deep and superficial infection. RESULTS: There were no cases of deep infection. Hyperemia was statistically correlated with the total number of complications in the groups, with oxygen demonstrated to be a protective factor against hyperemia. Approximately 30% of the patients who exhibited hyperemia had other complications, independent of oxygen supplementation. CONCLUSION: Oxygen supplementation following total knee arthroplasty was shown to be effective in diminishing hyperemia around the operative wound. The development of hyperemia was a precursor to other complications, irrespective of whether oxygen supplementation was used.
- Radiographic Landmarks for Locating the Femoral Origin and Tibial Insertion of the Knee Anterolateral Ligament(2014) HELITO, Camilo Partezani; DEMANGE, Marco Kawamura; BONADIO, Marcelo Batista; TIRICO, Luis Eduardo Passareli; GOBBI, Riccardo Gomes; PECORA, Jose Ricardo; CAMANHO, Gilberto LuisBackground: Recent anatomic studies have confirmed the presence of a true ligament structure, the anterolateral ligament (ALL), in the anterolateral region of the knee. This structure is involved in the rotatory instability of the knee and might explain why some isolated reconstructions of the anterior cruciate ligament result in a residual pivot shift. Therefore, when considering the least invasive method for reconstruction of this structure, it is important to identify the corresponding bony landmarks on radiographic images. Purpose: To establish radiographic femoral and tibial landmarks for the ALL in frontal and lateral views. Study Design: Descriptive laboratory study. Methods: Ten unpaired cadaver knees were dissected. The attachments of the ALL were isolated and its anatomic parameters were quantified. Its origin and insertion were marked with a 2-mm-diameter metallic sphere, and radiographs were taken from frontal and lateral views. The obtained images were analyzed and the ALL parameters established. Results: The origin of the ALL in the lateral view was found at a point an average SD of 47.5% 4.3% from the anterior edge of the femoral condyle and about 3.7 +/- 1.1 mm below the Blumensaat line. In the frontal view, the origin was about 15.8 +/- 1.9 mm from the distal condyle line. The ALL insertion was an average of 53.2% +/- 5.8% from the anterior edge of the lateral tibial plateau in the lateral view and 7.0 +/- 0.5 mm below the lateral tibial plateau in the frontal view. In anatomic dissections, the origin of the ALL was 1.9 +/- 1.4 mm anterior and 4.1 +/- 1.1 mm distal to the lateral collateral ligament, and the insertion was 4.4 +/- 0.8 mm below the lateral tibial plateau cartilage. Conclusion: The ALL origin on an absolute lateral radiograph of the knee is approximately 47% of the anterior-posterior size of the condyle and 3.7 mm caudal to the Blumensaat line. In a frontal radiograph, the ALL is 15.8 mm from the posterior bicondyle line. The ALL insertion is approximately 53.2% of the anterior-posterior size of the plateau in the lateral view and 7.0 mm below the articular line in the frontal view. Clinical Relevance: Knowledge of the anatomic landmarks of the ALL on radiography will permit minimally invasive surgical reconstruction with lower morbidity.
article 0 Citação(ões) na Scopus Letter to the Editor Concerning the Article: ""Total Knee Arthroplasty After Lower Extremity Amputation: A Review of 13 Cases""(2014) HELITO, Camilo Partezani; DEMANGE, Marco Kawamura; PECORA, Jose Ricardo; GOBBI, Ricardo Gomes; CAMANHO, Gilberto Luis; TIRICO, Luis Eduardo P.- Revision of total knee arthroplasty in a patient with contralateral transfemoral amputation: Case report(2014) HELITO, Camilo P.; GOBBI, Riccardo G.; DEMANGE, Marco K.; PECORA, Jose R.; CAMANHO, Gilberto L.; TIRICO, Luis Eduardo P.Background: Knee arthroplasty is an efficient solution for osteoarthrosis in amputees. However, because of overload on the implant, it is apparently more subject to failure than in the non-amputated population. The aim of this case report is to show a failure of primary total knee arthroplasty contralateral to transfemoral amputation that required revision involving a tissue bank because of severely compromised knee bone. Surgical strategies, rehabilitation, and postoperative care for the operated limb and the contralateral prosthesis were demonstrated. Case description and methods: A 60-year-old patient with early failure of total knee arthroplasty contralateral to transfemoral amputation underwent arthroplasty revision in which a graft from a tissue bank was used. After the revision, prosthesis length adjustment and exercise therapy were fundamental to the rehabilitation. Findings and outcomes: The patient progressed well after the revision of the arthroplasty, with increases on the Knee Society Score and 36-Item Short Form Health Survey scales. Conclusion: Knee arthroplasty in amputees should be planned differently to that of the general population. For the procedure to be successful, there should be greater attention to implant stability, equalization of leg length, and a postoperative regimen including muscle strengthening and range of motion exercises to achieve the required knee flexion.
- Epidemiology of septic arthritis of the knee at Hospital das Clinicas, Universidade de Sao Paulo(2014) HELITO, Camilo Partezani; NOFFS, Guilherme Guelfi; PECORA, Jose Ricardo; GOBBI, Riccardo Gomes; TIRICO, Luis Eduardo Passarelli; LIMA, Ana Lucia Munhoz; OLIVEIRA, Priscila Rosalba de; CAMANHO, Gilberto LuisBackground: Septic arthritis is an infrequent disease although very important due to the possibility of disastrous outcomes if treatment is not adequately established. Adequate information concerning the epidemiology of septic arthritis is still lacking due to the uncommon nature of the disease as well as the struggle to establish a correct case-definition. Objective: To epidemiologically characterize the population seen at Hospital das Clínicas, University of São Paulo with a diagnosis of septic arthritis between 2006 and 2011. Methods: Sixty-one patients diagnosed with septic arthritis of the knee between 2006 and 2011 were retrospectively evaluated. The patients' clinical and epidemiological characteristics, the microorganisms that caused the infection and the patients' treatment and evolution were analyzed. Results: Septic arthritis of the knee was more common among men, with distribution across a variety of age ranges. Most diagnoses were made through positive synovial fluid cultures. The most prevalent clinical comorbidities were systemic arterial hypertension and diabetes mellitus, and the most commonly reported joint disease was osteoarthritis. Staphylococcus aureus was the prevailing pathogen. Fever was present in 36% of the cases. All patients presented elevation in inflammatory tests. Gram staining was positive in only 50.8% of the synovial fluid samples analyzed. Six patients presented complications and unfavorable evolution of their condition. Conclusion: S. aureus is still the most common pathogen in acute knee infections in our environment. Gram staining, absence of fever and normal leukocyte count cannot be used to rule out septic arthritis.
- Reinforcement with fascia lata as an alternative in the repair of chronic quadriceps tendon injuries(2014) HELITO, Camilo Partezani; BONADIO, Marcelo Batista; ANGELINI, Fabio Janson; TIRICO, Luis Eduardo Passarelli; PECORA, Jose Ricardo; CANIANHO, Gilberto Luis; DEMANGE, Marco Kawaniura
- Loosening of the Patellar Component and Extra-articular and Transcutaneous Migration After TKA(2014) HELITO, Camilo Partezani; GOBBI, Riccardo Gomes; TIRICO, Luis Eduardo Passarelli; PECORA, Jose Ricardo; CAMANHO, Gilberto LuisReplacement of the patella during total knee arthroplasty (TKA) remains controversial. Despite some attempts to establish guidelines for this procedure, there is still no consensus in the literature. When the patella is replaced, the patient is subjected to certain complications, including loosening of the component. The loosened patellar component most commonly migrates to the intra-articular region of the knee. However, there have been a few reports of migration of the component to the extra-articular region, particularly when release of the lateral retinaculum and osteonecrosis of the patella are involved. The authors report a case of patellar component loosening and extra-articular and transcutaneous migration of the component 9 years after TKA. This report is unique because, during the primary procedure, no lateral release was performed and no patellar necrosis was evident on radiographs. The component was removed in the operating room and the wound cleaned and closed. Because of the probable slow migration of the component, there was no communication between the external environment and the joint at the time of surgery. There were no further complications after the wound healed. This case emphasizes the need for periodic radiographic follow-up after TKA.
- Severe metallosis following total knee arthroplasty: a case report and review of radiographic signs(2014) HELITO, Camilo Partezani; GUSMAO, Carlos Vinicius Buarque de; ANGELINI, Fabio Janson; TIRICO, Luis Eduardo Passarelli; PECORA, Jose RicardoMetallosis is an uncommon complication following total knee arthroplasty that leads to osteolysis and implant loosening due to chronic inflammatory reaction. Abrasion between the metallic surfaces of the implant releases metallic debris that interacts with the periprosthetic soft tissues and causes chronic synovitis. Here we present a case of a 65-year-old man who had undergone total knee arthroplasty 10 years ago and developed implant loosening associated with severe metallosis and varus instability. Radiographs show the three typical signs of metallosis: metal-line sign, bubble sign, and cloud sign. This patient was subjected to revision surgery consisting of debridement and primary implant replacement by a hinged endoprosthesis. Knowledge of the typical radiographic and clinical findings of metallosis is important to rapidly diagnose this complication and avoid progressive joint destruction.