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One of the most common grafts used to repair anterior cruciate ligament (ACL) rupture is the hamstring tendon (HT) autograft. However, another proposed option to repair the ACL is the quadriceps tendon (QT) autograft. This study aimed to compare the pain and clinical results between patients with ACL injury treated with QT autograft and with HT autograft.The Ethics and Investigation Committee of our institution approved the study. The patients were randomized into two groups: one group was treated with QT autograft and the other group was treated with HT autograft. The patients were evaluated preoperatively and postoperatively using the Lysholm-Tegner score, International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, and visual analog scale (VAS), at 2 weeks and 1, 3, 6, and 12 months.A total of 28 patients with a primary ACL injury were included in the study. No significant differences in VAS pain, Lysholm knee and Tegner activity scale scores, and IKDC score between the HT and QT groups were observed at any time point. All patients had favorable outcomes and significantly improved evaluation scores.The patients treated with QT autograft had clinical results and post-operative pain similar to those of patients treated with HT autograft for ACL reconstruction.Uno de los injertos más comúnmente usados para la reparación de una ruptura de ligamento cruzado anterior (LCA) es el autoinjerto de los tendones isquiotibiales. Sin embargo, otra opción propuesta para la reparación del LCA es el autoinjerto del tendón de cuadríceps. El objetivo de este estudio fue comparar el dolor y resultados clínicos en pacientes con lesión del LCA tratados con autoinjerto de cuadríceps y con autoinjerto de isquiotibiales.El Comité de Ética e Investigación de nuestra institución aprobó el estudio. Los pacientes fueron aleatorizados en dos grupos: un grupo fue tratado con autoinjerto del cuadríceps y el otro grupo con autoinjerto de isquiotibiales. Los pacientes fueron evaluados preoperatoriamente y postoperatoriamente usando la escala de Lysholm-Tegner, la International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, y la Escala Visual Análoga (EVA), a las dos semanas, a 1, 3, 6 y 12 meses.Un total de 28 pacientes con lesión primaria de LCA fueron incluidos en el estudio. No hubo diferencias significativas en EVA, escala de Lysholm-Tengner y en IKDC entre los grupos de isquiotibiales y cuadríceps durante su evaluación. Todos los pacientes tuvieron evoluciones favorables y mejoraron de forma significativa sus escalas.Los pacientes tratados con autoinjerto de tendón de cuadríceps tuvieron resultados clínicos y dolor postoperatorio similar a aquellos pacientes traídos con autoinjerto de isquiotibiales en la reconstrucción de LCA.

Background One of the most common grafts used to repair anterior cruciate ligament (ACL) rupture is the hamstring tendon (HT) autograft. However, another proposed option to repair the ACL is the quadriceps tendon (QT) autograft. This study aimed to compare the pain and clinical results between patients with ACL injury treated with QT autograft and with HT autograft. Materials and methods The Ethics and Investigation Committee of our institution approved the study. The patients were randomized into two groups: one group was treated with QT autograft and the other group was treated with HT autograft. The patients were evaluated preoperatively and postoperatively using the Lysholm-Tegner score, International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, and visual analog scale (VAS), at 2 weeks and 1, 3, 6, and 12 months. Results A total of 28 patients with a primary ACL injury were included in the study. No significant differences in VAS pain, Lysholm knee and Tegner activity scale scores, and IKDC score between the HT and QT groups were observed at any time point. All patients had favorable outcomes and significantly improved evaluation scores. Conclusion The patients treated with QT autograft had clinical results and post-operative pain similar to those of patients treated with HT autograft for ACL reconstruction.

ResumenLos cambios biológicos degenerativos que frecuentemente generan lesiones en el cartílago articular de rodilla se asocian principalmente con defectos en la alineación de la articulación, y con cambios de tipo metabólico relacionados con la edad como ocurre en la osteoartrosis. Además, la capacidad de autorregeneración del cartílago se ve bastante limitada debido a la falta de vascularización del tejido. Hasta la fecha no se cuenta con un tratamiento ideal que logre estimular la regeneración del cartílago, por lo que es necesario buscar alternativas terapéuticas para el tratamiento de este tipo de padecimientos.En años recientes se ha incrementado el número de publicaciones que intentan mostrar los beneficios terapéuticos y regenerativos al utilizar plasma rico en plaquetas como tratamiento en osteoartrosis de rodilla. A pesar de los resultados alentadores que se han observado, son todavía pocos los estudios controlados aleatorizados, con evidencia clínica contundente, quedando por esclarecer puntos como la formulación óptima o el mecanismo de acción del plasma rico en plaquetas. Hasta este punto, no todos los pacientes pueden tener un beneficio de esta terapia, basándonos en los resultados de los estudios clínicos, en donde es importante tener en cuenta aspectos como la edad y el grado de desgaste del cartílago.El objetivo del presente trabajo es hacer una revisión de la literatura científica reciente, del tratamiento de la osteoartrosis de rodilla con plasma rico en plaquetas y de las bases biológicas de esta terapia, así como mostrar una opinión actual acerca de este tema.AbstractThe biological changes that commonly cause degenerative articular cartilage injuries in the knee are primarily associated to misalignment of the joint and metabolic changes related to age, as occurs in osteoarthritis. Furthermore, the capacity for cartilage self-regeneration is quite limited due to the lack of vascularity of the tissue. To date there is no ideal treatment capable to stimulate cartilage regeneration; thus there is a need to seek alternative therapies for the treatment of such conditions.The number of publications demonstrating the therapeutic and regenerative benefits of using platelet-rich plasma as a treatment for knee osteoarthritis has been increasing in recent years. In spite of encouraging results, there are still only a few randomised control studies with strong clinical evidence, lacking clarity on points such as the optimum formulation or the mechanism of action of platelet-rich plasma. Up to this point and based on the results of clinical studies, not all patients can benefit from this therapy. It is important to consider aspects such as the age and grade of cartilage degeneration.The aim of the present paper is to review the recent scientific literature on the treatment of knee osteoarthritis with platelet-rich plasma, and the biological bases of this therapy, as well as presenting the current opinion on this subject.