To treat shin splints with physical therapy, start with rest and ice to reduce pain and inflammation. Gradually introduce stretching exercises for the calves and Achilles tendon to relieve tension. Strengthen the lower leg muscles with exercises like toe raises and heel drops. Cross-training with low-impact activities like swimming or cycling can maintain fitness while allowing healing. Address biomechanical issues, such as improper footwear or running technique, and progressively return to weight-bearing exercises as pain subsides.