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Fixators (Muscle) - Glossary Term Illustration

Fixators (Muscle)

Fixators are muscles that act to reduce or prevent movement of joints proximal to the joint in motion.

Fixators (Muscle)

Fixators: Fixators are muscles that act to reduce or prevent movement of joints proximal to the joint in motion. For example, the muscles of the core (rectus abdominis , external obliques , internal obliques , quadratus lumborum , erector spinae ) are important fixators, reducing trunk motion during motion of the arms or legs.

  • Note: For analysis purposes, it is important to differentiate "fixators" from "stabilizers." A stabilizer improves arthrokinematics by maintaining optimal alignment of joint surfaces during joint actions. For more information, check out stabilizer .

For additional information, including a video lecture:

Functional Roles of Muscles Glossary Terms:

Articles listing all of the muscles by functional role for each joint action:

Examples of Hip Extension Kinesiology Analysis, including Fixators:

Hip Extension

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