title: Is the Dresden technique a mechanical design of choice suitable for the repair of middle third Achilles tendon ruptures? A biomechanical study.
abstract: OBJECTIVE
  To compare the mechanical failure of the Dresden technique for Achilles tendon repair with the double modified Kessler technique controlled repair technique. The maximum resistance of the two repair techniques are also compared.
  
  
  METHODS
  A total of 30 Achilles tendon ruptures in bovine specimens were repaired with an Ethibond(®) suture to 4.5cm from the calcaneal insertion. Each rupture was randomly distributed into one of two surgical groups. After repair, each specimen was subjected to a maximum traction test. The mechanical failure (tendon, suture, or knot) rates (proportions) were compared using the exact Fisher test (α=.05), and the maximum resistances using the Student t test (α=.05).
  
  
  RESULTS
  There was a difference in the proportions of mechanical failures, with the most frequent being a tendon tear in the Dresden technique, and a rupture of the suture in the Kessler technique.
  
  
  CONCLUSIONS
  The repair using the Dresden technique performed in the open mode, compared to the Kessler technique, has a more suitable mechanical design for the repair of middle third Achilles tendon ruptures on developing a higher tensile resistance in 58.7%. However, its most common mechanical failure was a tendon tear, which due to inappropriate loads could lead to lengthening of the Achilles tendon.
authors.affiliation: Carrera de Kinesiología, UDA cs. de Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Programa de Magíster en Ciencias de la Ingeniería, mención Ingeniería Biomédica, Universidad de Valparaíso, Santiago, Chile. Electronic address: delafuentte@gmail.com.
authors.forename: C
authors.initials: C
authors.lastname: de la Fuente
authors.affiliation: Programa de Quiropraxia, Facultad de Ciencias de la Salud, Universidad Central, Santiago, Chile; Facultad de Ciencias de la Salud, Universidad Iberoamericana de Ciencias y Tecnología, Santiago, Chile.
authors.forename: G
authors.initials: G
authors.lastname: Carreño-Zillmann
authors.affiliation: Servicio de Traumatología, Clínica Santa Maria, Santiago, Chile; Escuela de Medicina, Universidad de Chile, Santiago, Chile.
authors.forename: H
authors.initials: H
authors.lastname: Marambio
authors.affiliation: Servicio de Traumatología, Clínica Santa Maria, Santiago, Chile; Servicio de Tobillo y Pie, Instituto Traumatológico «Teodoro Gebauer Weisser», Santiago, Chile; Escuela de Medicina, Universidad de Chile, Santiago, Chile.
authors.forename: H
authors.initials: H
authors.lastname: Henríquez
mesh_terms: D000125:Achilles Tendon / Q000293:injuries* / Q000601:surgery; D000818:Animals; D001696:Biomechanical Phenomena; D002417:Cattle; D019637:Orthopedic Procedures / Q000295:instrumentation / Q000379:methods*; D011897:Random Allocation; D012421:Rupture / Q000601:surgery*; D013537:Sutures; D013708:Tendon Injuries / Q000601:surgery*; D013718:Tensile Strength; D016896:Treatment Outcome
keywords: Achilles tendon tear; Diseño mecánico; Dresden; Mechanical design; Rotura del tendón de Aquiles