Basically, poor conformation rears its head again. Fracture of the extensor process of the third phalanx results from tension on the common extensor tendon. Healing of this fracture may result in a large, low ringbone. If the insertion of the common digital extensor tendon is strained, but the extensor process of the third phalanx does not break, a periostitis still can result, causing new bone growth and low ringbone. This type of damage is commonly referred to as buttress foot .
Some researchers are of the opinion that ringbone is an inherited condition.
Specifically, ringbone itself might not be inherited, but certainly the predisposition for the condition in the form of bad conformation can be inherited. A mare or stallion with poorly conformed legs, such as described above, is very apt to sire or give birth to an offspring with a similar conformation. Obviously, ringbone that is caused by outside trauma, such as deep wire cuts, would not involve heritability. However, one can rest assured that poor conformation in the form of pasterns that are overly upright will result in undue concussion on the pastern joint. Poor conformation also can result in increased stress on the ligaments and tendons attached to the pastern bones.