[Biomechanical studies on the stabilization effect of cortico-spongiosa chips in imperfect osteosynthesis]

Stability and plate strain of internally fixed femoral shaft fractures at different sites were tested under bending and compression loads. Stability of osteosynthesis with compression plate was not acutely affected by stresses encountered when standing on one leg. When fractures with a bone defect were treated by plate fixation stability was improved significantly when lateral support was preserved or when a medial cortico-spongious bone chip was used.