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Introducción: El ligamento patelofemoral medial se considera el principal estabilizador medial de la rótula. La reconstrucción está indicada en pacientes con luxación recidivante, cuando el tratamiento conservador ha fallado. Objetivo: Describir y evaluar una técnica de reconstrucción del ligamento patelofemoral medial con el tendón del aductor mayor en pacientes con esqueleto inmaduro. Métodos: Estudio anatómico y descriptivo de pacientes en los que se empleó el tendón del aductor mayor para reconstruir el ligamento patelofemoral medial. Después de la cirugía se evaluó reluxación, inestabilidad y satisfacción, con escala de Kujala. Resultados: Se disecaron 5 piezas de cadáveres frescos. El tendón del aductor mayor fue de 8 a 9 cm de longitud. Se realizaron ocho cirugías en siete pacientes entre 8-17 años, uno de ellos con síndrome de Down. El seguimiento mínimo fue 12 meses. No hubo reluxación, el paciente con síndrome de Down presentó subluxación rotuliana. La flexión y extensión de rodillas fue completa. Conclusiones: En pacientes con esqueleto inmaduro con placa de crecimiento del fémur distal presente y cercana al punto isométrico del ligamento, acarrea dificultades para la reconstrucción del ligamento patelofemoral medial. La técnica descrita por Avikainen permite reconstrucción no anatómica del ligamento sin realizar túneles femorales que pongan en riesgo la físis. Este trabajo describe la técnica con aductor mayor. De las ocho rodillas operadas, en solo una se presentó subluxación, en las otras se obtuvo buen resultado, sin luxación, y los pacientes quedaron satisfechos con el resultado(AU)

Introduction: The medial patellofemoral ligament is considered the main medial stabilizer of the patella. Reconstruction is indicated in patients with recurrent dislocation, when conservative treatment has failed. Objective: To describe and evaluate a reconstruction technique of the medial patellofemoral ligament with the adductor magnus tendon in patients with an immature skeleton. Methods: Anatomical and descriptive study of patients in which the adductor magnus tendon was used to reconstruct the medial patellofemoral ligament. After surgery, reluxation, instability and satisfaction were evaluated with Kujala scale. Results: Five pieces of fresh corpses were dissected. The adductor magnus tendon was 8 to 9 cm long. Eight surgeries were performed in seven patients between 8-17 years old, one of them with Down syndrome. The minimum followup period was 12 months. There was no relaxation. The patient with Down syndrome had patellar subluxation. The flexion and extension of the knees was complete. Conclusions: The reconstruction of the medial patellofemoral ligament causes difficulties in patients with immature skeleton, plate growth of the distal femur close to the isometric point of the ligament. The technique described by Avikainen allows non-anatomical reconstruction of the ligament without performing femoral tunnels that put the physis at risk. This paper describes the adductor magnus technique. Only one knee, out of the eight operated, had subluxation. The rest had good result, with no dislocation, and the patients were satisfied with the result(AU)

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The volar V-Y flap is used in transverse or dorsal oblique amputations in fingertip injuries; however, its use is contraindicated in patients with volar oblique amputations and cannot advance distally enough to cover the defect. The aim of this report is to describe a technique of double V-Y flap to cover fingertip defects in which a simple V-Y flap is not enough. This technique allows advancement between 30% and 50% farther than the original, simple V-Y flap. Report of cases a series of fingertip amputation covered with this technique. This technique was performed in 7 patients between 25 and 64 years old, with transverse, volar and dorsal oblique defects in the fingertip. The advancing of the flap was between 3 and 5 mm. There were no infections or necrosis of the flaps. In all patients there were acceptable aesthetic results with 2-point discrimination between 4 and 6 mm in the proximal flap and up to 10 mm in the distal flap with a minimum follow-up of 6 months. With this double V-Y flap, we have seen a good coverage even in volar oblique amputation. In addition, it is possible to advance up to 5 mm more with this second V-Y flap without compromising the vitality of the flap. It is a simple and reproducible technique that can be used on any finger, with good results, without flap necrosis.

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