Diseño y elaboración de una férula tipo tenodesis fabricada en termoplástico de alta resistencia policloruro de vinilo PVC para la promoción de agarre de pinza trípode en personas con secuelas de trauma raquimedular / Design and development of a kind tenodesis splint made in high resistance thermoplastic polyvinyl chloride PVC to promote tripod clamp grip in people with spinal cord trauma aftermath

El presente documento es una propuesta teórica, que tiene como finalidad presentar un protocolo de elaboración de una férula dinámica tipo tenodesis a partir de un material termoplástico de alta temperatura, de fácil consecución en el mercado llamado policloruro de vinilo; Este tipo de férula se clasifica dentro de las denominadas férulas dinámicas y su objetivo final es la promoción de agarre de pinza trípode en personas que por lesiones a nivel de C5-C6, presentan ausencia de movilidad en los dedos de la mano pero conservan movimientos de muñeca. Cuando el usuario extiende la muñeca, la férula activa una serie de mecanismos que producen flexión pasiva de articulaciones metacarpofalangicas de los dedos II y III y simultáneamente hay una abducción y una relativa oposición del pulgar; estos movimientos formarán una pinza que proveerá al usuario la posibilidad de realizar actividades básicas con sus manos.

This document is a methodological contribution, which is to present a protocol for developing a tenodesis type dynamic splint from a high temperature thermoplastic material, easy to achieve on the market called polyvinyl chloride, this type of splint is classified within the so-called dynamic splints and its purpose is to promote tripod pincer grip in people with injuries at C5-C6, present lack of mobility in the fingers but retain wrist movements. When the user extends the wrist, splint activates a series of mechanisms that produce passive flexion of metacarpophalangeal joints of fingers II and III and simultaneously there is a relative abduction and thumb opposition, these movements form a clamp that will provide the user the ability to perform basic activities with their hands.

Comparison among Op-site, polyvinyl chloride film and tulle gauze in the treatment of skin graft donor sitet.

A prospective analytic study was performed at the Division of Plastic and Reconstructive Surgery, Department of Surgery, King Chulalongkorn Memorial University Hospital and the Department of Surgery, Chiang Mai University Hospital to compare among Polyvinyl chloride film (PVC film), Op-site and tulle gauze in the treatment of skin graft donor site. From October 1998 to January 2000, 81 donor sites in the same number of patients were treated by three different methods; tulle gauze (26 patients), Op-site (27 patients) and PVC film (28 patients). Each wound was followed until it was completely healed and visual analogue scale was used for pain evaluation. Donor site dressed with PVC film had a healing time of 10.44 days which was not different from Op-site (10.54 days) but significantly faster (p<0.001) than tulle gauze (17.84 days). Pain as measured with visual analogue scale in the group of PVC film (1.48) was not different from Op-site (1.34) but significantly less than (p<0.001) tulle gauze (5.45). There was no difference in the rate of infection between each group. In conclusion, the authors found no difference between Op-site and PVC film in healing time and pain. Both of them were better than tulle gauze. The results demonstrate the usefulness of PVC film as a donor site dressing as it promises relatively rapid healing, less pain and is inexpensive.

Emprego da bolsa plástica de transferência de hemoderivados no tratamento da gastrosquise / Utilization of a hemoderivates plastic bag for the treatment of gastroschisis

Os autores apresentam a sua experiência com a utilizaçäo da bolsa plástica de PVC (cloreto de polivinila), usada na transferência de hemoderivados, como prótese na confecçäo do silo para o tratamento cirúrgico da gastrosquise, em quatro recém-nascidos. Essa bolsa plástica é estéril, impermeável aos microorganismos, transparente, flexível, resistente, lisa internamente e näo aderente às alças, de fácil aquisiçäo e de baixo custo; características que a tornam excelente alternativa como prótese para o tratamento cirúrgico estadiado das anomalias congênitas da parede abdominal, como gastrosquise e a onfalocele. Os autores ressaltam ainda a importância da equipe multidisciplinar no atendimento a recém-nascidos com gastrosquise, para que haja bom exito pós-operatório.