Serum 25-hydroxy-calciferol level and failed back surgery syndrome

Area of Science:

• Orthopedics
• Neurology
• Endocrinology

Background:

• Failed back surgery syndrome (FBSS) is a challenging clinical condition characterized by persistent pain and functional disability.
• Vitamin D deficiency is prevalent in the general population and has been linked to various musculoskeletal pain conditions.

Purpose of the Study:

• To investigate the association between serum 25-hydroxy-calciferol (vitamin D) levels and pain/function in FBSS patients.
• To evaluate the efficacy of vitamin D supplementation as an adjuvant treatment for FBSS.

Main Methods:

• Retrospective review of 9 FBSS patients (6 men, 3 women; mean age 39.2 years) with moderate-to-severe pain and low back disability.
• All patients had vitamin D deficiency (serum 25-hydroxy-calciferol <30 ng/ml). Treatment involved initial vitamin D2 (20,000 IU/day for 10 days) followed by maintenance vitamin D3 (600 IU/day).
• Patients were assessed at 3 and 6 months post-supplementation. A control group of 7 matched individuals with good outcomes and normal vitamin D levels was used for comparison.

Main Results:

• FBSS patients had significantly low baseline vitamin D levels (mean 17.0 ng/ml), high pain scores (mean VAS 7.7), and poor function (mean JOA score 7.6).
• Following vitamin D supplementation, mean serum 25-hydroxy-calciferol levels significantly increased (17.0 to 42.5 ng/ml).
• Patients experienced significant improvements in pain (VAS 7.7 to 4.2) and function (JOA 7.6 to 11.1). Seven out of nine patients showed substantial improvement, with two patients with neurological deficits showing only slight improvement.

Conclusions:

• Vitamin D deficiency is associated with poor outcomes in patients with failed back surgery syndrome.
• Vitamin D supplementation demonstrated significant improvements in pain and low back function in FBSS patients.
• Vitamin D supplementation may serve as a valuable adjuvant therapy for managing failed back surgery syndrome.