Can't Straighten Your Knee Fully? Unmask the Tiny Muscle Locking the Joint
Forcing your knee straight when the internal unlock key is jammed only causes wear and tear.
Schematic diagram — not to scale. Illustrative only; not a medical image or diagnostic claim. Treatment is individualized after in-person assessment.
You stretch your hamstrings and quads constantly, yet when you stand or walk, your knee can't quite lock back smoothly — leaving a vague, deep ache right in the back of the knee crease.
Popliteus is a small, deep muscle sitting diagonally behind the knee. Its sole job is to unlock the knee from full extension. When it goes into chronic fibrotic hypertonicity, the knee's screw-home rotation mechanic jams and the joint stays semi-flexed.
Deep, localized manual therapy behind the knee capsule to down-regulate popliteus tone, letting the knee access its natural terminal extension effortlessly.
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