National Associaltion of Myofascial Trigger Point Therapists - Symptom Checker

Flexor Digitorum Longus / Flexor Hallucis Longus
multiple images available Image 1 Image 2 Image 3
This is the technical name of the muscle being described.  This name may be used to find additional information in any medical resource. Flexor Digitorum Longus Flexor Hallucis Longus
A group of muscles generally denotes muscles of the same function and may share a common attachment point. Foot Extensor
Muscle function, in this definition, is what the muscle could do if it was to contract by itself with the body in anatomical position.  This is a general definition of muscle function.  For more information on how muscles work together on the body please refer to a physiology or functional anatomy text.

They assist in plantar flexion (pointing toes down) and inversion.

A description of where a Myofascial Trigger Point may produce pain in the body.  This area is generally located away from the trigger point.

Pain is referred to the bottom of the foot in the area just before the toes. On occasion pain may be felt in the medial ankle and calf. The flexor hallucis longus will refer pain on the underside of the big toe as well as the 1st metatarsal.

A description of the symptoms a person may experience with trigger points in the muscle being described.

A person with TrPs in the long flexors of the toes complain of pain while they walk as well as painful contraction similar to calf cramps.


 A list of activities or positions that may either CAUSE a trigger point to manifest or PROLONG a pain condition respectively.

  1. Running or jogging on uneven or slanted surfaces.
  2. Morton foot structure.
  3. Impaired mobility of the foot.
  4. Running shoes with excessive wear on the sole and heal.
  5. Walking and running on soft sand.
  6. Inflexible sole on a shoe.

A corrective action is usually a modification of daily routine which will reduce stress on the affected muscle(s) in a person with myofascial trigger points.

  1. Possible arch supports
  2. Correction of Morton foot structure.
  3. Comfortable shoes with good shock absorption.
  4. Avoid high heels and spiked shoes.
  5. Substitute weight bearing exercises with other ones such as rowing, swimming, or bicycling.
  6. Running should resume on a flat surface and should be done to tolerance.

References : 
Simons DG, Travell JG, Simons LS, Myofascial Pain and Dysfunction: The Trigger Point Manual, vol 1, 2nd Ed. Baltimore: Williams and Wilkins, 1999.

Travell JG, Simons DG, Myofascial Pain and Dysfunction, vol 2. Baltimore: Williams & Wilkins, 1992.

This information is not intended to diagnose, treat, or cure any disease.  A proper diagnosis should be sought from a licensed health care provider.