Physical therapy for SI joint pain focuses on restoring stability to the pelvis and improving how forces transfer between the spine and legs. The main goals are to strengthen key muscles — especially the glutes, core, and hip stabilizers — while improving flexibility in tight structures like the hip flexors and hamstrings. Therapists often use manual techniques to realign or reduce tension around the joint, combined with exercises that help prevent future irritation. PT may also include postural training, gait correction, and activity modifications for sitting, stairs, and lifting. With consistent therapy, many people experience improved mobility and decreased pain without needing injections or surgery.