Objective
Identify the etiology and incidence, as well to assess functional outcomes of patients, undergoing lower limb amputation after failure or complication of total knee arthroplasty. These patients were treated at the Center for Knee Surgery at the National Institute of Traumatology and Orthopedics (INTO), during the period of January 2001 to December 2010.
Methods
The patients were interviewed and their charts were retrospectively analyzed to evaluate their functional outcome.
Results
The incidence of amputation due to failure or complication of total knee arthroplasty was 0.41% in 2409 cases. Recurrent deep infection was the cause of amputation in 81% of cases, being
Staphylococcus aureus
and
Pseudomonas aeruginosa
the most frequent germs. Vascular complications and periprosthetic fracture associated to metaphyseal bone loss were also causes of amputation. In our study, 44% of amputees patients were using orthesis and 62.5% have had the ability to walk.
Conclusion
Incidence of 0.41%, being the main cause recurrent infection. The functional outcome is limited, and the fitting achieved in 44% of patients and only 62.5% are ambulatory.
Objetivos: Avaliar sinais radiográficos de diminuição do arco longitudinal medial do pé com base em exames realizados antes e depois da cirurgia de transferência do tibial posterior para tratar o deficit motor ocasionado pela lesão completa do nervo fibular. Métodos: Estudo descritivo e analítico com base em informações colhidas em prontuários. Foram inclusos os pacientes com no mínimo dois anos de cirurgia e avaliadas as radiografias antes e depois do procedimento. Nas radiografias em incidência anteroposterior do pé foram avaliados os ângulos talocalcâneo, talometatarsal e a congruência talonavicular. Na incidência de perfil verificou-se os ângulos talocalcâneo, Meary e pitch do calcâneo. Foram colhidos dados referentes ao perfil do paciente, mecanismo de trauma e tempo de seguimento. Resultados: Um paciente apresentou radiografia sugestiva de diminuição do arco plantar após a transferência do tibial posterior. A variação angular ocorrida nos pacientes ainda que dentro da normalidade não apresentou variação estatisticamente significante. Conclusão: Não houve redução do arco longitudinal do pé de forma estatisticamente significante nos pacientes estudados.
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