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Estrogen concentration in feces was investigated in five different herbivorous species of zoo animals. Using a nonspecific estrogen radioimmunoassay, in four species (red buffalo, yak, Grevy's zebra, and Nubian ibex) pregnancy was revealed by measuring estrogen concentration in feces. In hippopotamus, the levels of fecal estrogens were not different between pregnant and nonpregnant animals.

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BACKGROUNDSimultaneous bilateral femoral neck fractures are relatively rare injuries. They are usually associated with underlying metabolic bone disorders or systemic diseases. Long-term use of narcotics and bisphosphonates can also result in similar fracture patterns; however, association of this fracture type with long-term use of antiepileptic drugs is not very common. Only one such case has been reported in the literature. This article describes the second.CASE REPORTWe report a case of simultaneous displaced bilateral femoral neck fractures in a 50-year-old epileptic patient, who had taken phenytoin for the past 3 years. The fractures were a result of low-velocity injury following a fall from the bed. The fractures were managed with a bilateral hemi-replacement arthroplasty. Oral bisphosphonates were given to improve the bone quality in the post-operative period. The patient had a good post-operative outcome, that was sustained throughout the entire follow-up period of 1 year.CONCLUSIONAntiepileptic drugs should be supplemented with bisphosphonates and vitamin D to improve bone quality and prevent fractures in epileptic patients.

PAD is prevalent in the Arabian Gulf and is more likely to be associated with old age, females, ethnicity, smokers and those with diabetes mellitus.