title: [Modification of the operative technics for the ventralisation of the tuberositas tibiae (Maquet-Bandi) (author's transl)].
abstract: There is given a modification of operative technics for ventralisation of the tuberosity of the tibia (Maquet-Bandi-Operation). Similar to a sand-glass two triangular cortical/spongious bone grafts are taken from the medial side of the tibia, just beside the tuberosity. Their size can be determined exactly. After having chiseled the proximal part of the tuberosity from both sides and lifted it up, the bone grafts are put under it, one from the medial, the other one from the lateral side by the way, that the top of the triangle is looking in distal, the base in proximal direction. The cortical surfaces of the grafts, showing to the medial and lateral side, make sure the stable keeping place, while their spongious surfaces, showing to the internal side, by direct contact to the spongious backside of the tuberosity and its spongious bed guarantee the quick osseous consolidation. A minimal osteosynthesis by drilling 2 Kirschner-wires in ventro-dorsal direction through the tuberosity, the cortical part of the bone grafts up to the opposite cortex of the tibia finishes the operation.
  
  
  CONCLUSIONS
  1. The bone graft can be taken directly at the field of operation. 2. The bone material is homogenous. 3. The cortical part of the grafts guarantee stable keeping place. 4. Their spongious parts make sure the quick osseous consolidation. 5. Minimal osteosynthesis is necessary.
mesh_terms: D006801:Humans; D007592:Joint Diseases / Q000601:surgery; D010329:Patella / Q000503:physiopathology; D012092:Replantation / Q000379:methods; D013977:Tibia / Q000601:surgery*
vernacular_title: Operationstechnische Modifikation für die Ventralverlagerung der Tuberositas tibiae (Maquet-Bandi).