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Inferior Gemellus

Region

Origin & Insertion

['Origin: Ischial tuberosity', 'Insertion: Greater trochanter via obturator internus tendon']

Synergistic Muscles

['Obturator internus', 'Quadratus femoris']

Joints

['Hip']

Primary Actions

['External rotation of hip']

Nerve & Spinal Segment

Nerve to quadratus femoris

Sacral plexus; L4–S1

Interesting

Often acts together with superior gemellus. [Moore’s]

Reversal of Action

Stabilize pelvis as hip externally rotates

Common Dysfunctions

Hip tightness, deep gluteal syndrome

How to Stretch

Hip IR with adduction (figure 4 variations).

Trigger Points

How to Strengthen

Band ER at 90° hip flexion.

Concentric Action

Externally rotate hip

Applications:

Helpful in retraining deep rotator coordination

Eccentric Action

Control medial rotation and flexion

Isotonic Action

Clamshells with external rotation focus

Related Conditions

['Sciatica', 'Hip ER dysfunction']

Isometric Action

Maintain hip in neutral/ER under load

Exercise Ideas

['Seated hip ER', 'Clamshells', 'Bridge with band ER']

Spry Juncture, LLC

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