[Optical tension studies of lifting osteotomy of the tibial tuberosity]

Optical tension experiments for model statistics were conducted for more elucidation of lifting osteotomy of tibial tuberosity and mechanisms of its impact upon the femoropatellar joint. The following two qualitative conclusions were primarily drawn: Growing pre-displacement caused reduction in the maximum number of isochromates. Stepwise pre-displacement caused dislocation of the contact point. While full translation of the above results to natural conditions is considered impermissible, displacement of femoropatellar pressures is felt to be an important mechanism of action.