Clinical Orthopaedics and Related Research®

, Volume 471, Issue 9, pp 3029–3035

Is There an Epidemic Vitamin D Deficiency in German Orthopaedic Patients?

  • Gerrit Steffen Maier
  • Philipp Jakobs
  • Klaus Edgar Roth
  • Andreas Alois Kurth
  • Uwe Maus
Clinical Research

DOI: 10.1007/s11999-013-2996-5

Cite this article as:
Maier, G.S., Jakobs, P., Roth, K.E. et al. Clin Orthop Relat Res (2013) 471: 3029. doi:10.1007/s11999-013-2996-5

Abstract

Background

Vitamin D plays an essential role in bone health and muscle function. Some studies have shown a widespread rate of vitamin D deficiency in the general population, but few have reported on the vitamin D status of orthopaedic patients.

Questions/purposes

We investigated (1) the extent of hypovitaminosis D in orthopaedic patients, (2) seasonal variations in vitamin D levels, and (3) possible risk factors for insufficient vitamin D levels.

Methods

Vitamin D levels in 1119 patients consecutively admitted to an orthopaedic surgery department in 2011 were measured. To investigate the correlation between climate factors and vitamin D levels, the sunshine hours for each month in 2011 were collected by Deutscher Wetterdienst (the German weather service) in the region where most tested patients lived. The prevalence of normal (> 30 ng/mL), insufficient (20–30 ng/mL), and deficient (< 20 ng/mL) 25-hydroxyvitamin D levels was determined. Univariate and multivariate analyses were used to assess risk factors for insufficient vitamin D levels.

Results

Overall, 84% of patients had insufficient levels of vitamin D and 60% were vitamin D deficient. Only 15% were in the target range of 30 to 60 ng/mL. The prevalence of low vitamin D levels was greater during winter and months with fewer sunshine hours. Vitamin D levels did not vary according to age, sex, and disease. Individuals with obesity, hypertension, and osteoporosis were more likely to have low vitamin D levels compared with their healthy counterparts.

Conclusions

There is an alarmingly high rate of hypovitaminosis D and vitamin D deficiency among orthopaedic patients in this region of Germany, whose latitude (50° N) is approximately the same as those of Vancouver (49°, 15’ N) and Paris (48°, 51’ N). Given the well-known effects on bone metabolism and muscle health, low vitamin D levels may negatively affect patients. Screening and treating hypovitaminosis D appears to be important in this patient population.

Level of Evidence

Level II, prognostic study. See the Guidelines for Authors for a complete description of levels of evidence.

Copyright information

© The Association of Bone and Joint Surgeons® 2013

Authors and Affiliations

  • Gerrit Steffen Maier
    • 1
    • 2
    • 3
  • Philipp Jakobs
    • 2
  • Klaus Edgar Roth
    • 2
  • Andreas Alois Kurth
    • 2
  • Uwe Maus
    • 4
  1. 1.Department of Trauma SurgeryJustus-Liebig-UniversityGiessenGermany
  2. 2.Department of Orthopaedic SurgeryJohannes-Guttenberg-UniversityMainzGermany
  3. 3.Klinik und Poliklinik für UnfallchirurgieUniversitätsklinikum GießenGießenGermany
  4. 4.Department for Orthopedic SurgeryPius-HospitalOldenburgGermany

Personalised recommendations