Clin Orthop Surg.  2016 Jun;8(2):153-156. 10.4055/cios.2016.8.2.153.

Effect of Preoperative Vitamin D Levels on Functional Performance after Total Knee Arthroplasty

• Maniar RN
• Patil AM
• Maniar AR
• Gangaraju
• Singh J

• KMID: 2412339
• DOI: http://doi.org/10.4055/cios.2016.8.2.153

Abstract

BACKGROUND
Low vitamin D levels affects muscle function. Vitamin D and calcium deficiency cause osteomalacic myopathy and poor functional recovery after hip fractures. The relationship of vitamin D and functional performance after total knee arthroplasty (TKA) is not previously reported.
METHODS
Influence of vitamin D on functional performance before and after TKA was reviewed retrospectively in 120 patients. Of these, 64 had vitamin D deficiency (25-hydroxy vitamin D < 30 ng/mL) preoperatively. All 120 patients received vitamin D oral supplementation postoperatively. Functional parameters including Western Ontario and McMaster Osteoarthritis Index (WOMAC), Short-Form Health Survey questionnaire, and Knee Society Score were assessed pre- and postoperatively at 3 months.
RESULTS
Preoperative function was significantly lower in osteoarthritic patients with vitamin D deficiency (WOMAC score; p = 0.040), but at 3 months all functional scores were similar.
CONCLUSIONS
We concluded that vitamin D deficiency has a negative effect on function in knee osteoarthritic patients. However, postoperative vitamin D supplementation can lead to functional recovery in these patients. Thus, TKA should not be delayed in vitamin D deficient patients; rather supplementation in the postoperative period is preferable to achieve comparable functional outcome at 3 months to patients with vitamin D sufficiency.

Keyword

Vitamin D; Deficiency; Osteoarthritis; Knee replacement arthroplasty

MeSH Terms

Aged
Arthroplasty, Replacement, Knee/*statistics & numerical data
Female
Humans
Knee Joint/*physiology/surgery
Male
Range of Motion, Articular
Surveys and Questionnaires
Vitamin D/*blood
Vitamin D

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