jimpolaris wrote:Only just seen your post.I have had both knees replaced the first one 21 years ago,the second one13 years ago.Initially I could only "rachet"the cranks but after putting "child"cranks I soon got to full rotation on the turbo,also I bought an adjustable crank from Hipath Engineering.the time scale from op to riding traffic free paths was about 2 months and to road was about 10 weeks.Iam 79 and still happy with 40/50 miles taken steadily.Good luck.
Wow that gives the rest of us mere mortals encouragement. Well done.