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I forget, what does pain behind the knee mean?(4 posts)

I forget, what does pain behind the knee mean?nuggets
Aug 6, 2003 6:06 PM
It has been a while since I set up a new bike. Which way do I need to move my saddle if I am having pain behind my knees?

re: I forget, what does pain behind the knee mean?Terry_Swisher_PMF
Aug 6, 2003 6:16 PM
Get off the bike.
Rule of thumb - uuh- knee...Al1943
Aug 6, 2003 6:31 PM
There is a rule of thumb that says if the pain is in the front- raise the saddle and if in the back- lower the saddle. Only I don't really believe the second part and I think the previous poster, Terry, has a better answer.
ack......not sure what thumb you are referring to.funknuggets
Aug 7, 2003 9:34 AM

the standard caveat.... blah blah, everyone is different... has different histories and injuries... lah de dah... hard to diagnose without seeing you and your fit, as there are tons of variables that could be contributing to your maladies.

The rule of thumb is this. Pain in the front, move saddle forward, Pain in the back, move saddle back. This is only a rule of thumb and the reason for this is the arbitrary "ideal" positioning of knee relative to pedal spindle at the 3'clock position. Body structure and shear forces can place too much stress at the front of the knee if the pedal extends too far out in front of the knee, so you would 'typically' get sub-patellar pain if this were the case, but you indicate pain in the rear. This is 'typically' caused by a saddle that is too far forward, thus causing the greater load to occur at the rear of the stroke, thus a pulling motion that put too high a stress on the smaller muscles of the leg. However, too high a saddle can also cause this due to high calf strain, just like Al1943 indicated.

Typically saddle height problems manifest themselves in more lateral type injuries, as it causes extreme angles at the joints, particularly knees, and hips,lower back, and sometimes ankles. So pain inside joints, tendonitis, and acl type chronic pain, etc often are a result of this.

However, improper positioning is often a combination of things. The most important is to get your height first, then fore/aft. Use the sock foot ankle drag at the bottom of the pedal stroke with no hip tilt for this. I have found this to be one of the more reliable methods. Then use the plumb bob over 3'o clock pedal spindle at bottom (most forward point) of kneecap for this. This will put you in the ball park.

So sayeth the Funk.