"joe positive" <[email hidden]> wrote in message
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Quoted message said:in rec.running 'Doug Freese said:What kind of strengthening exercises are you doing or did they
prescribe? I hope by now you know that the knee is held in place
primarily your quadicept muscles. If you quads(there are three)
There are four. Hence the name quadriceps (quad is Latin for "four"😉.
Please, please, do some research before you start to tell everybody
what's what, and how things are, and how they should be. It'll make
you seem much more credible.
You are correct there are four but and I tend to forget about rectus as
someone one told me that only three tend to guide the knee. The thigh
muscle (quadriceps) controls knee motion and keeps the patella on track
in the patello-femoral groove. If the patella is not aligned correctly
on the femur, the quadriceps muscle is imbalanced which may cause the
patella to be pulled to one side as it moves along the patello-femoral
groove. This will eventually cause damage to the cartilage.
"The Quadriceps are a group of four muscles that sit on the anterior or
front aspect of the thigh.
They are the Vastus Medialis, Intermedius and Lateralis and finally the
Rectus Femoris.
The Quadriceps attach to the front of the tibia and originate at the top
of the femur.
The exception to this rule is the Rectus Femoris which actually crosses
the hip joint and originates on the pelvis."
The rectus femoris is not dominant in knee extension when the hip is
flexed since it is already shortened and thus suffers from active
insufficiency.In essence: the action of extending a leg from a seated
position is primarily driven by the vastus lateralis, vastus medialis,
and vastus intermedius, and less by the rectus femoris.
So be it three or four, their function is the keep the patella in the
grove. When they are not in balance there is pain. I stand by the rest,
straight leg exercise to get them strengthened and balanced and minimal
movement to the knee until the pain goes away.
-Doug
