Thanks Jamie, yes i had it fitted a couple of years ago and have done hundreds of miles with no problems. However i haven't had it looked at recently. Cleats are just due for replacement actually but i was planning to put them in the same place.
David - the distance shouldn't be the issue really as i am used to long rides, max before this was 70.
I am a regular cyclist and distance runner and last saturday (13TH) did an 87 mile sportive, cycling non stop for best part of 6 hours. I had no pain while riding but the next day suddenly had pain in my left knee, around the inside of the patella (i think). I rested for a day and then did some gym work including 10 mins on the exercise bike which was agony. I ran too but this was ok with only mild pain. I left it again and then the next day ran 8 miles with no probs. Thinking it was ok i got on the turbo a day or so later but struggled with pain. I haven't been back on the bike since but ran today and it felt 80% ok.
I have no idea what it is but wonder if anyone has experienced this after a sudden long ride. I normally ride max of about 50 miles so this was quite a jump in mileage. If anyone can give a name or suggest what i might be experiencing that would be helpful. Any advice gratefully recieved!
PS. It might be useful to note i have been visiting the physio for the last 2 months for a pelvis misalignment which has now been fixed. Not sure if this has adjusted my riding style.