When you have a full/complete tear of the muscles, tendons, or ligaments, the tissue has been completely severed, leaving no place where it is still connected. This means that healing a complete tear is more difficult than healing a partial tear.
It is possible to heal a complete tear using the BFST, but it typically means a longer recovery time, typically 1-2 years, and it may still require surgery. Being consistent with the BFST by using it 3-4 times daily is essential. As always, everyone's bodies and injuries are different, so what is required to heal a partial tear may be different from person to person.
However, the BFST's main job is to increase your circulation, which results in healing and strengthening the soft tissue in the entire area that you treat. Even if you do end up needing to have surgery, you can use the BFST to assist your recovery after the procedure.