For the record, the reality is I have a partial tear of my hamstring and some calf muscle separation. This has given a range of very pretty bruising behind my knee, and I can't put weight on the leg with the knee anything other than straight or approximating straight either on the bike or walking.
I am on the whole downplaying this.
I am not, however, doomed.
There should be gradual improvement in the next few weeks, and indeed prognosis is full recovery; this depends on me taking the kind of care a religious zealot would give to the set of rules they operate within. It's not just that doing things outside of the boundaries will delay healing, but they could actually create a more serious injury, which the prognosis for would be a lot worse. Imagine that, stupidity could take me out of action and possibly into surgery. So, the moral of this is don't be stupid.
At least I have facts. I like facts. You know where you stand with those.
Waving goodbye in the spirit of realism to a few things, but it's transient, temporary, and in the words of the Persians this too shall pass ...