• Glen A Whittaker, Shannon E Munteanu, Hylton B Menz, Daniel R Bonanno, James M Gerrard, and Karl B Landorf.
• Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia. g.whittaker@latrobe.edu.au.
• Bmc Musculoskel Dis. 2019 Aug 17; 20 (1): 378.

BackgroundCorticosteroid injection is frequently used for plantar heel pain (plantar fasciitis), although there is limited high-quality evidence to support this treatment. Therefore, this study reviewed randomised trials to estimate the effectiveness of corticosteroid injection for plantar heel pain.MethodsA systematic review and meta-analysis of randomised trials that compared corticosteroid injection to any comparator. Primary outcomes were pain and function, categorised as short (0 to 6 weeks), medium (7 to 12 weeks) or longer term (13 to 52 weeks).ResultsA total of 47 trials (2989 participants) were included. For reducing pain in the short term, corticosteroid injection was more effective than autologous blood injection (SMD -0.56; 95% CI, - 0.86 to - 0.26) and foot orthoses (SMD -0.91; 95% CI, - 1.69 to - 0.13). There were no significant findings in the medium term. In the longer term, corticosteroid injection was less effective than dry needling (SMD 1.45; 95% CI, 0.70 to 2.19) and platelet-rich plasma injection (SMD 0.61; 95% CI, 0.16 to 1.06). Notably, corticosteroid injection was found to have similar effectiveness to placebo injection for reducing pain in the short (SMD -0.98; 95% CI, - 2.06, 0.11) and medium terms (SMD -0.86; 95% CI, - 1.90 to 0.19). For improving function, corticosteroid injection was more effective than physical therapy in the short term (SMD -0.69; 95% CI, - 1.31 to - 0.07). When trials considered to have high risk of bias were excluded, there were no significant findings.ConclusionsBased on the findings of this review, corticosteroid injection is more effective than some comparators for the reduction of pain and the improvement of function in people with plantar heel pain. However, corticosteroid injection is not more effective than placebo injection for reducing pain or improving function. Further trials that are of low risk of bias will strengthen this evidence.RegistrationPROSPERO registration number CRD42016053216 .

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