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Chapter 41 Video 1: The Answer is Vitamin D! From Pediatrics to Geriatrics in Orthopaedics

January 05, 2018

Contributors: Barbara Minkowitz, MD

Vitamin D deficiency is found in all age groups. The increasing trend of deficiency is due to sun avoidance, more clothing, less play outdoors, and sunscreen use. 90% of production should be from sun exposure. The screening form is 25-OH vitamin D, while 1,25-OH vitamin D is the active form. Complaints with deficiency include aching, weakness, fatigue, joint and muscle pain, and weight gain. Vitamin D deficiency causes secondary hyperparathyroidism. The effects of supplementation on muscle strength in athletes is discussed. The prevalence of deficiency in children is discussed in relationship to the increase in forearm fractures over 30 years. Having a first fracture increases the risk for subsequent fractures. The significance of vitamin D deficiency in NFL players as it relates to performance, fractures, and contract renewal is discussed.

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