Low serum vitamin B levels are associated with degenerative rotator cuff tear.

Background: Vitamin B (Vit B) deficiency results in elevated homocysteine levels and interference with collagen cross-linking, which may affect tendon integrity. The purpose of this study was to investigate whether serum Vit B levels were correlated with degenerative rotator cuff (RC) tear.

Methods: Eighty-seven consecutive patients with or without degenerative RC tear were enrolled as study participants.