The early radiological follow-up of a medial rotational design of total knee arthroplasty.

The objective of this study was to investigate the hypothesis that the increased constraint of a medial rotational knee promotes earlier loosening of the prosthesis. All patients with a Freeman-Samuelson 1000 knee arthroplasty (medial pivot design), (group 1), or a Freeman-Samuelson Modular knee arthroplasty, (group 2), with a minimum follow-up of 2 years (mean follow-up 4 years) were identified from our unit's arthroplasty database, and matched as closely as possible for age, length of follow-up and pre-operative diagnosis. Standardised anteroposterior and lateral radiographs were analysed for component migration and radiolucent lines as recommended by the Knee Society. There were 48 knees in each group. There were no failures in group 2. There was one failure requiring revision of the tibial component in group 1. There was no significant difference in overall radiolucent line scores between the two groups (p=0.66, at 5 years). Progressive radiolucent lines were detected in similar numbers of patients in both groups (FS1000 8/48, FSM 7/48, p=0.84). Our early radiological survey suggests that the increased constraint of the medial pivot knee prosthesis does not result in an increased incidence of radiographic loosening.

Utilizaçäo e causas de suspensäo de intervençöes cirúrgicas oculares em centro cirúrgico ambulatorial universitário / Use and causes of suspension of eye surgical interventions in an university ambulatory surgery center

A racionalizaçäo do uso de recursos é fundamental para um maior atendimento da populaçäo necessitada de cuidados em saúde e deve conter medidas que visem ao aproveitamento máximo do tempo disponível dos centros cirúrgicos. Objetivo. Analisar o desempenho do serviço de oftalmologia na realizaçäo e as causas de suspensäo de operaçöes oftalmológicas no CCA (Centro Cirúrgico Ambulatorial) do Hospital das Clínicas da universidade Estadual de Campinas Metodologia. Foram coletados dados referentes às operaçöes agendadas, realizadas e suspensas no CCA durante o ano de 1992. Resultados e Discussäo. Foram realizadas 4.938 (75,11 por cento) das 6.574 cirurgias agendadas. A Oftalmologia ocupa 40 por cento da área cirúrgica e realizou 2.514 (51 por cento) das cirurgias e suspendeu 746 (23 por cento). As outras especialidades realizaram 2.423 (49 por cento) e suspenderam 891 (27 por cento). As principais causas de suspensäo de cirurgias oftalmológicas foram: condiçäo clínica desfavorável, 346 casos (46,38 por cento), falta de comparecimento do paciente com 244 casos (32,71 por cento), e problemas adminsitrativos com 63 casos (8,44 por cento). O melhor controle e planejamento das cirurgias agendadas deve melhorar ainda mais a produtividade do CCA. As seguintes medidas foram colocadas em execuçäo para melhorar a eficiência do CCA: reuniäo com grupo de pacientes no pré-operatório, presença de clínico na admissäo dos pacientes, implantaçäo de um sistema de controle periódico do número de cirurgias e causas de suspensäao e, também, de material necessário para as cirurgias. É de fundamental importância para o aumento de produtividade que haja controle periódico da capacidade cirúrgica, do agendamento e do número de cirurgias realizadas

[Use and causes of discontinuation of eye surgical interventions at a university ambulatory surgery center]. / Utilização e causas de suspensão de intervenções cirúrgicas oculares em centro cirúrgico ambulatorial universitário.

OBJECTIVE: To study the efficiency of an ambulatory surgery center located at a university public hospital we studied the number of surgical interventions performed and suspensions and their causes. METHODS: We collected data on the number of surgical interventions performed, suspension and causes of suspension from January to December of 1992 of the ambulatory surgery center of the Clinical Hospital of University of Campinas, UNICAMP, in São Paulo. A comparison of performance of the Ophthalmology Department and the other medical specialties were made. RESULTS: Of the 6,574 surgical interventions booked 4,938 (75.11%) were performed and 1,636 (24.88%) suspended. Of the 4,938 surgical interventions 2,514 (51%) were performed by the Ophthalmology Department and 2,423 (49%) by other 11 medical specialties. The main causes of suspension of eye operations were unfavorable clinical condition (46.38%), absence of the patient (32.71%) and administrative problems (8.44%). CONCLUSION AND SUGGESTIONS: The Ophthalmology Department has 40% of the space available at the facility and did 51% of the interventions. A better control and planning of the surgical operations may increase the number of interventions and performance of the ambulatory surgery center. It is important for the optimization of the available resources to introduce a periodic control of surgical interventions done, suspension and their causes.