Plantar fasciitis is the most common cause of infracalcaneal pain and accounts for 11% to 15% of all foot complaints that require professional treatment.[4]Buchbinder R. Plantar fasciitis. N Engl J Med. 2004;350:2159-66.
http://www.ncbi.nlm.nih.gov/pubmed/15152061?tool=bestpractice.com
It has been estimated that around 10% of the population in the US will develop plantar fasciitis in their lifetime. Active individuals appear to develop plantar fasciitis at an even greater rate than the general population, with incidence rates ranging from 8% to 21% among athletes and runners.[3]Schneider HP, Baca JM, Carpenter BB, et al. American College of Foot and Ankle Surgeons clinical consensus statement: diagnosis and treatment of adult acquired infracalcaneal heel pain. J Foot Ankle Surg. 2018 Mar-Apr;57(2):370-81.
https://www.jfas.org/article/S1067-2516(17)30619-1/abstract
http://www.ncbi.nlm.nih.gov/pubmed/29284574?tool=bestpractice.com
Incidence peaks between the ages of 40 and 60 years.
It is a bilateral complaint in about one third of patients.[4]Buchbinder R. Plantar fasciitis. N Engl J Med. 2004;350:2159-66.
http://www.ncbi.nlm.nih.gov/pubmed/15152061?tool=bestpractice.com
A systemic cause is more likely in people presenting with bilateral pain.[5]Paige NM, Nouvong A. The top 10 things foot and ankle specialists wish every primary care physician knew. Mayo Clin Proc. 2006;81:818-822.
http://www.mayoclinicproceedings.org/article/S0025-6196%2811%2961736-9/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/16770982?tool=bestpractice.com
[6]Burns PR, Scanlan RL, Zgonis T, et al. Pathologic conditions of the heel: tumors and arthritides. Clin Podiatr Med Surg. 2005;22:115-136.
http://www.ncbi.nlm.nih.gov/pubmed/15555848?tool=bestpractice.com
Plantar fasciitis is not gender specific and affects about 2 million of the American population per year.[7]Irving DB, Cook JL, Menz HB. Factors associated with chronic plantar heel pain: a systematic review. J Sci Med Sport. 2006;9:11-22.
http://www.ncbi.nlm.nih.gov/pubmed/16584917?tool=bestpractice.com
It is estimated to account for over 1 million physician visits annually in the US.[8]Rhim HC, Kwon J, Park J, et al. A systematic review of systematic reviews on the epidemiology, evaluation, and treatment of plantar fasciitis. Life (Basel). 2021 Nov 24;11(12).
https://www.mdpi.com/2075-1729/11/12/1287
http://www.ncbi.nlm.nih.gov/pubmed/34947818?tool=bestpractice.com
It usually presents as a chronic condition, with symptom duration often greater than 1 year prior to seeking treatment.[9]Koc TA Jr, Bise CG, Neville C, et al. Heel pain - plantar fasciitis: revision 2023. J Orthop Sports Phys Ther. 2023 Dec;53(12):CPG1-39.
https://www.jospt.org/doi/10.2519/jospt.2023.0303
http://www.ncbi.nlm.nih.gov/pubmed/38037331?tool=bestpractice.com
In two retrospective cohort studies involving 432 individuals diagnosed with chronic plantar heel pain, the mean duration of symptoms ranged from 13.3 to 14.1 months.[10]Klein SE, Dale AM, Hayes MH, et al. Clinical presentation and self-reported patterns of pain and function in patients with plantar heel pain. Foot Ankle Int. 2012 Sep;33(9):693-8.
https://journals.sagepub.com/doi/10.3113/FAI.2012.0693
http://www.ncbi.nlm.nih.gov/pubmed/22995253?tool=bestpractice.com
[11]Yi TI, Lee GE, Seo IS, et al. Clinical characteristics of the causes of plantar heel pain. Ann Rehabil Med. 2011 Aug;35(4):507-13.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3309235
http://www.ncbi.nlm.nih.gov/pubmed/22506166?tool=bestpractice.com