Miami Dolphins QB Ryan Tannehill (knee) will be able to participate in all of the Dolphins’ offseason activities. He will not undergo reconstructive surgery on his severely sprained knee. Weeks ago, Tannehill passed a battery of tests that determined the functionality and stability of his knees. Furthermore, Tannehill will not be more susceptible to future anterior cruciate ligament injuries in his left knee. Tannehill’s rigorous rehabilitation program, including adult stem cell treatment, brought just as good results as surgery would have, according to team doctors and athletic trainers. Tannehill will play the 2017 season with a brace on the knee.