43 days ago I fell on some steps and from that day till yesterday I hadn't bent my left knee. But then yesterday I went to the physiotherapist for the first time and my knee was made to start bending, and even got to bend it myself for now. The tendons are still rather tight and the muscle much less than it was. Even with the physio's help, I could only bend it 85 degrees, and when measured my left thigh was 6 centimetres smaller in circumference than my right. Clearly I have all the work ahead of me.
But there is a bright side: yesterday, I also took my first steps without crutches and slept for the first night without a knee immobiliser off (a weird feeling indeed). I still need to keep the immobiliser on during the day, so I walk with one leg straight, but the fact that I can now hold hands or put an arm around my wife as we stroll makes it all OK.