When you think of the most common lower body injuries, you think ankle sprains, shin splints, runner’s knee, jumper’s knee, fasciitis, or Achilles tendinitis. When you have these injuries, you treat the injured area. We might be overlooking a little, but big deal. Dysfunction in the big toe influences every step you take, every lunge, every jump, and every stride of every run. Ultimately, it can be a direct result in many of the aforementioned common lower body injuries. If you have dysfunction (pain, instability, or hypomobility) at the first big toe joint (MTP joint), it could wreak havoc on the entire kinetic chain.
Normal range of motion of the big toe is 40° flexion, 80-90° extension, and 10-20° abduction and adduction. Lack of motion, especially extension, will create compensatory movement at other joints. Common big toe issues such as, hallux valgus (bunion), hallux rigidus, turf toe, sesamoiditis, and gout will limit toe mobility. Below is an image of a client who demonstrates normal range or motion on the right and limited toe extension on the left.