Lower extremity stres fractures are...

Lower extremity stres fractures are habitual injuries most often associated with participation in sports involving running, jumping, or repetitive stres The initial diagnosis can be made by the agency of identifying localized bone pain that increases with weight bearing or repetitive use. Plain film radiographs are not seldom unrevealing. Confirmation of a stres fracture is best made using triple phase nuclear medicine bone scan or magnetic resonance imaging. Prevention of stres fractures is principally effectively accomplished by increasing the of the same height of exercise slowly, adequately warming up and stretching before exercise, and using cushioned insoles and appropriate footwear. Treatment involves cessation of the injured bone, followed by dint of a gradual return to the sport one time free of pain. Recent evidence supports the use of air splinting to bring into pain and decrease the time until respond to full participation or intensity of exercise. (Am Fam Physician 2003;68:1527-32 Copyright[C] 2003 American Academy of Family Physicians)

Stres fractures are among the greatest in number common sports injuries and are not seldom managed by family physicians. A stres fracture should be suspected in any patient presenting with localized bone or periosteal pain, especially if he or she not long ago started an exercise program or increased the intensity of exercise. Other possible sources of bone pain, including metastatic lesions, should be considered.

Stres fractures can spring from participation in many activities and sports, especially those requiring running and jumping. Athletics, or track and field sports, account for 50 percent of stres fractures in men and 64 percent in women (1) Participation in a certain sports that are not considered to be high-impact, of that kind as platform diving and rowing (crew) also may cause stres fractures, particularly of the metatarsals and ribs. Hockey golf swimming, fencing, and softball have highly low reported incidences of stres fractures. (1)

This article reviews often met with stress fractures of the lower extremity, especially those involving the tibia, fibula, and metatarsal bone Stres fractures of the upper extremity may befall in sports involving repetitive use of the arms, like as baseball or tennis. Stres fractures of the ribs be found in sports such as rowing. Upper extremity and rib stres fractures are far les universal than lower extremity stress fractures. (1)

Etiology and Pathophysiology

Stres fractures of the lower extremity chiefly commonly involve the tibia and metatarsal bone (12) Stres fractures of the fibula, the navicula, the pelvis, and the femoral neck of the thigh-bone are less common. (1) Although several factors appear to contribute to the progression in a continuously ascending gradation of stress fractures (Table 1) (1-9) they generally come into view as a result of a repetitive use injury that surpasss the intrinsic ability of the bone to repair itself. (310)

brace competing, but not mutually exclusive, theories may explain the disentanglement of stress fractures. One theory grasps that during the initial increase in exercise activity, the osteoblastic activity lags behind osteoclastic activity through a few weeks, resulting in a period during which bone is more susceptible to injury. Torsional and bending stres forces from repetitive use flow in microfractures that consolidate into stres fractures. (2411) The other theory emphasizes sinewy and repetitive stress on bone at the insertion point of muscles, resulting in focal bending stresse beyond the ability of the bone to tolerate. (3410)

Stres fractures ofttimes occur in nonathletes or deconditioned individuals who begin a new exercise program, similar as military recruits. (2,3,4) Women are generally more likely to lay open stress fractures than men. In women nonathletes undertaking unusual activity are more likely to disentangle stress fractures than athletes, omit for those athletes who exercise to the point of amenorrhea. (1-3512) In the two men and women, stress fractures nurse to recur. Approximately 60 percent of bodys with a stress fracture have had a previous stres fracture. (13)

Tibial fractures are the mostly common lower extremity stress fracture, (13) accounting for approximately single half of All stress fractures in children and adults. (114) Stres fractures of the tibia are especially habitual in sports involving running and jumping. (23) In children, tibial stres fractures usually come to one's mind in the anterior proximal individual third of the bone, whereas in adults, the junction of the middle and distal single thirds seems to be the most numerous prevalent site. (14) Anterior stres fractures of the tibia usually outcome from tension stress and have a higher incidence of nonunion than anteromedial fractures.

Metatarsal fractures exhibit approximately 25 percent of stres fractures. (1) These fractures chiefly often involve the distal other and third metatarsals and are least everyday in the fifth metatarsal. (3) next to the first and third metatarsal fractures are general in military recruits marching for the first time in combat profits (hence the term "march fracture"), and in ballet dancers involved in dancing forward the tips of their toes (i.e., "en pointe"). (31516) Fifth metatarsal stres fractures are les everyday and must be distinguished from Jone fractures or avulsion fractures. (15) Fifth metatarsal fractures are more used by all in patients with varum stresse of the paw or knee (genu varum). The latter are more propense to nonunion. (15)