Lower Extremity Muscle Performance and Foot Pressure in Patients Who Have Plantar Fasciitis with and without Flat Foot Posture

Jin Hyuck Lee, Ki Hun Shin, Taek Sung Jung and Woo Young Jang ()
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Jin Hyuck Lee: Department of Sports Medical Center, Korea University College of Medicine, Seoul 02841, Republic of Korea
Ki Hun Shin: Department of Sports Medical Center, Korea University College of Medicine, Seoul 02841, Republic of Korea
Taek Sung Jung: TMX Limited, Seoul 06286, Republic of Korea
Woo Young Jang: Department of Sports Medical Center, Korea University College of Medicine, Seoul 02841, Republic of Korea

IJERPH, 2022, vol. 20, issue 1, 1-11

Abstract: Abnormal foot posture and poor muscle performance are potential causes of plantar fasciitis (PF). However, no study has compared the differences between lower extremity muscle performance and foot pressure in patients who have PF with and without abnormal foot postures. This study aimed to compare the differences in lower extremity muscle performance, such as in the hip, quadriceps, hamstring, and plantar flexor, and foot pressure in patients who have PF with and without flat foot postures. Seventy patients with plantar heel pain were enrolled (37 flat feet and 33 without flat feet). The hip muscle strength was measured using a handheld digital dynamometer. The strength and reaction time of the quadriceps, hamstring, and plantar flexor muscles were evaluated using an isokinetic device. Foot pressure parameters were assessed using pedobarography. The strength of the plantar flexor muscles was significantly lower ( p = 0.008), while the reaction time of the plantar flexor muscles was significantly faster ( p = 0.007) for the involved feet of PF patients with flat feet than in those without flat feet. This study confirmed the differences in muscle performance between patients who have PF with different foot postures. Therefore, clinicians and therapists should plan treatment considering the differences in these characteristics for the management of these patients.

Keywords: plantar fasciitis; foot posture; muscle strength; muscle reaction time; foot pressure (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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