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Collateral ligament strains during knee joint laxity evaluation before and after TKA.

par Delport, Hendrik;Labey, Luc;De Corte, Ronny;Innocenti, Bernardo ;Vander Sloten, Jos;Bellemans, Johan
Référence Clinical biomechanics
Publication Publié, 2013-06

Article révisé par les pairs

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Résumé :

Passive knee stability is provided by the soft tissue envelope. There is consensus among orthopedic surgeons that good outcome in Total Knee Arthroplasty requires equal tension in the medial/lateral compartment of the knee joint, as well as equal tension in the flexion/extension gap. The purpose of this study was to quantify the ligament laxity in the normal non-arthritic knee before and after Posterior-Stabilized Total Knee Arthroplasty. We hypothesized that the Medial/Lateral Collateral Ligament shows minimal changes in length when measured directly by extensometers in the native human knee during varus/valgus laxity testing. We also hypothesized that due to differences in material properties and surface geometry, native laxity is difficult to reconstruct using a Posterior-Stabilized Total Knee.