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Total knee arthroplasty(TKA) has been the final clinical treatment of knee osteoarthritis at the final stage, postoperative limb and prosthesis alignment restoration directly affect clinical effect. In recent years, computer-assisted surgery has been used in TKA and obtained satisfied results. There paper has investigated that the use of computer-assisted systems could improve soft tissue balance after TKA, improve accuracy of installation of prosthesis, recover limb alignment and decrease intro-blood loss, postoperative fat embolism. Although computer-assisted navigation is not mainstream, with the continuous improvement of technology and innovation, the computer-assisted surgery could exert a more important role in TKA, and considerably beneficial effect on improvement of postoperative clinical effects.
Subject(s)
Humans , Arthroplasty, Replacement, Knee , Knee Joint , Osteoarthritis, Knee , Postoperative Period , Surgery, Computer-AssistedABSTRACT
Objective To explore the effect of nutritional intervention on nutritional status,weight,physical strength and quality of life of patients with head and neck cancer treated by radiotherapy.Methods 77 patients with head and neck malignant tumors treated by radiotherapy were divided randomly into two groups,nutritional intervention group (NI) had 38 cases and control group (CG) had 39 cases.The status of nutrition,weight,physical strength and quality of life before radiotherapy,the end of radiotherapy and 3 months after radiotherapy in two groups were compared.Results The nutritional risks in two groups had no difference before radiotherapy.At the end of radiotherapy,the assessment score of the nutrition in NI was significantly lower than that in CG [(5.41±2.36) scores vs.(6.92±2.74) scores,t =4.935,P ＜ 0.05],and the average weight in NI was significantly higher than that in CG [(57.07±8.01) kg vs.(46.53±9.82) kg,t =2.670,P ＜ 0.05].At the end of radiotherapy and 3 months after radiotherapy,the physical strength in NI [(57.07± 8.01),(41.48±7.92) kg] were significantly higher than those in CG [(36.43±6.48),(37.94±8.03) kg] (t =2.670,P =0.021;t =2.361,P =0.037);the index of quality of life in NI [(51.37±6.56),(52.07±6.23) scores] were also significantly higher than those in CG [(46.93±6.98),(48.13±7.12) scores] (t =2.292,P =0.041;t =2.076,P =0.037).Conclusion Nutritional intervention can effectively maintain the nutritional status of head and neck cancer patients with radiotherapy,and improve continuously the physical strength and the quality of life.
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Introdução: Dermatologistas podem avaliar a qualidade da pele de um paciente através de suas rugas faciais. Existem diversos métodos descritos para quantifi car as microelevações e rugas da pele. Objetivo: O objetivo deste estudo é utilizar a tecnologia de processamento de imagem para avaliar a área das rugas e sua correlação com a avaliação do dermatologista. Material e Métodos: Cento e setenta e um voluntários selecionados aleatoriamente, com idades variando de 18 a 69 anos, de ambos os sexos, com pele tipos II-IV de Fitzpatrick e I-IV de Glogau, participaram deste estudo. Fotografi as digitais foram tiradas sob duas condições diferentes: com as rugas relaxadas (RR) ou contraídas (RC). Foram tiradas pelo menos seis fotografi as para determinar a reprodutibilidade de cada método. Seis dermatologistas avaliaram as fotografi as e marcaram as rugas dos pacientes com uma caneta digital. Determinou-se a intensidade das rugas por três diferentes métodos de processamento de imagens. A avaliação quantitativa da intensidade das pregas cutâneas e a consistência inter e intramétodo foram estabelecidas e comparadas à avaliação manual. Resultados: A variabilidade dos dermatologistas foi de 61,49%. A concordância intratestes variou de 4,4 a 31%. O método do gradiente obteve os melhores resultados e detectava as condições das rugas (p < 0,001), tendo apresentado também uma correlação positiva com a avaliação manual. Conclusões: As rugas periorbitais foram identifi cadas. Os dermatologistas demonstraram precisão interna, mas baixa exatidão. O processamento digital do operador de Sobel é um instrumento válido e confi ável para a avaliação quantitativa de rugas.
Introduction: Dermatologists get an idea of how old a patient is by looking face's wrinkles. Different methods exist to quantify skin microrelief and wrinkles. Objective: To use imaging process technology to assess the wrinkle area and its interrelation with dermatologist determination. Material and methods: One hundred seventy-one volunteers, randomly selected, aged 1869 years, both gender, Fitzpatrick skin type IIIV, with Glocau IIV were selected. Digital photography was obtained. Two different conditions, relaxed or contract wrinkle condition (CWC), and at least six repeated pictures for repeatability capacity of each method. Six participating dermatologists evaluated the pictures and ascertained patients' wrinkle using a digital pen. Wrinkle intensity was done by three different image processing methods. Quantitative assessment of facial skin folds intensity, and inter- plus intra-method consistency were determined and compared to manual evaluation. Results: Dermatologists variability was 61.49%. Intra-tests agreement varied from 4.4 to 31%. The gradient method had the best results and could detect the wrinkle conditions (p < 0.001). Also, this method had a positive correlation with the manual assessment. Conclusions: Periorbital wrinkles could be determined. Dermatologists had internal precision but low accuracy. Sobel Operator digital processing is a valid and reliable instrument for quantitative wrinkle assessment.
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Objective To investigate the mechanisms of right atrial tachycardia(AT) occurring after atriotomy of structural heart disease under the guidance of image integration system(CartoMerge system) and explore the efficacy of catheter ablation by using the aboved technique.Methods From January 2005 to December 2006,forty consecutive drug-refractory patients presenting with AT underwent complete electroanatomic mapping of spontaneously occurring and inducible right ATs.The ablation strategy was to avoid visible anatomic anomaly under the guidance of image integration system and to transect the isthmus,usually targeting the narrowest portion of the isthmus.Patients were followed up on an outpatient basis with clinical evaluation and 24-hour Holter recordings being performed at three months,six months,and afterwards on a yearly basis.Results Three main tachycardia mechanisms were identified: single-loop macroreentrant atrial tachycardia(MAT)(n=36),double-loop MAT(n=16),and focal AT(n=4).In most MATs,critical isthmus areas were identified most frequently the cavotricuspid isthmus(CTI)(n=35) and the surgical incision isthmus(n=36).Surgical incision causing obvious morphological anomalies including scar-like anomaly,pouch-like anomaly,and node-like anomaly could be visible by image integration technique in 12 patients,which had the electrophysiological characteristics of a surgical incision(a CDP or scar).A mean number of 19.5?10.1 radiofrequency(RF) applications were delivered to terminate the circuit.During a follow-up of 18?10 months the RF ablation was acutely successful in all patients.Eight patients(20%) had an early recurrence of MAT and needed an additional ablation procedure.Conclusion Image integration system not only allows reconstruction of AT mechanisms,but also represents an advance in the accurate localization and ablation of the arrhythmogenic substrate of postsurgical AT.Three-dimensional MR/CT images of RA can be successfully extracted and registered to anatomically guide catheter ablation in RA.The display of real and detailed anatomic information during the procedure enables tailored RF ablation to individual distorted anatomy related with surgical incision.