A couple of weeks ago, I decided to re-check the saddle fore and aft adjustment on my road bike. Thought I'd use KOPS to obtain a rough starting point. Sitting on the bike and trying to keep it vertical, my left foot was on tip toe. Common sense should have suggested here was an accident waiting to happen. At the same time I attempted to drop a plumb line from my right knee, while holding the bike stationary with the rear brake. Man and bike keeled over to the left and in trying to prevent a plummet to the concrete floor, something 'went' in my left leg. The doc has diagnosed a painful, if poetic, lateral collateral ligament sprain. Ouch.