Bilateral Intra-Articular Dislocation Of Patella In An Elderly :- A Rare Presentation.

Intra-articular dislocation of the patella is a very rare injury. Two types of intra-articular dislocation have been described. A horizontal type where the patella has rotated on its horizontal axis with the articular surfaces either facing proximally or distally. In the second type, the patella rotates on its vertical axis and the articular surface either faces medially or laterally. The former one is the most rare variety of intrarticular dislocation of patella. We could not find any case of bilateral intra-articular dislocation of patella reported in English literature. We report a case of 60 year old male presenting to the O.P.D. with 5 yr history of pain and decreased range of movements of bilateral knees. X-ray of the knees revealed bilateral intra-articular dislocation of patella with patella facing proximally. The patient was electively taken up for open reduction and reinforcement of the patellar tendon was done. The patient performed well on early follow-up.