Muscle Breakdown: Flexor Hallucis Longus

What Is The Flexor Hallucis Longus

The Flexor Hallucis Longus is a strong muscle that is located in the posterior section of the lower leg. Its tendon runs down through the foot to end at the big toe and is involved in plantar flexion and inversion of the foot and big toe.

Flexor Hallucis Longus Cadaver

Flexor Hallucis Longus Cadaver.jpg

Flexor Hallucis Longus Tendon

The Flexor Hallucis Longus Tendon runs behind the Medial Malleolus and heads to the sole of the foot along the inner side of the foot. The Flexor Hallucis Longus Tendon then moves towards the big toe. Specifically, it travels in between two sesamoid bones underneath the first metatarsal. The tendon then proceeds to the base of the big toe where it inserts.

 

Flexor Hallucis Longus Pain

If you are experiencing pain in the Flexor Hallucis Longus, it is most likely the result of Flexor Hallucis Longus Tendonitis.

 

Flexor Hallucis Longus Tendonitis 

Flexor Hallucis Longus Tendonitis can arise from two main sources, overuse of the tendon or a sudden acute injury. Flexor Hallucis Longus Tendonitis often occurs in Ballet Dancers. This occurs because of the repeated time spent on their toes during performance and practice. Symptoms of Flexor Hallucis Longus Tendonitis include pain in the inner ankle which can radiate to the big toe. Additional symptoms include stiffness and pain in the morning. The R.I.C.E. protocol (rest, ice, compression and elevation) is the best way to treat Hallucis Longus Tendonitis.

 

Flexor Hallucis Longus Tendon Pain 

As we previously mentioned, Flexor Hallucis Longus Tendon Pain can indicate that you are on the road to, or already have Flexor Hallucis Longus Tendonitis. If you are experiencing the symptoms of Flexor Hallucis Longus Tendonitis, or are in a high risk activity for this type of injury, (i.e. Ballet, uphill running) you should speak to your doctor to determine an appropriate treatment plan and discuss preventative measures.

 

Flexor Hallucis Longus Pain Running

Runners who repeatedly run uphill, on uneven surfaces or on the balls of their feet have an increased likelihood of experiencing Flexor Hallucis Longus pain when running. This is because of the repeated stress and strain on the Flexor Hallucis Longus Tendon which can create small tears. Overtime, if this pain is not treated properly and activity continues to occur, Flexor Hallucis Longus Tendonitis can gradually set in.

 

Flexor Hallucis Longus Function

The function of the Flexor Hallucis Longus is to Plantar Flex the big toe and foot, and also to invert the foot.

 

Flexor Hallucis Longus Origin And Insertion

Flexor Hallucis Longus Origin

The origin of the Flexor Hallucis Longus is the lower 2/3 of the Posterior Fibula.

 

Flexor Hallucis Longus Insertion

The insertion of the Flexor Hallucis Longus is the base of the first Distal Phalanx, on the Plantar side.

 

Flexor Hallucis Longus Tendon Tear

You can partially rupture the Flexor Hallucis Longus tendon, and fully rupture the Flexor Hallucis Longus Tendon. This is common in athletes who are repeatedly pushing off, or in Ballet Dancers. If you fully rupture the Flexor Hallucis Longus, you can have it surgically repaired. Talk to your doctor to find out about the best treatment option for your situation.

 

Flexor Hallucis Longus Tendon Big Toe

As we’ve touched on, the Flexor Hallucis Longus inserts into the base of the big toe and helps to flex the big toe. If you repeatedly flex the big toe, you can be at risk for Flexor Hallucis Longus Tendonitis.

 

Flexor Hallucis Longus Tendon Transfer

Flexor Hallucis Longus Tendon Transfer is a procedure that is used to treat an Achilles Tendon rupture, or those with chronic Achilles Tendinopathy. A graft of the Flexor Hallucis Longus is harvested and then transferred to the Achilles to assist in its repair.

 

Flexor Hallucis Longus Tendonitis Taping

If you are experiencing irritation in your Flexor Hallucis Longus, you can tape the foot to help relieve some of your symptoms. This is a common treatment for those who have Flexor Hallucis Longus Tendonitis. The most popular tutorials on how to tape the Flexor Hallucis Longus use KT tape and will demonstrate exactly how to use and tape the foot.   


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Stephanie Zaban (R. Kin & MPK)

Stephanie graduated from the University of Western Ontario with an Honours Specialization BA in Kinesiology. In addition, she accomplished a Master of Professional Kinesiology, (MPK) from the University of Toronto.

Stephanie Zaban is a Registered Kinesiologist from the College of Kinesiologists of Ontario.

https://www.yourhousefitness.com/personal-trainers/stephanie-zaban
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