previous section: 4/13 page: 3/5 next

4Reduction and fixation of the articular block

Definitive articular surface fixation

Definitive lag screws may then be inserted in the distal femoral articular block in several directions:

  1. Screws may be inserted along the periphery of the articular surface of the lateral femoral condyle going from lateral to medial to fix the intercondylar split.
  2. Screws may be inserted starting just proximal to the articular surface and aimed from anterior to posterior to fix the frontal plane fracture (Hoffa fracture)
  3. In severe fractures, a diagonally inserted screw may be placed.

These screws may be fully threaded 3.5 mm lag screws (shown with gliding hole), 6.5mm partially threaded lag screws, or 4.0/4.5 mm cannulated partially threaded lag screws.

Insertion of screws in this manner allows a „free zone“ of bone into which a laterally based plate system can be placed (dotted circle).