5k on elliptical and dislocating patellas

I have dislocating patellas (knee cap shifts out of socket, has even happened while walking) that have kept me from running since I was nine years old. It sucks! I do, however, love my elliptical because it is friendly on my knees. I just completed a 5k (~3.1mi) in 45 mins. I also go roughly at 73 rmp. Anyone with similar stats/ have dislocating patellas.

I have dislocated patellas. I had surgery one knee last summer the other is still bad.