What injury is commonly associated with the 5th metatarsal?

The injury commonly associated with the 5th metatarsal is indeed the Jones fracture and avulsion fracture. The 5th metatarsal is a frequent site of injury, particularly for athletes and active individuals. The Jones fracture specifically occurs at the base of the 5th metatarsal, in a region that is less vascular and therefore has a higher risk of nonunion if not treated properly. This type of fracture can happen due to stress on the foot, often from activities such as running or pivoting.

Avulsion fractures occur when a small piece of bone is pulled away from the main bone by a tendon or ligament. In the case of the 5th metatarsal, this can happen due to the action of the peroneus brevis tendon when the foot twists or rolls. These two types of fractures are common because of the unique anatomy of the bone and its location, making them significant concerns in athletic training and rehabilitation.

Other options represent less common injuries or conditions for the 5th metatarsal. Stress fractures do occur at this site, but they are distinct from the more serious and clinically significant Jones and avulsion fractures. Compound fractures and tendonitis are less directly associated with this specific