[Retropatellar facet replacement using the McKeever patellar prosthesis (author's transl)].

110 knees were evaluated after retropatellar facet replacement (McKeever). In 105 of these cases high tibial osteotomy has been additionally performed. Indication and operative technique are discussed in details. The evaluation of the pre- and postoperative status bases upon an observation period of 1--7 years and concerns the criteria of pain, movability of the joint and ability to walk. Due to the magnitudes of compressive forces in the patella joint during flexed-knee stance, the position of the patella is considered to be essential for the result of this surgical treatment.