Entrenador-Simulador Avanzado para el aprendizaje y entrenamiento de la Cirugía Artroscópica insightArthroVR® / InsightArthroVR®, Advanced Arthroscopic Training Simulator

Las técnicas de cirugía mínimamente invasiva son cada vez más frecuentes. Sin embargo, estas técnicas son procedimientos costosos, complejos y difíciles de dominar. Los actuales métodos de aprendizaje presentan limitaciones y son susceptibles de ser complementados por soluciones de alta tecnología como el presente simulador de realidad virtual. El entrenamiento mediante simuladores mejora la destreza de los cirujanos en el uso del instrumental artroscópico, reduciendo el tiempo de la intervención, aumentando la seguridad y confianza del cirujano, disminuyendo el posible daño al paciente y permitiendo obtener experiencia en una gran variedad de patologías (AU)

Minimal Invasive Surgery (MIS) techniques are becoming more and more frequent. However these techniques are complex and expensive procedures difficult to master. Current learning methods have a number of limitations that can be compensated for and complemented by our virtual reality simulator. Training with simulators considerably improves surgeons’ dexterities with the arthroscopic instruments, reduces surgery times, increases surgery confidence and procedures safety, reducing the morbidity of real interventions and allowing obtaining experience in a large variety of pathologies (AU)

Osteochondral allografts for osteochondritis dissecans and osteonecrosis of the femoral condyles.

Osteochondral allografts were used in 11 patients with osteochondritis dissecans and 4 with osteonecrosis of the femoral condyles. The lesions were mainly in the medial condyle in 13 cases, and in the weightbearing area in 10. The grafts had a mean size of 6 cm2; 8 were kept in hypothermia at 4 degrees C for less than 24 h and 7 were stored at -80 degrees C with cryoprotection. After an average follow up of 3.2 years, only 2 patients needed a further operation, one for nonunion and the other for a fracture of the graft. The others had improved clinically and showed radiological union of the graft with preservation of the joint space.

LD hip arthroplasty. Design concepts and first clinical trials of a new modular system.

The new LD modular hip arthroplasty is made of Ti6A14V. The acetabular component has a hemispheric expansive metallic ring and a polyethylene nucleus in the shape of a cone segment. Since June 1988, when the clinical trials began, 352 arthroplasties have been performed with 112 total hip arthroplasties among them. Only 60 noncemented total hip arthroplasties, with the longest follow-up evaluation reaching 24 months, were analyzed. Patients with revision operations were excluded. The results have been evaluated using the Merle D'Aubigne scoring scale. Good results were found in 86% of cases. Pain improved markedly at three months in the postoperative period. At six months, the Trendelenburg sign was negative in 76% and positive in 12%. The Duchenne sign was positive in 11%. Major complications included three dislocations, two acetabular component revisions caused by initial malposition, one external popliteal nerve palsy, one deep infection, and two periprosthetic fractures. No acetabular migrations have been found. There are six femoral sinkings of less than 1 cm. Heterotopic ossifications Grade II-III appear in 24% of cases. The results to date are evaluated clinically and radiologically. The acetabular design has proved efficient, and the femoral components show a low incidence of stress shielding.