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| LETTER TO EDITOR |
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| Year : 2023 | Volume
: 6
| Issue : 1 | Page : 120 |
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Vitamin D deficiency in proximal femur fractures: An observational, cross-sectional study
Mahmood Dhahir Al-Mendalawi
Department of Paediatrics, Al-Kindy College of Medicine, University of Baghdad, Baghdad, Iraq
| Date of Submission | 18-Sep-2022 |
| Date of Decision | 02-Oct-2022 |
| Date of Acceptance | 02-Oct-2022 |
| Date of Web Publication | 27-Dec-2022 |
Correspondence Address:
Mahmood Dhahir Al-Mendalawi
P. O. Box 55302, Baghdad Post Office, Baghdad 55302
Iraq
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/jodp.jodp_81_22
How to cite this article:
Al-Mendalawi MD. Vitamin D deficiency in proximal femur fractures: An observational, cross-sectional study. J Orthop Dis Traumatol 2023;6:120 |
How to cite this URL:
Al-Mendalawi MD. Vitamin D deficiency in proximal femur fractures: An observational, cross-sectional study. J Orthop Dis Traumatol [serial online] 2023 [cited 2023 Jan 28];6:120. Available from: https://jodt.org/text.asp?2023/6/1/120/365296 |
Sir,
In SeptemberDecember 2022, issue of the Journal of Orthopedic Diseases and Traumatology, Singh et al.[1] evaluated the association between serum Vitamin D (VD) levels and proximal femur fractures among Indian patients. They found that 96% of patients suffered from hypovitaminosis D (VD levels <30 ng/ml) while 38% of the patients had VD deficiency (VD levels <20 ng/ml). However, no significant differences in VD levels were found when patients of different ages, gender, and altitude were compared with each other. Singh et al.[1] mentioned three study limitations, namely time constraints, small sample size, and the confounding effects of age, compliance, dietary history, and intersubject variability. We believe that the following limitation needs consideration. The diagnostic cutoff criteria according to the United States Endocrine Society Guidelines[2] are widely employed in assessing VD status. As several factors could control the cutoff values (CV) of serum VD levels, including age, gender, season, ethnicity, skin color, dietary habits, and sunlight exposure,[3] numerous populations-specific CV of serum VD levels have been formulated to be applied in research and clinical settings.[4],[5] In the study methodology, Singh et al.[1] did not obviously state which standard was used in the classification of VD status into normal, insufficiency, and deficiency. That methodological limitation might significantly impair the correctness of the study results.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
| References | |  |
| 1. | Singh U, Tiwari P, Singh N, Kalia G, Brar BS. Vitamin D deficiency in proximal femur fractures: An observational, cross-sectional study. J Orthop Dis Traumatol 2022;5:173-9.  [Full text] |
| 2. | Holick MF, Binkley NC, Bischoff-Ferrari HA, Gordon CM, Hanley DA, Heaney RP, et al. Evaluation, treatment, and prevention of vitamin D deficiency: An Endocrine Society clinical practice guideline. J Clin Endocrinol Metab 2011;96:1911-30. |
| 3. | Mithal A, Wahl DA, Bonjour JP, Burckhardt P, Dawson-Hughes B, Eisman JA, et al. Global vitamin D status and determinants of hypovitaminosis D. Osteoporos Int 2009;20:1807-20. |
| 4. | Hu Y, Li S, Liu Z, Yang X, Yang L. Exploring study on the cutoff of vitamin D deficiency in Chinese adults. Wei Sheng Yan Jiu 2020;49:699-704. |
| 5. | Bennouar S, Bachir Cherif A, Makrelouf M, Ait Abdelkader B, Taleb A, Abdi S. Reconsidering vitamin D optimal values based on parathyroid hormone levels in a North Algerian cohort: Stratification by gender and season. Arch Osteoporos 2022;17:100. |
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