Wooden-soled shoes or a cast should be given for this purpose. In rare cases in which stress fracture occurs with a cavus foot, plantar fascia release may be appropriate. Occurrence
Stress fractures can occur at many sites in the body; "march fracture" simply refers to a stress fracture specifically of the metatarsals, so named because the injury is sometimes sustained by soldiers during sustained periods of marching. Although march fractures can occur to the 5th metatarsal, fractures of this bone are more likely to be trauma-related fractures to the diaphysis, termed Jones fractures. In runners, march fracture occurs most often in the metatarsal neck, while in dancers it occurs in the proximal shaft. In ballet dancers, fracture mostly occurs at the base of the second metatarsal and at Lisfranc joints. This fracture always occurs following a prolonged stress or weight bearing, and the history of direct trauma is very rare. Consideration should always be given to osteoporosis and osteomalacia. Cavus feet are a risk factor for march fracture. References


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Molybdenum deficiency refers to the clinical consequences of inadequate supplies of molybdenum in the diet. The amount of molybdenum required is relatively small, and molybdenum deficiency usually does not occur in natural settings. However, it can occur in individuals receiving parenteral nutrition. Signs and symptoms
Descriptions of human molybdenum deficiency are few. A patient receiving prolonged parenteral nutrition acquired a syndrome described as ‘acquired molybdenum deficiency.’ This syndrome, exacerbated by methionine administration, was characterized by high blood methionine, low blood uric acid, and low urinary uric acid and sulfate concentrations. The patient suffered mental disturbances that progressed to a coma. Pathological changes occurring in individuals with a genetic disease that results in a sulfite oxidase (a molybdoenzyme) deficiency include increased plasma and urine sulfite, sulfate, thiosulfate, S-sulfocysteine and taurine; seizures, and brain atrophy/lesions; dislocated lenses; and death at an early age.. Diagnosis
Treatment
300 mcg Ammonium Molybdate per day can bring about recovery of “acquired molybdenum deficiency” [3]

See also
Molybdenum cofactor deficiency

References
Further reading


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