title: [Vitamin D levels in patients with hip fracture in Madrid].
abstract: BACKGROUND
  Vitamin D appears to be implicated in the loss of bone mass and its most severe complication is the hip fracture. A change is produced in the metabolism of vitamin D in elderly people although its study has received little attention in many countries.
  
  
  METHODS
  With the aim of evaluating vitamin D and its metabolites in the elderly people with hip fracture in our geographic environment (Madrid, Spain), 58 patients with hip fracture over the age of 70, and 39 subjects without a fracture or the similar age were studied. Both groups were evaluated during the season of minimum solar irradiation. The plasma concentrations of intact PTH and the serum concentrations of calcidiol and calcitriol were studied in all the patients.
  
  
  RESULTS
  The patients with hip fracture presented significantly lower concentrations of calcidiol (11.7 +/- 6.4 vs. 18.4 +/- 12.7 nmol/l) and calcitriol (60.1 +/- 24.7 vs. 76.1 +/- 25.0 pmol/l) than in elderly persons without fracture, with similar PTH values being observed in both groups (4.8 +/- 1.9 vs. 5.1 +/- 2.3 pmol/l).
  
  
  CONCLUSIONS
  Although Madrid, Spain is considered to be a geographical area of high solar irradiation, the elderly population studied presented a vitamin D deficiency which was found to be greater in those with hip fracture.
authors.affiliation: Servicio de Bioquímica Clínica, Universidad Autónoma de Madrid.
authors.forename: M E
authors.initials: ME
authors.lastname: Martínez
authors.forename: M T
authors.initials: MT
authors.lastname: del Campo
authors.forename: J A
authors.initials: JA
authors.lastname: García
authors.forename: M J
authors.initials: MJ
authors.lastname: Sánchez-Cabezudo
authors.forename: S
authors.initials: S
authors.lastname: Medina
authors.forename: E
authors.initials: E
authors.lastname: Garc-ia Cimbrelo
authors.forename: L
authors.initials: L
authors.lastname: Munuera
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006620:Hip Fractures / Q000097:blood*; D006801:Humans; D008297:Male; D013030:Spain; D014807:Vitamin D / Q000097:blood*
chemical_list: D014807:Vitamin D
vernacular_title: Concentraciones de vitamina D en pacientes con fractura de cadera en Madrid.