Introduction: Plantar fasciitis (PF) is not an uncommon cause of heel pain whose treatment is not yet standardized. Although platelet rich plasma (PRP) and corticosteroid (CS) injections are the two commonly used modalities, yet not much importance has been given to the comparison of their roles in sustained functional improvement. Aim: To study the effect of PRP and CS injections in PF and compare their effectiveness with respect to pain relief and improvement of functional and patient satisfaction. Material & methods: 50 cases were randomized into two groups: 25 patients (Group A) received a single injection of autologous PRP and 25 in Group B received a single injection of CS (40 mg of methylprednisolone) by the random selection. A structured home exercise program was demonstrated to both the groups, as baseline management. The effectiveness was assessed and compared in pre-injection and post-injection at 3 and 6 months follow-up. Visual Analog Scale (VAS), Roles and Maudsley (RM), and Foot Function Index (FFI) scoring systems were used as outcome measures. Results: Mean ± SD of age was calculated to be, 42.31 ± 7.6 for Group A and 42.29 ± 8.0 for Group B. Most of the participants in Group A [16 (64%)] & in Group B [15 (60%)] were females Mean VAS score at different follow up time reveals, at 3rd month (Mean VAS 3.05 & 4.82 in group A & B respectively) and 6th month later (Mean VAS 1.67 & 4.12 in group A & B respectively) follow up period, significant improvement was found in group A. There was a significant improvement of FFI and RM score as well as at 6 months follow‑up (P = <0.001). Conclusion: Injection of CS had an early effect, which is not sustainable, whereas PRP was found to have a prolonged impact on pain relief and better patient satisfaction with treatment outcomes. Therefore, PRP can be advised for sustained and prolonged improvement in PF.