Zertifizierung und Seminare

About the Necessity of a Dorsal Stop in KAFOs for Patients with Paralyses and Weak Plantar Flexors

  • Authors: Daniel Sabbagh1, Jörg Fior2, Ralf Gentz2
  • Institutions: 1FIOR & GENTZ GmbH – Scientific Editing, 2FIOR & GENTZ GmbH – Management
  • Form of Contribution: poster
  • Congress: ISPO 15th World Congress
  • Location: Lyon, France
  • Date: 22–25 June 2015
  • Expert Association: International Society of Prosthetics and Orthotics (ISPO)

Summary: Plantar flexors that are too weak or prolonged are responsible for the forefoot lever remaining inactive. An active forefoot lever generates a stable balance. It ensures the required safety when standing and causes the heel to lift from the ground at the right moment when walking. Thus, it is crucial for a balanced step length. If the plantar flexors are inactive, the forefoot lever is activated by a dorsiflexion stop. Therefore, AFOs and KAFOs should always be produced with ankle joints that have an adjustable dorsiflexion stop. The constructive difference lies between a static and a dynamic dorsiflexion stop. The correct position of the dorsiflexion stop is checked on the workbench and on the patient by means of various tests.

Keywords: biomechanics, weak plantar flexors, pathological gait, orthoses, dorsiflexion stop

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