[Partial replacement of the knee joint with patient-specific instruments and implants (ConforMIS iUni, iDuo)].

摘要: Knee arthroplasty is a successful standard procedure in orthopedic surgery; however, approximately 20 % of patients are dissatisfied with the clinical results as they suffer pain and can no longer achieve presurgery level activity. According to literature reasons inexact fitting prosthesis or too few anatomically formed implants resulting less physiological kinematics knee joint. Reducing number corresponding revisions an important goal considering increasing need for artificial joints. In this context, patient-specific obvious alternative conventional implants. For first time now matched individual bone not vice versa best possible situation geometry more structures (e.g. ligaments bone) preserved only those replaced which were actually destroyed by arthrosis. authors view, represents optimal pioneering addition Patient-specific instruments needed correct alignment be manufactured virtual 3D reconstruction printing based on computed tomography (CT) scans. The portfolio covers medial well lateral unicondylar implants, bicompartmental (femorotibial patellofemoral compartments) cruciate ligament-preserving ligament-substituting total replacements; it must explicitly emphasized that sparse long-term data available.