Transtibial Amputation Outcomes Study (TAOS): Comparing Transtibial Amputation With and Without a Tibiofibular Synostosis (Ertl) Procedure.

Academic Article


  • The optimal technique for a transtibial amputation in a young, active, and healthy patient is controversial. Proponents of the Ertl procedure (in which the cut ends of the tibia and fibula are joined with a bone bridge synostosis) argue that the residual limb is more stable which confers better prosthetic fit and improved function especially among high-performing individuals. At the same time, the Ertl procedure is associated with longer operative and healing time and may be associated with a higher complication rate compared with the standard Burgess procedure. The TAOS is a prospective, multicenter randomized trial comparing 18-month outcomes after transtibial amputation using the Ertl versus Burgess approach among adults aged 18 to 60. The primary outcomes include surgical treatment for a complication and patient-reported function. Secondary outcomes include physical impairment, pain, and treatment cost.
  • Authors

    Published In


  • Adolescent, Adult, Amputation, Ankle Joint, Combined Modality Therapy, Female, Humans, Leg Injuries, Male, Middle Aged, Prospective Studies, Synostosis, Tibia, Treatment Outcome, United States, Young Adult
  • Digital Object Identifier (doi)

    Author List

  • Bosse MJ; Morshed S; Reider L; Ertl W; Toledano J; Firoozabadi R; Seymour RB; Carroll E; Scharfstein DO; Steverson B
  • Start Page

  • S63
  • End Page

  • S69
  • Volume

  • 31 Suppl 1