Briard Jl. How To Correct Extra Articular Deformity. Slide 1 6

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Briard Jl. How To Correct Extra Articular Deformity. Slide 1 6

  1. 1. How to correct extraarticular deformity without causing instabilty ? Jean-Louis BRIARD
  2. 2. <ul><li>Intraarticular space </li></ul><ul><li>Extraarticular space </li></ul><ul><li>apart from the &quot;collateral ligament frame&quot; </li></ul>&quot;bony&quot; component of the deformity a major aspect in TKR Need for definitions !
  3. 3. Consider shape of the bones + + (reference to the mechanical axis)
  4. 4. <ul><li>When performing a TKR: </li></ul><ul><li>well aligned in Neutral </li></ul><ul><li>horizontal or perpendicular joint line </li></ul><ul><li>ie normo prosthetic femur & tibia </li></ul><ul><li>stable & mobile </li></ul>Well aligned knees #1 Consider the orientation of the joint line
  5. 5. <ul><li>&quot;SIMPLE&quot; </li></ul><ul><li>Neutral alignment </li></ul><ul><li>Femur Valgum </li></ul><ul><li>Tibia Varum </li></ul><ul><li>ie well aligned </li></ul><ul><li>with an oblique joint line </li></ul>FEW PRINCIPLES
  6. 6. <ul><li>but you want an </li></ul><ul><li>horizontal joint line </li></ul><ul><li>in Extension: </li></ul><ul><li>resect more medial condyle </li></ul><ul><li>more lateral plateau </li></ul><ul><li>Change anatomical femur valgum in prosthetic normo femur </li></ul><ul><li>Anatomical tibia varum in prothetic normo tibia </li></ul>

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