Intrinsic Muscle Strength in Plantar Fasciitis


It is many blog posts on the to the impression that a particular treatment is effective. However, even placebo treatments can show an improvement in this ailment simply because they make it appear that the technique was effective. In reality, people who suffer from this type of fasciitis may experience an improvement in the condition without any intervention; this is just an unusual attribute of the condition itself.

Studies and Methodologies, Intrinsic Muscle Strength

There are many current treatments for plantar fasciitis did not undergo the kind of rigorous testing and peer-review process that is normally expected. Studies that did exist often contained serious flaws in the methodology employed by the researchers. It is necessary to the accepted standards and best practices in clinical research.

A recently published case study is cited here, and it can be used as an example of the process that is widely accepted in research fields. This study used evidence to make an effective plan for treatment. Uniform or identical treatment plans are seldom effective for everyone, so people who propose them should be treated with a healthy dose of skepticism.

Intrinsic Muscle Strength Case Study

In this study, a control group was used to differentiate between experienced runners who have the condition and those runners who do not have any pain or inflammation in the plantar fascia. The study was published in the Journal of Science and Medicine in Sport. Although the study with a larger control group is better, this study did a good job on making the selected group representative of the general population.

The methods were sound, and the analytical statements were made based on empirical evidence. In this study, the control group of runners without any foot condition had a measurably larger volume and intrinsic muscle strength than the test group of runners with plantar fasciitis. However, this is clearly a case control type of study, so no conclusions can be reached simply by examining the findings. In other words, discernible muscle weakness was found in the test group, but there is no positive correlation between this lack of volume in the proximal plantar muscles and the fasciitis.

Concluding Remarks

There is no harm in addressing intrinsic foot muscle weakness alongside with the fasciitis problem. It is not absolutely necessary to prevent a clinical treatment plan from being developed based on existing evidence, and the research studies aid in this process. As long as the theoretical basis of the treatment plan maintains coherency with the evidence presented, it should produce the desired results. Evidence-based treatment plans are not infallible, but they build the foundation for future efforts.


In this instance, an athlete was originally diagnosed with minor quadriceps muscle strain and was treated for four weeks, with unsatisfactory results. When he came to our clinic, the muscle was not healing, and the patients’ muscle tissue had already begun to atrophy.

Upon examination using MSUS, we discovered that he had a full muscle thickness tear that had been overlooked by his previous provider. To mitigate damage and promote healing, surgery should have been performed immediately after the injury occurred. Because of misdiagnosis and inappropriate treatment, the patient now has permanent damage that cannot be corrected.

The most important advantage of Ultrasound over MRI imaging is its ability to zero in on the symptomatic region and obtain imaging, with active participation and feedback from the patient. Using dynamic MSUS, we can see what happens when patients contract their muscles, something that cannot be done with MRI. From a diagnostic perspective, this interaction is invaluable.

Dynamic ultrasonography examination demonstrating
the full thickness tear and already occurring muscle atrophy
due to misdiagnosis and not referring the patient
to proper diagnostic workup

Demonstration of how very small muscle defect is made and revealed
to be a complete tear with muscle contraction
under diagnostic sonography (not possible with MRI)


Complete tear of rectus femoris
with large hematoma (blood)


Separation of muscle ends due to tear elicited
on dynamic sonography examination

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