Bony Limitations There can be osteophyte, aka “Bone Spurs”, that have formed in joint spaces or near the joints of the foot and ankle that can create limitations to ankle dorsiflexion mobility. The only way to determine for sure if there is bone limiting mobility is through radiographic imaging aka x-ray. If you do have some type of bony limitation in ankle dorsiflexion, stop trying to foam roll or lacrosse ball your way out of it. The only way to change ankle mobility due to a bony limitatio