• 1

    Irving DB, Cook JL, Menz HB: Factors associated with chronic plantar heel pain: a systematic review. J Sci Med Sport 9: 11, 2006.

  • 2

    Neufeld SK, Cerrato R: Plantar fasciitis: evaluation and treatment. J Am Acad Orthop Surg 16: 338, 2008.

  • 3

    Wearing SC, Smeathers JE, Urry SR, et al.: The pathomechanics of plantar fasciitis. Sports Med 36: 585, 2006.

  • 4

    Sarrafian SK: “Functional Anatomy of the Foot and Ankle,” in Sarrafian’s Anatomy of the Foot and Ankle: Descriptive, Topographic, Functional, 3rd Ed, edited by AS Kelikian, p 507, Lippincott Williams & Wilkins, Philadelphia, 2011.

    • PubMed
    • Search Google Scholar
    • Export Citation
  • 5

    Stecco C, Corradin M, Macchi V et al.: Plantar fascia and its relationship with Achilles and paratenon. J Anat 223: 665, 2013.

  • 6

    Thomas JL, Christensen JC, Kravitz SR et al.: The diagnosis and treatment of heel pain: a clinical practice guideline revision 2010. J Foot Ankle Surg 49: S1, 2010.

  • 7

    Davies MS, Weiss GA, Saxby TA: Plantar fasciitis: how successful is surgical intervention? Foot Ankle Int 20: 803, 1999.

  • 8

    Lemont H, Ammirati KM, Usen N: Plantar fasciitis: a degenerative process (fasciosis) without inflammation. JAPMA 93: 234, 2003.

  • 9

    McMillan MA, Landorf KB, Gilheany MF, et al.: Ultrasound guided corticosteroid injection for plantar fasciitis: randomised controlled trial. BMJ 344: e3260, 2012.

    • PubMed
    • Search Google Scholar
    • Export Citation
  • 10

    Aqil A, Siddiqui MR, Solan M, et al.: Extracorporeal shock wave therapy is effective in treating chronic plantar fasciitis: a meta-analysis of RCTs. Clin Orthop Relat Res 471: 3645, 2013.

    • PubMed
    • Search Google Scholar
    • Export Citation
  • 11

    Ahmad J, Karim A, Daniel JN: Relationship and classification of plantar heel spurs in patients with plantar fasciitis. Foot Ankle Int 37: 994, 2016.

  • 12

    Osborne HR, Breidahl WH, Allison GT: Critical differences in lateral X-rays with and without a diagnosis of plantar fasciitis. J Sci Med Sport 9: 231, 2006.

    • PubMed
    • Search Google Scholar
    • Export Citation
  • 13

    Johal KS, Milner SA: Plantar fasciitis and the calcaneal spur: fact or fiction? Foot Ankle Surg 18: 39, 2012.

Plantar Fasciitis or Flexor Digitorum Brevis Myositis

Is It Time to Reconsider the True Causes of Heel Pain?

John F. Grady Advocate Christ Medical Center, Oak Lawn, IL; Foot & Ankle Institute, Oak Lawn, IL; Foot & Ankle Institute for Research, Oak Lawn, IL.

Search for other papers by John F. Grady in
Current site
Google Scholar
PubMed
Close
 DPM
,
Darshan Nagesh Advocate Christ Medical Center, Oak Lawn, IL.

Search for other papers by Darshan Nagesh in
Current site
Google Scholar
PubMed
Close
 DPM
,
Trevor Smolinski Department of Surgery, Advocate Christ Medical Center, Oak Lawn, IL.

Search for other papers by Trevor Smolinski in
Current site
Google Scholar
PubMed
Close
 DPM
, and
Hannah C. Ostermann Foot and Ankle Associates, Oak Lawn, IL.

Search for other papers by Hannah C. Ostermann in
Current site
Google Scholar
PubMed
Close
 BS

Background: As common as plantar fasciitis is, there’s a lack of evidence regarding the true pathophysiologic process causing plantar fasciitis and plantar heel pain in general. This may partially explain the high variability and outcomes with current treatment of recalcitrant plantar fasciitis. Although Lemont reported myxoid degeneration of plantar fascia with histologic analysis of patients with fasciitis, muscle biopsy results were not reported. So far it appears we have not focused on the muscular component that may be present with plantar heel pain in general and in patients we diagnose with plantar fasciitis in particular.

Methods: In this article we performed a retrospective analysis of biopsy results from five patients with the diagnosis of recalcitrant plantar fasciitis to determine whether this diagnosis was correct or whether other component pathologies contribute to the chronicity of symptoms or to the failure of treatment.

Results: Three of the five pathology reports included specific mention of inflammation, degeneration and atrophy of the intrinsic musculature consistent with myositis. Two of these showed lymphocytic infiltration in the muscle consistent with inflammation, with no signs of inflammation in the fascia. One showed inflammation of the fascia without signs of inflammation of the muscle.

Conclusions: This small study introduces the idea that intrinsic myositis may contribute to, or be responsible for some cases of plantar heel pain and plantar fasciitis. This may be important in changing the way we deal with plantar heel pain in the future.

Corresponding author: John F. Grady, DPM, Foot & Ankle Institute, 4650 Southwest Hwy, Oak Lawn, IL 60453. (E-mail: jgrady@footandankleinstitute.com)
Save