Objective To investigate the clinical efficacy of extracorporeal shock wave(ESWT)combined with stretching training in the treatment of chronic plantar fasciitis.Methods A prospective case-control study was conducted to include the patients with chronic plantar fasciitis who had been admitted to Department of Orthopaedic Trauma,Nanfang Hospital,Southern Medical University from June 2021 to June 2022.A SPSS random number generator was used to randomize the patients into an experimental group(receiving treatment with ESWT combined with stretching training)and a control group(receiving stretching training only).Shear wave elastography(SWE)was used to quantitatively evaluate the elastic modulus of the plantar fascia.The 2 groups were compared in terms of visual analogue scale(VAS)pain score,plantar fascia thickness,and elastic modulus of the plantar fascia in the patients at 12 weeks after treatment;the correlation between VAS pain score and elastic modulus of the plantar fascia was examined using Spearman analysis in the patients at 12 weeks after treatment.Results This study included a total of 41 patients(52 feet),20 males and 21 females with an age of(49.9±8.2)years.There were 16 left sides,14 right sides and 11 bilateral sides affected.The course of the disease was 7.0(6.0,12.0)months.The 2 groups were compa-rable because there were no significant differences in the general data before treatment between them(P＞0.05).The VAS pain score at 12 weeks after treatment for the experimental group was 1.0(1.0,2.0)points,significantly lower than that for the control group[3.0(2.0,3.0)points](P＜0.05).The elastic modulus of the plantar fascia at 12 weeks after treatment for the experimental group was(79.48±17.65)kPa,significantly higher than that for the control group[(57.08±14.16)kPa](P＜0.05).How-ever,there was no statistically significant difference between the 2 groups in the thickness of the plantar fascia at 12 weeks after treatment(P＞0.05).There was a significant correlation between VAS pain score and elastic modulus of the plantar fascia after 12 weeks of treatment(r=-0.708,P＜0.001).Conclusion In the treatment of chronic plantar fasciitis,combination of ESWT and stretching training is more effective than stretching training only.
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