Rotura espontánea del tendón extensor largo del pulgar ­ transferencia tendínea con técnica anestésica WALANT / Spontaneous rupture of thumb extensor pollicis longus ­ tendon transfer under the WALANT anesthetics technique

La rotura espontanea del tendón extensor largo del pulgar (ELP), es una patología infrecuente existiendo casos reportados en la literatura donde no se logra encontrar factores predisponentes. El manejo quirúrgico suele realizarse utilizando una técnica de transposición tendínea del tendón del extensor propio del índice. En la actualidad, la técnica anestésica de WALANT "Wide Awake Local Anesthesia with No-Torniquet" ha sido de amplio desarrollo en la cirugía de la mano, sobre todo para la resolución quirúrgica de patología de tendones, con buenos y excelentes resultados. Se presenta un caso de un paciente con rotura espontánea del tendón ELP, que fue manejado con una transferencia tendínea utilizando la técnica anestésica WALANT.

The spontaneous rupture of thumb extensor pollicis longus (EPL) is a rare disease with just a few case reports known where no trigger factor has been found. The surgical management is done by the proper index extensor tendon transposition. Nowadays, the WALANT anesthetic technique ("Wide Awake Local Anesthesia with No-Torniquet") has had a broad development in hand surgery, especially in surgery for tendon injuries, with good and excellent results. A clinical case is shown with a patient who had a spontaneous EPL rupture which was managed with a tendon transfer under the WALANT anesthetics technique.

Research progress in biosynthesis of backbone-cyclized peptides using EPL and PTS / 军事医学

As internal protein elements , inteins are self-excised from their host protein and catalyze ligation of exteins with a peptide bond .They are widely found in all the three domains of the biological kingdom , and in viral proteins .Intein-mediated protein splicing is a posttranslational autocatalytic process that does not require auxiliary enzymes or cofactors . Protein splicing involves four intramolecular reactions and a small number of key catalytic residues in the intein and exteins . The development of expressed protein ligation ( EPL ) and protein trans-splicing ( PTS ) is assisted by inteins and protein splicing.This review introduces the biosynthesis of backbone-cyclized peptides libraries , and describes the applications of cyclic polypeptides and their prospective applications in the future .

Interposition of Extensor Pollicis Longus Tendon in Smith's Fracture in a Child: A Case Report

Entrapment of the extensor pollicis longus tendon is reported rarely on Smith's fractures in children. In our case, a 15 year old boy with Smith's fracture received treatment of closed reduction at another hospital. When he visited our hospital, a wide gap at the fracture site was detected on radiograph and the thumb movement was limited. We have doubt the entrapment of the soft tissue, especially the tendon. We decided on open reduction. In the operation field, entrapment of the extensor pollicis longus tendon at the gap of the fracture site was found through dorsal approach. In addition, fracture treatment with K-wire fixation after reduction of extensonr pollicis longus tendon reduction was done. Therefore, we report this case with a review of the literatures.