Limited knee Mobility - need to pedal an ellipse

Gar
Posts: 1
Joined: 21 Sep 2018, 6:49pm

Limited knee Mobility - need to pedal an ellipse

Postby Gar » 21 Sep 2018, 7:15pm

Hi, I have had two full knee replacements, the right one has a limited bend no more than 85 degrees, since the last operation I have been unable to ride my bike. (although I have attempted to on several occasions and resulted in falling off) I believe there is a crank manufactured with an attachment that enables one to pedal in a elliptical arc instead of a circular one. Can anybody give me any guidance on sourcing a crank of this nature. Thank You; Gareth

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Graham
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Posts: 5706
Joined: 14 Dec 2006, 8:48pm

Re: Limited knee Mobility - need to pedal an ellipse

Postby Graham » 21 Sep 2018, 8:31pm

I am not a user of such, but am aware of swing cranks from Highpath Engineering :
https://highpath.co.uk/

EDIT :
Be not afraid. This is not the Gar of old . . . . (probably) . . . .


thirdcrank
Posts: 28000
Joined: 9 Jan 2007, 2:44pm

Re: Limited knee Mobility - need to pedal an ellipse

Postby thirdcrank » 7 Oct 2018, 4:46pm

There's an illustrated explanation of swing cranks here on the late Chris Bell's website

http://www.cornant.uk/eng/swingcrank.html

That link also points to Highpath to which Graham has already linked