Estudio de la terapia con plasma rico en factores de crecimiento en patología condral de rodilla
Bibliographic record
Abstract
espanolIntroduccion: El tratamiento de las lesiones degenerativas de rodilla continua siendo un reto terapeutico debido a su bajo potencial biologico de curacion. Se han propuesto numerosos tratamientos no invasivos para mejorar el dolor y la funcion articular. Dentro del abanico de posibilidades de tratamiento con infiltraciones intraarticulares, el plasma rico en plaquetas (PRP) es un procedimiento simple y autologo que puede reducir el dolor, mejorar la funcion y asi la calidad de vida de los pacientes. No obstante, la pauta de 3 infiltraciones fue dictada de forma empirica, la validez de la elaboracion del PRP con medios locales, los efectos de la concentracion plaquetaria del PRP, el factor pronostico de cada infiltracion, o la influencia de factores predictores de respuesta no han sido definidos. Objetivos: En esta tesis, tanto en casos de gonartrosis, como en casos de condromalacia rotuliana se plantea: 1) Evaluar la efectividad del PRP elaborado con medios locales (PRP-ML); 2) Evaluar la relacion entre la respuesta a cada infiltracion como factor pronostico de respuesta final; 3) Determinar la posible influencia de la concentracion plaquetaria del PRP-ML en la respuesta; 4) Evaluar la influencia del grado de afectacion condral, la edad, el sexo, el antecedente de cirugia artroscopica y el indice de masa corporal en la respuesta. Metodologia: Fueron incluidos 113 casos de gonartrosis y 34 casos de condromalacia rotuliana, que fueron tratados con 1 infiltracion semanal de PRP-ML en 3 semanas consecutivas. 1) La evaluacion clinica se realizo mediante la escala visual analogica (EVA), la escala WOMAC (Western Ontario McMaster Universities Osteoarthritis index), el cuestionario de calidad de vida SF-12, incluyendo ademas la escala Kujala en los casos de condromalacia. Dichas escalas fueron recogidas en situacion basal, tras cada infiltracion, a las 5 semanas, 6 y 12 meses de evolucion. 2) Se utilizaron los criterios de respuesta clinica de OARSI. 3) Se dividieron los casos en 2 grupos en funcion de si la concentracion plaquetaria del PRP-ML fue superior o inferior a 380x109 plaquetas/L. 4) Se evaluo el dano condral mediante las escalas de Kellgren-Lawrence y Outerbridge, en gonartrosis y condromalacia rotuliana respectivamente, dicotomizadas ambas variables en mayor o igual a III, o, menor de III, la edad y el IMC fueron dicotomizadas en base al valor de la mediana. Resultados: 1) Se obtuvo mejoria significativa tras la infiltracion de PRP-ML, mantenida hasta los 12 meses de evolucion, tanto en casos de gonartrosis como en casos de condromalacia; 2) Observamos relacion estadistica entre la existencia de respuesta a la 1a, 2a y 3a infiltracion y la existencia de respuesta a los 12 meses, siendo esta respuesta inicial predictor de respuesta final en torno al 80%. 3) Se objetivo que infiltraciones de PRP-ML con una concentracion plaquetaria superior a 380 x109 plaquetas/L, no asociaron mejoria mas amplia, tanto en los casos de gonartrosis como en los de condromalacia. 4) Factores como: la edad igual o superior a 60 y 47 anos en gonartrosis y condromalacia respectivamente, el IMC igual o superior a 28 y 25 en gonartrosis y condromalacia respectivamente, la afectacion condral moderada-severa (igual o superior a III), el sexo o la artroscopia previa, no se asociaron con peor respuesta al tratamiento. Conclusiones: La terapia con PRP-ML es efectiva en la reduccion del dolor y mejora de la funcion en pacientes con gonartrosis y condromalacia rotuliana, existiendo asociacion entre la respuesta inicial y la observada a los 12 meses. No observamos relacion entre la respuesta al tratamiento y la concentracion plaquetaria del PRP-ML, el grado de dano condral, la edad, el sexo, el antecedente de artroscopia o el IMC. Palabras clave: plasma rico en plaquetas, medios locales, gonartrosis, condromalacia rotuliana, factores predictores. EnglishABSTRACT Introduction: Treatment for degenerative knee lesions continues to be a therapeutic challenge due to their poor biological healing potential. Numerous non-invasive treatments have been proposed to improve pain and function. Within the range of possibilities for treatment with intra-articular injection, platelet-rich plasma (PRP) is a simple and autologous procedure that can reduce pain, improve function and thus patients' quality of life. Nevertheless, the guideline for 3 injections was dictated empirically; the validity of PRP homemade preparation, the effects of PRP platelet concentration, the prognostic factor of each injection, and the influence of predictive factors for response have not been defined. Objectives: For both gonarthrosis and chondromalacia patellae, this thesis aims to: 1) Evaluate the effectiveness of homemade PRP (HM-PRP); 2) Evaluate the relationship between the response to each injection as a prognostic factor of the final response; 3) Determine how the platelet concentration in HM-PRP influences response; 4) Evaluate how the degree of chondral damage, age, sex, arthroscopic surgery history and body mass index influence response. Methodology: 113 cases of gonarthrosis and 34 cases of chondromalacia patellae were included, being treated with 1 weekly injection of HM-PRP on 3 consecutive weeks. 1) Clinical assessment was carried out with the visual analogue scale (VAS), the WOMAC scale (Western Ontario McMaster Universities Osteoarthritis index), the SF-12 quality of life questionnaire, and the Kujala scale was included for the cases of chondromalacia. These scales were collected at baseline, after each injection, after 5 weeks, 6 months and 12 months of progress. 2) The OARSI clinical response criteria were used. 3) The cases were divided into 2 groups according to whether the HM-PRP platelet concentration was higher or lower than 380 x109 platelets/L. 4) Chondral damage was assessed with the Kellgren-Lawrence and Outerbridge scales, for gonarthrosis and chondromalacia patellae, respectively, with both variables dichotomized into higher than or equal to III, or lower than III, and age and BMI were dichotomized based on the median value. Results: 1) Significant improvement was obtained after infiltration with HM-PRP and was maintained up to 12 months after for gonarthrosis as well as for chondromalacia. 2) A statistical relationship was found between the existence of response after the 1st, 2nd and 3rd injection and the existence of response after 12 months, with the initial response being predictive of the final response in approximately 80% of the cases. 3) The observation was made that HM-PRP injections with a platelet concentration higher than 380 x109 platelets/L were not associated with greater improvement, in gonarthrosis as well as in chondromalacia. 4) Factors such as: age equal to or higher than 60 and 47 years for gonarthrosis and for chondromalacia, respectively; BMI equal to or higher than 28 and 25 for gonarthrosis and for chondromalacia, respectively; moderate-severe chondral damage (equal to or higher than III); sex and previous arthroscopy were not associated with worse response to treatment. Conclusions: Therapy with HM-PRP is effective in reducing pain and improving function in patients with gonarthrosis and chondromalacia patellae, and there is a relationship between the initial response and that observed after 12 months. No relationship was found between the response to treatment and the platelet concentration, degree of chondral damage, age, sex, arthroscopy history or BMI. Keywords: platelet-rich plasma, homemade, gonarthrosis, chondromalacia patellae, predictive factors
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".