On Thursday, April 6, 2017 at 5:01:33 PM UTC-7, Tim McNamara wrote:
On Thu, 6 Apr 2017 18:39:40 -0400, Frank Krygowski
wrote:
A friend in a distant city recently phoned me about her knee problem.
She described a lump behind her knee, and said that massaging it, etc.
generates a sort of "twanging" feel, as if a tendon is being plucked.
An electrical sensation then travels down into her foot. (I think I'm
remembering that correctly.)

She saw a physical therapist today, who suggested that she may be
bicycling in a "hamstring dominant" mode. Supposedly she's going to
be set up with a bike fit expert. But I've seen her ride and don't
recall noticing anything unusual about bike fit or pedaling.

However, I don't consider myself a bike fit expert. So: Has anyone
here heard of similar ailments, or of "hamstring dominant" cycling?

No. But I've heard of Baker's cyst, which may be what she has.

I was going to say the same thing. http://www.mayoclinic.org/diseases-c...n/con-20023332 You would think a trained PT would pick that up immediately, so the differential DX of Baker's cyst has probably been considered and rejected -- one hopes.

-- Jay Beattie.