Introduction Tendinopathies in dogs often affect the bicipital and supraspinatus muscles. Diagnoses are made by clinical, radiological, and ultrasonographic examinations. Dogs are treated conservatively with anti-inflammatory drugs, infiltration into the tendon sheath, injection into the joint using steroidal anti-inflammatory drugs or surgically performing tenotomy or tenodesis. Extracorporeal radial shock wave therapy (ESWT) in dogs has recently become a common treatment form in musculoskeletal injuries. 3 dogs with tendinopathies in the shoulder area were treated with ESWT Ground reaction forces were measured before and after therapy to evaluate the treatment. Material and methods 3 dogs with front limb lameness due to tendinopathies of the bicipital and supraspinatus muscle were treated with ESWT 3 times at a weekly interval. Treatment evaluation was determined by force plate measurements on a treadmill. 3 measurements (peak vertical force, mean vertical force, and vertical impulse) were used to calculate the symmetry factor. Results Statistical evaluation of the measurements showed a distinct improvement of the symmetry factors during treatment. The dogs also improved clinically and the lameness resolved. One dog was rechecked 1 year later and showed only minimal radiographic and ultrasonographic lesions. Conclusion ESWT may be used as an alternative therapy to conservative treatments or surgical interventions in tendinopathies.