RESUMO
AIM: Mid-term result documentation of ceramic-on-ceramic cementless total hip replacement. METHOD: From November 1998 to December 2005, 356 patients were submitted to 419 total hip arthroplasties of the hip with a cementless, ceramic-ceramic Bicontact/Plasmacup type of prosthesis. Patients were controlled in a consecutive prospective study. RESULTS: The average age of the patient group is 47.9 years, with an average follow-up of 48 months. There was no case with release of osteolysis of the acetabular or femoral components. There was one ceramic head fracture in an obese patient. Articular wear was negligible and could not be measured radiographically. CONCLUSION: The ceramic-ceramic Bicontact hip joint replacement presents a low complication rate in young patients, with very low wear.
Assuntos
Cerâmica , Prótese de Quadril , Adolescente , Adulto , Idoso , Cimentação , Feminino , Cabeça do Fêmur/diagnóstico por imagem , Cabeça do Fêmur/lesões , Necrose da Cabeça do Fêmur/diagnóstico por imagem , Necrose da Cabeça do Fêmur/cirurgia , Seguimentos , Fraturas do Quadril/diagnóstico por imagem , Fraturas do Quadril/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Osteoartrite do Quadril/diagnóstico por imagem , Osteoartrite do Quadril/cirurgia , Complicações Pós-Operatórias/diagnóstico por imagem , Complicações Pós-Operatórias/cirurgia , Estudos Prospectivos , Desenho de Prótese , Falha de Prótese , Radiografia , ReoperaçãoRESUMO
Verificar a frequencia da ocorrencia de discrepancia de membros inferiores apos a artroplastia total de quadril, por meio de analise radiografica. Sao apresentados o conceito de discrepancia de membros inferiores, os metodos de avaliacao existentes para obtencao da discrepancia de membros inferiores e sua importancia clinica. Material e metodos: foram analisados examesde 120 pacientes portadores de osteoartrose primaria ou secundaria unilateral, sendo 72 do sexo masculino e 48 dp feminino, com idades variando entre a segunda e setima decada de vida. Os participantes dessa pesquisa foram pacientes operados pelo Grupo do Quadril, do departamento de Ortopedia e Traumatologia do Hospital Sao Paulo. Com radiografias simples em plano anteroposterior utilizando osoftware Corel Draw, versao 10, foram realizadas tres linhas para medida e pela diferenca entre essas linhas de medida foi obtida a diferenca entre os membros inferiores. O teste de hipotese foi verificado pela aplicacao de teste parametrico da diferenca das medias. A apresentacao estatistica inclui o calculo de medidas de tendencia central e de dispersao. Resultados? foi observado que entre os 120 pacientes submetidos a artroplastia total de quadril avaliados neste estudo, 100 apresentaram discrepancia de membros inferiores, sendo (35 por cento) alongamentos (discrepancias positivas) e (65 por cento) encurtamentos (discrepancias negativas). Essas diferencas foram maiores que 1 cm, seja negativos ou positivos, em (36 por cento) dos pacientes avaliados. Conclusao: houve discrepancias entre os membros inferiores apos artroplastia total de quadril, sendo maiores de 1 cm em 36 por cento dos pacientes
Assuntos
Desigualdade de Membros Inferiores , OsteoartriteRESUMO
BACKGROUND: The immunomodulatory effects of allogeneic blood transfusions have been attributed to the white cells (WBCs) present in the cellular blood components transfused to patients. STUDY DESIGN AND METHODS: The effect of the transfusion of allogeneic red cells (RBCs) or allogeneic prestorage WBC-reduced RBCs (WBC-reduced RBCs) on host immune responsiveness was evaluated by measuring the lymphocyte subsets and the in-vitro cytokine production in response to phytohemagglutinin stimulation of WBCs of orthopedic surgery patients. Forty-seven patients undergoing hip replacement surgery were randomly assigned to receive allogeneic RBCs (n = 17) or WBC-reduced RBCs (n = 14; 99.95% WBC removal). Sixteen patients were not transfused. Patient blood samples taken before surgery and on Days 1 and 4 after surgery were tested for complete blood count, lymphocyte subset analysis, and measurement of cytokine levels. RESULTS: After surgery, the lymphocyte count was significantly decreased in patients transfused with > or = 3 units of allogeneic RBCs (2.0 +/- 0.5 vs. 1.3 +/- 0.3 x 10(9)/L; p = 0.017), but not in patients transfused with > or = 3 units of WBC-reduced RBCs (2.0 +/- 0.9 vs. 1.7 +/- 0.8 x 10(9)/L). Compared with preoperative levels, on Day 4 after surgery, patients transfused with > or = 3 units of allogeneic RBCs also had a decrease in the number of natural killer cells (0.07 +/- 0.05 vs. 0.04 +/- 0.03 x 10(9)/L; p = 0.018). Postoperatively, interleukin-2 was decreased in one patient who received WBC-reduced RBCs compared with that in four patients transfused with allogeneic RBCs (p = 0.32), and eight untransfused patients (p = 0.01). On Day 4, about 70 percent of patients transfused with allogeneic RBCs showed a 20-percent decrease in the interferon gamma level. CONCLUSION: Taken together, these data support the hypothesis that transfusion of > or = 3 units of allogeneic RBCs is associated with early postoperative lymphopenia in otherwise healthy individuals undergoing surgery. These findings were not observed in those individuals transfused with RBCs that had undergone prestorage WBC reduction.