Fridén T
University Department of Orthopedics in Lund, Sweden.
Acta Orthop Scand. 1987 Aug;58(4):429-30. doi: 10.3109/17453678709146374.
A 56-year-old woman with arthrosis of the knee sustained a fixed superior dislocation of the patella from a minor trauma. Closed reduction was performed. Only 3 other cases have been found reported in the literature.