Vitamin D and Post-Surgery Recovery
Vitamin D status affects surgical outcomes across specialties — wound healing, infection risk, ICU mortality, joint-replacement recovery. Studies consistently find deficient patients have modestly worse outcomes. Pre-operative correction is an increasingly accepted part of surgical optimisation.
Orthopaedic surgery
Total hip and knee arthroplasty patients with pre-op 25(OH)D deficiency have longer hospital stays, higher revision rates, more periprosthetic infections, and slower functional recovery in observational studies (Traven 2019). Some centres routinely check and correct 25(OH)D before elective joint replacement.
Surgical site infection
Cross-sectional and cohort data find higher post-operative infection rates in vitamin D-deficient patients across colorectal, cardiac, and general surgery. Correcting deficiency does not fully eliminate the risk but the evidence supports pre-op assessment.
ICU outcomes
Critically ill patients frequently have very low 25(OH)D (partly from acute-phase reduction in DBP). The VITdAL-ICU trial (2014) showed high-dose vitamin D reduced ICU mortality in the severely deficient subgroup (25(OH)D < 12 ng/mL) — a strong signal in one of the sickest patient populations.
Wound healing biology
Vitamin D modulates keratinocyte proliferation, fibroblast function, and antimicrobial peptide production at wound sites. Chronic wound patients (diabetic ulcers, pressure sores) frequently have low 25(OH)D; small trials suggest correction may accelerate healing alongside standard wound care.
Practical guide
- Elective major surgery: check 25(OH)D 3-4 weeks pre-op.
- Correct deficiency: 4,000-5,000 IU/day for 3-4 weeks, or 50,000 IU weekly for 3 weeks pre-op.
- Emergency surgery: consider IV or IM cholecalciferol for known deficient patients.
- ICU admission: vitamin D testing on admission; loading dose in severely deficient patients.
- Post-op continuation: 2,000 IU/day cholecalciferol.