The study aims to investigate the effectiveness of gastrocnemius stretching exercises on plantar heel pain intensity, foot mobility, and function in patients with plantar fasciitis.

This randomized controlled trial will include patients diagnosed with plantar fasciitis. Participants will be randomly assigned to either a study group performing gastrocnemius stretches or a control group. Both groups will receive ultrasound therapy and fascia strengthening exercises. The study group will additionally perform specific gastrocnemius stretching exercises. Outcome measures will be assessed before and after 4 weeks of intervention and will include pain intensity, foot mobility using an inversion/eversion device, and function using the Foot and Ankle Ability Measure. The study hypothesizes that the study group will demonstrate greater improvements in pain, foot mobility, and function compared to the control group. The study findings could guide physical therapy interventions for patients with plantar fasciitis.

Inclusion Criteria:

1. Pain reproduced with palpation of the plantar fascia
2. localized and sharp but not radiating
3. worse in the initial step after and an extended period of rest
4. decreased initially after the first steps but exacerbated with increased activityat least 6 weeks
5. unresponsive conservative form of plantar fasciitis care (ie, rest, stretching, full-length silicone insole, prescription NSAIDs when taken for a period of 2 weeks)

Exclusion Criteria:

1. history of previous steroid injections
2. previous surgery of the foot, lumbar spine disc herniation or back injury
3. patients with rheumatic diseases (e.g., rheumatoid arthritis, spondyloarthropathy, gout disease, enthesopathy, Sjogren's syndrome, and systemic lupus erythematosus)