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La aplicación de criterios tumorales en el tratamiento quirúrgico secuencial de las osteítis crónicas y seudoartrosis sépticas en forma de resecciones segmentarias origina amplios defectos óseos. Una vez controlado el proceso séptico, en un entorno estable y vascularizado, se procede a la reconstrucción en dichas lesiones mediante transporte óseo basado en la osteogénesis a distracción. A pesar de los buenos resultados obtenidos, los periodos de fijación externa y de curación son muy largos, 2,4 meses por centímetro reconstruido. Estos prolongados tratamientos motivan que haya un elevado número de complicaciones. Los avances en ingeniería tisular y regeneración ósea contribuyen con nuevas técnicas y opciones terapéuticas. La estimulación de la formación de hueso nuevo en la zona de distracción o en el punto de atraque del fragmento transportado puede minimizar las complicaciones asociadas a la larga duración del procedimiento. La utilización de un osteoinductor como BMP-7 origina en la práctica un aumento de la formación ósea y el nuevo hueso puede tener incrementadas sus propiedades biomecánicas (AU)

The application of oncologic criteria in the sequential surgical treatment of chronic osteomyelitis foci and septic pseudarthrosis, through segmental resections, produces extensive bone defects. Once the septic process is under control, in a stable and well vascularized atmosphere, we perform reconstruction of intercalary defects through bone transportation based on distraction osteogenesis. Despite the good results, the healing index and the time on ex-fi x are very long, about 10 weeks per centimeter rebuilt. These prolonged treatments lead to a large number of complications. Advances in tissue engineering and bone regeneration have led to new techniques and therapeutic options. Stimulation of new bone formation in the distraction area or in the “docking-site” can minimize the complications associated with the length of time required by the procedure. The use of an osteoinducer, such as BMP-7, increases new bone formation and may enhance its biomechanical properties (AU)

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AIMS AND DEVELOPMENT: Spasticity is an important medical problem with a high rate of incidence both in childhood, mainly as a result of cerebral palsy, and in adults, which is frequently brought about by traumatic brain injuries, strokes and spinal cord injuries. Spasticity is part of upper motoneuron syndrome, which gives rise to important problems, such as limited joint movement, abnormal postures that can produce pain, impaired functional capacity, aesthetic or hygiene disorders, among others. It progresses naturally towards chronicity, accompanied by static phenomena due to alterations affecting the properties of soft tissues (elasticity, plasticity and viscosity). Numerous therapeutic options are available for the treatment of spasticity, including medication, physiotherapy, orthopaedic aid, surgery, and so forth. Moreover, treatment should be individualised and realistic, with goals that have been agreed between the patient or caregiver and the medical team. The aim of the following guide is to further our knowledge of this condition, its causes, epidemiology and progression, as well as to outline an approach that is both rational and global from the point of view of pharmacological, rehabilitation and surgical treatment. CONCLUSIONS: Spasticity is a complex problem that requires specialists (neurologist, rehabilitation doctor, occupational therapist, orthopaedic surgeon, general practitioner, etc.) to work as a team in order to achieve the goals set out when treatment is begun. Early treatment is important to avoid or reduce, as far as possible, the severe complications stemming from this condition.

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Objetivos y desarrollo. La espasticidad constituye un problema médico de incidencia y trascendencia elevada tanto en la infancia, como consecuencia principalmente de la parálisis cerebral, como en adultos, ocasionada frecuentemente por traumatismos craneoencefálicos, ictus y lesión medular. La espasticidad forma parte del síndrome de motoneurona superior que ocasiona problemas importantes, como son: limitación articular, posturas anómalas que pueden generar dolor, alteraciónde la capacidad funcional, alteraciones estéticas o de higiene, entre otras. Su evolución natural es hacia la cronicidad, acompañada de fenómenos estáticos por alteraciones de las propiedades de los tejidos blandos (elasticidad, plasticidad y viscosidad).Las opciones terapéuticas de la espasticidad son múltiples: fármacos, fisioterapia, ayudas ortopédicas, cirugía, etc.Además, el tratamiento debe ser individualizado y realista, con unos objetivos consensuados entre el paciente o cuidador y el equipo médico. El objetivo de la siguiente guía es profundizar en el conocimiento de esta patología, sus causas, epidemiologíay evolución, así como aportar una forma racional y global de abordaje desde el punto de vista del tratamiento farmacológico, rehabilitador y quirúrgico. Conclusión. La espasticidad es un problema complejo que requiere un trabajo en equipo(neurólogo, rehabilitador, terapeuta ocupacional, cirujano ortopeda, médico de familia, etc.) para conseguir los objetivos que se fijan al principio de su tratamiento. Es importante el tratamiento precoz para evitar o reducir, en la medida de lo posible, las graves complicaciones que conlleva

Aims and development. Spasticity is an important medical problem with a high rate of incidence both in childhood,mainly as a result of cerebral palsy, and in adults, which is frequently brought about by traumatic brain injuries, strokes and spinal cord injuries. Spasticity is part of upper motoneuron syndrome, which gives rise to important problems, such as limitedjoint movement, abnormal postures that can produce pain, impaired functional capacity, aesthetic or hygiene disorders, among others. It progresses naturally towards chronicity, accompanied by static phenomena due to alterations affecting the properties of soft tissues (elasticity, plasticity and viscosity). Numerous therapeutic options are available for the treatment ofspasticity, including medication, physiotherapy, orthopaedic aid, surgery, and so forth. Moreover, treatment should be individualised and realistic, with goals that have been agreed between the patient or caregiver and the medical team. The aimof the following guide is to further our knowledge of this condition, its causes, epidemiology and progression, as well as to outline an approach that is both rational and global from the point of view of pharmacological, rehabilitation and surgicaltreatment. Conclusions. Spasticity is a complex problem that requires specialists (neurologist, rehabilitation doctor, occupational therapist, orthopaedic surgeon, general practitioner, etc.) to work as a team in order to achieve the goals set outwhen treatment is begun. Early treatment is important to avoid or reduce, as far as possible, the severe complications stemming from this condition

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This investigation was devised to correlate development of the articular system of the embryo with variations of motility by introducing reserpine to chick embryos at a Hamburger-Hamilton stage 25-26. Administration of reserpine was followed by hypermotility or paralysis in a dose-dependent fashion. Size of joint cavities varies with motility of the limbs. Larger than normal cavities are due to excess movements, while lack of these impedes differentiation. These data are consistent with the primary role of motility in articular development.

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In the present study, the results obtained after embryonic movements were paralyzed are described. Paralysis was produced by succinylcholine administered to chicken embryos during Hamburger-Hamilton's stages 25-29. The study of microscopic sections across all the articulations emphasize the absence of articular cavity formation. The cavities were replaced by a non-differentiated mass of mesenchymatous tissue. Regression of articular cavities and para-articular structures was noted in already formed embryos. Contrary to the opinion sustained by some authors, modifications on the articular surfaces were not produced. All of these data, reveal the importance of embryonic movements in articulation formation and conservation.

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