Shaft Of 5th Metatarsal Acute Fracture
Fractures of the proximal portion of the fifth metatarsal may be classified as avulsions of the tuberosity or fractures of the shaft within 1.5 cm of the tuberosity. Tuberosity avulsion fractures cause pain and tenderness at the base of the fifth metatarsal and follow forced inversion during plantar flexion of the foot and ankle.
Local bruising, swelling and other injuries may be present. Nondisplaced tuberosity fractures are usually treated conservatively, but orthopedic referral is indicated for fractures that are comminuted or displaced, fractures that involve more than 30 percent of the cubometatarsal articulation surface and fractures with delayed union.
The fifth metatarsal is a prime candidate for stress fracture because it is susceptible to a range of considerable dynamic forces, and the effects of any of these can be magnified by several common foot alignment deformities, such as flat feet.
These injuries often result from activities involving running and making sharp turns on firm surfaces. They generally take longer to heal in athletes, especially if the patient continues with activity, even to a moderate level.
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