Background This randomized clinical trial was conducted to assess the role of platelet-rich plasma (PRP) gel as a treatment of clean non-healing diabetic foot ulcer (DFU) in comparison with regular dressing with saline as a control. Methods Patients with DFU were randomly assigned to one of two equal groups: group I received dressing with PRP gel and group II received regular saline dressing. The main outcomes of the study were percent reduction in the dimensions of the DFU, healing of DFU, and complications at 20 weeks of follow-up. Results Twenty-four patients were included to the study. The mean age of patients was 55.2 ± 6.4 years. Only three (25%) patients in group I achieved complete healing versus none of group II patients. In total, 8.3% of group I and 41.6% of group II patients did not show any response to treatment. The percent of reduction in the longitudinal and horizontal dimensions of the DFU was significantly greater in group I than group II (43.2% vs 4.1%) and (42.3% vs 8.2%), respectively. The time required to maximum healing was significantly shorter in group I than group II (6.3 ± 2.1 vs 10.4 ± 1.7 weeks, P \ 0.0001). Conclusion The use of PRP gel as a dressing for chronic DFU resulted in a more significant reduction in the size of the ulcer when compared to regular saline dressing. Also the time to reach the point of maximal possible healing with the least wound dimensions was significantly shorter when using PRP as a dressing protocol.Ahmed Elsaid and Mohammed El-Said contributed equally to the study and both are considered co-first Author.

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BACKGROUND: The Parks classification has been used for the classification of anal fistula for several years, but it does not allow for risk factors for failure after surgery. OBJECTIVE: This study aimed to describe a modification of the Parks classification of anal fistula and examine its predictive validity in the assessment of the outcome of anal fistula in terms of failure of healing and fecal incontinence. DESIGN: This is a retrospective review of a prospective database. SETTING: This study was conducted in the Colorectal Surgery Unit, Mansoura University Hospitals. PATIENTS: Adult patients with anal fistula who underwent surgery were included. INTERVENTIONS: Five risk factors for failure after fistula surgery were identified from the literature and were examined by multivariate analysis of our patients. Four risk factors proved to be significant independent predictors of failure: secondary extensions, horseshoe fistula, previous fistula surgery, and anterior anal fistula in women. We modified the Parks classification by dividing the transsphincteric type into high and low and by grouping supra- and extrasphincteric anal fistulas into 1 group. The first 3 stages were subdivided according to the absence or presence of predictors of failure. MAIN OUTCOME MEASURES: The primary outcome measured was the validity of the modified Parks classification with regard to the rates of failure and fecal incontinence after surgical treatment of each stage of anal fistula. RESULTS: A total of 665 patients with cryptoglandular anal fistula were included. Failure rates increased from 2.3% (95% CI, 0.9%–4.7%), to 17.4% (95% CI, 10.8%–25.9%), 19.5% (95% CI, 15%–24.6%), and 30.7% (95% CI, 9.1%–61.4%) across the 4 stages. The area under the receiver operating characteristic curve was 0.90 (95% CI, 0.85–0.94) indicating the strong discriminative ability of the final multivariable predictive model. The increase in failure and incontinence rates across the fistula stages was significant. LIMITATIONS: This is a retrospective, single-center study. CONCLUSION: Inclusion of predictors of poor outcome into the modified classification helped differentiate simple and complex fistulas within each stage and between the different stages, which can help in assessment and decision making for anal fistula. See Video Abstract at http://links.lww.com/DCR/B441. MODIFICACIÓN DE LA CLASIFICACIÓN DE PARKS DE LA FÍSTULA ANAL CRIPTOGLANDULAR ANTECEDENTES: La clasificación de Parks se ha utilizado para la clasificación de la fístula anal durante varios años, sin embargo, no tuvo en cuenta los factores de riesgo de fracaso después de la cirugía. OBJETIVO: Describir una modificación de la clasificación de Parks de fístula anal y examinar su validez predictiva en la evaluación de los resultados de la fístula anal en términos de fracaso de la cicatrización e incontinencia fecal. DISEÑO: Revisión retrospectiva de la base de datos prospectiva. AJUSTE: Unidad de Cirugía Colorrectal, Hospital Universitario de Mansoura. PACIENTES: Pacientes adultos con fístula anal intervenidos quirúgicamente. INTERVENCIONES: Se identificaron cinco factores de riesgo de fracaso después de la cirugía de fístula de la literatura y se examinaron mediante análisis multivariante de nuestros pacientes. Cuatro factores de riesgo demostraron ser importantes predictores independientes de fracaso: extensiones secundarias, fístula en herradura, cirugía de fístula previa y fístula anal anterior en mujeres. Modificamos la clasificación de Parks dividiendo el tipo transesfinteriano en alto y bajo y agrupando la fístula anal supraesfinteriana y extraesfinteriana en un grupo. Las tres primeras etapas se subdividieron según la ausencia o presencia de predictores de fracaso. PRINCIPALES MEDIDAS DE RESULTADO: Validez de la clasificación de Parks modificada con respecto a las tasas de fracaso e incontinencia fecal después del tratamiento quirúrgico de cada etapa de la fístula anal. RESULTADOS: Se incluyeron 665 pacientes con fístula anal criptoglandular. Las tasas de fracaso aumentaron del 2,3% (IC del 95%: 0,9-4,7%), al 17,4% (IC del 95%: 10,8 al 25,9%), 19,5% (IC del 95%: 15-24,6%) y 30,7% (95% IC: 9,1- 61,4%) en las cuatro etapas. El área bajo la curva característica operativa del receptor fue 0,90 (IC del 95%: 0,85-0,94), lo que indica una fuerte capacidad discriminativa del modelo predictivo multivariable final. El aumento en las tasas de fracaso e incontinencia en las etapas de la fístula fue significativo. LIMITACIONES: Estudio retrospectivo, unicéntrico. CONCLUSIÓN: La inclusión de predictores de mal resultado en la clasificación modificada ayudó a diferenciar las fístulas simples y complejas dentro de cada etapa y entre las diferentes etapas, lo que puede ayudar en la evaluación y toma de decisiones para la fístula anal. Consulte Video Resumen en http://links.lww.com/DCR/B441.