114 fractures about the knee joint treated in our clinic during the years 1961-1970 were analysed.
Of these fractures, twenty were distal femoral fractures (nine treated by operation), forty-four were proximal tibial fractures (twelve treated by operation), and fifty were patellar fractures (twenty-two treated by operation).
As for the range of knee mortion, generally the cases treated conservatively were better than the surgical.
Only the fourteen patients of fifty who were sustained of the patellar fractures were traceable.
Two years was regarded as the shortest time after injury, ten years was the longest follow up; the average was four years.
The followed patients had all normal function of the knee except two patients who were resected the patella, and no degenerative joint change was found.