![]() Type II: nonweight-bearing immobilization vs. Type I: nonweight-bearing immobilization for six to eight weeks (may require up to 20 weeks) Stress fracture of the proximal metatarsal within 1.5 cm of tuberosity Types II, III: variable healing potential surgical fixation for active athletes or patients preferring surgical therapy Type I: nonweight-bearing immobilization for six to eight weeks Laterally directed force on forefoot with ankle in plantar flexion Although most fractures of the proximal portion of the fifth metatarsal respond well to appropriate management, delayed union, muscle atrophy and chronic pain may be long-term complications.Īcute fracture of the proximal metatarsal within 1.5 cm of tuberosity (Jones fracture) Proximal fifth metatarsal fractures are common injuries that can arise in the athletic as well as the non-athletic population. ![]() All displaced fractures and type III fractures should be managed surgically. Type II fractures may also be treated conservatively or may be managed surgically, depending on patient preference and other factors. Type I fractures are generally treated conservatively with a nonweight-bearing short leg cast for six to eight weeks. Management and prognosis of both acute (Jones fracture) and stress fracture of the fifth metatarsal within 1.5 cm of the tuberosity depend on the type of fracture, based on Torg's classification. 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 cubo-metatarsal articulation surface and fractures with delayed union. Rolling your foot and ankle toward the outside, called an inversion injury, is the most common cause of fifth metatarsal fractures (and also a common cause of ankle fractures. Diagnosis is made with plain radiographs of the foot. ![]() Local bruising, swelling and other injuries may be present. Fifth metatarsal fractures are generally the result of trauma to the foot, caused by either a direct blow or a rotational (twisting) injury. SUMMARY 5th Metatarsal Base Fractures are among the most common fractures of the foot and are predisposed to poor healing due to the limited blood supply to the specific areas of the 5th metatarsal base. 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. In an avulsion fracture, a small piece of bone is pulled off the main portion of the bone by a tendon. 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. What Is a Fifth Metatarsal Fracture Avulsion fracture. ![]()
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