The Strassburg Sock

 How does the "Strassburg Sock" work?

This easy to use, inexpensive device is designed to keep tension on the tissue (plantar fascia) so it heals in a stretched position at night. In this way many users find a reduction of their morning pain, some have noticed a reduced recovery time and yet others have reduced the need for medications.

When worn as prescribed, it does not allow the plantar fascia to contract while in the prone or supine position. The device holds the ankle and forefoot joints in a position of slight dorsiflexion that prevents a position of plantarflexion, that is the plantar fascia is not allowed to contract.

In addition the involuntary stretching of the plantar fascia over a long period of time helps to strengthen the foot's arch.

 What is the "Strassburg Sock"?

The device consists of a tubular knit material that fits "over the calf" with 2 attached adjustable straps to maintain the foot in a neutral to slightly stretched position. When worn at night the device will apply a force which results in the reduction and/or elimination of the pain felt during those first steps in the morning.

What are the advantages of the "Strassburg Sock"?

 Medical Practitioners - Why should I recommend the Strassburg Sock? How is it different from the rigid night splint?

The Study

An independent research study using the Strassburg SockTM as the exclusive night splint was published in the July/August 2002 issue of the Journal of Foot and Ankle Surgery. The hypothesis of the study was this. When other injuries occur, standard medical practice is to place and maintain the damaged tissue in an anatomically correct position for the duration of the healing period. If the proper position is not maintained, then swelling, muscular contracture, pain, and delayed healing are seen. The same concept can be extrapolated to plantar fasciitis. Treatments for plantar fasciitis should be focused toward addressing the abnormal pronation and placing the damaged ligament at anatomic length, without uncontrolled stretching

The Results

This study, the second largest ever to evaluate the effectiveness of a night splint consisted of 160 patients. 89 patients used the Strassburg SockTM and 71 were prescribed a gastrocnemius-soleus stretching regimen. Patients using the Strassburg SockTM were told not to stretch during this treatment period, but were instructed to wear the sock for at least 6 hours at night. The results of the study were as follows:

All patients in the study were at least a 7 on a 10 visual analogue scale for painful plantar fasciitis.

How is it different from the rigid night splint?

Traditional hard plastic night splints concentrate on ankle-dorsiflexion by holding the ankle in a neutral or -5 to -10 degree position. The theory being that by resisting noctournal contracture of the gastrocnemius-soleus complex you will limit plantar-flexion of the ankle and improve symptoms. The Strassburg SockTM, by dorsiflexing the toes engages the Windlass Mechanism and provides a more complete tissue-specific stretch to the plantar fasciia. In the morning, when the Strassburg SockTM is removed, the fasciia is already in its maximally stretched position where it has been comfortably held all night.

The Strassburg SockTM comes in two sizes, the regular fits a calf size to 16” around and the large fits calf sizes 16” to 21” around. You put it on as you would a normal sock putting the “D” ring just below the knee. For those with a shorter calf, pull it up to the knee and slightly tuck the extra material under prior to attaching the base strap.

After attaching the base strap around the upper portion of the calf, set the ankle in a 90 degree position and pass the toe (tension) strap through the “D” ring. Raise the toes about 1” off of the ground and attach the Velcro strap. If you feel discomfort in the foot or toes you have it on to tight and you should release some of the tension. The Strassburg SockTM should not be uncomfortable.

Some doctors suggest that their patients wear the Strassburg SockTM in the evening after dinner while they read the paper or watch TV. This way they get 3-4 hours stretch combined with 6-8 hours while sleeping. Now you’re looking at almost a half of the day were the plantar fascia is healing in its maximally stretched position. Many patients tell us they feel some relief after the first couple of nights use


Measure AROUND calf at the widest point.



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Physio supplies
Location: Foot products / Plantar Fasciitis / The Strassburg Sock