Freedom in Osteoarthritis of the Knee

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The first peak of the external knee abduction moment (KAM) is often used as a surrogate measure of the medial compartment loading and has been correlated with pain and progression of knee osteoarthritis (OA). As a result, reducing the KAM is often the target of conservative interventions. OA should be considered as a “Whole Person” disease, including ecological psychosocial aspects. Scientists have developed gait alteration strategies to reduce the KAM. They attempted to force into a new position any particular part without reference to the pattern of the whole. We propose an alternative approach: in the vicinity of a special configuration of the knee, some or all of the components of the knee become overloaded. This study has shown that when six lines $1′, $′2, $′3, $′4, $′5, $′6 are so situated that forces acting along them equilibrate when applied to one degree of freedom, 1 F knee, a certain determinant vanishes. We wish to define the six lines as the knee complex in involution by virtue of some constraint upon the knee.

Original languageEnglish
Article number839
JournalApplied Sciences (Switzerland)
Issue number2
StatePublished - 1 Jan 2022


  • Action screw five-system
  • Biomechanism
  • Knee complex in involution
  • Linear complex
  • Osteoarthritis of the knee
  • Sexiant
  • Tensegrity system of the knee
  • Theory of screws


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