Donley Townsend

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PURPOSE To determine the complications observed with using porous spherical orbital implants (hydroxyapatite and porous polyethylene) and the factors leading to their occurrence. METHODS A total of 101 cases of porous spherical orbital implantation by five ophthalmic surgeons were reviewed retrospectively. The demographic data, diagnosis, prior surgery,(More)
Previous recommendations for adolescents have stated that sexually immature athletes may have a higher potential for injury when competing with their more sexually mature peers. However, studies document a higher injury rate among adolescent athletes with increasing age. This study was designed to see whether a relationship exists between sexual maturity(More)
The rate of aqueous formation was measured with fluorophotometry in a group of 113 normal human subjects who ranged in age from 20 to 83 years. A slight decrease in the rate of aqueous humor formation with aging was detected, but the rate was remarkably stable. The rate of aqueous humor formation was more stable than intraocular pressure or anterior chamber(More)
Neonatal hip dysplasia remains a difficult condition to diagnose and treat. Early periodic infant hip examination is the primary screening tool, but subtle hip instabilities can go undetected until fixed dislocations are discovered when the child begins to walk. Early nonoperative intervention in the neonatal period is usually effective using a Pavlik-type(More)
Health care executives are faced with a welter of priorities when it comes to allocating their increasingly scarce capital: they need to build information systems, organize primary care physicians, and expand outpatient services. But what are the defining issues? We asked five executives to explain how their strategies are changing as a result of managed(More)
Hidradenoma papilliferum is derived from apocrine sweat glands and was originally described as a tumor located in the anogenital area. The authors recently examined a 78-year-old man with a hidradenoma papilliferum at the margin of the upper eyelid. While the tumor was located in the dermis, serial sections showed a connection to the epidermis and(More)
Approximately 75 percent of all fractures sustained by children occur in the upper extremities and frequently occur during a fall onto an outstretched hand. The majority of these injuries involve the wrist and forearm, but the elbow alone accounts for approximately 10 percent of all fractures in children. Elbow fractures in children are challenging because(More)