title: The level of vitamin D in the serum correlates with fatty degeneration of the muscles of the rotator cuff.
abstract: This study examined the role of vitamin D as a factor accounting for fatty degeneration and muscle function in the rotator cuff. There were 366 patients with disorders of the shoulder. A total of 228 patients had a full-thickness tear (group 1) and 138 patients had no tear (group 2). All underwent magnetic resonance arthrography and an isokinetic muscle performance test. The serum concentrations of vitamin D (25(OH)D(3)) were measured. In general, a lower serum level of vitamin D was related to higher fatty degeneration in the muscles of the cuff. Spearman's correlation coefficients were 0.173 (p = 0.001), -0.181 (p = 0.001), and -0.117 (p = 0.026) for supraspinatus, infraspinatus and subscapularis, respectively. In group 1, multivariate linear regression analysis revealed that the serum level of vitamin D was an independent variable for fatty degeneration of the supraspinatus and infraspinatus. The serum vitamin D level has a significant negative correlation with the fatty degeneration of the cuff muscle and a positive correlation with isokinetic muscle torque.
authors: Department of Orthopaedic Surgery, Seoul National University, College of Medicine, Seoul National University Bundang Hospital, Bundang-gu, Seongnam, Korea.
authors: J H
authors: JH
authors: Oh
authors: S H
authors: SH
authors: Kim
authors: J H
authors: JH
authors: Kim
authors: Y H
authors: YH
authors: Shin
authors: J P
authors: JP
authors: Yoon
authors: C H
authors: CH
authors: Oh
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism* / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000097:blood; D002112:Calcifediol / Q000097:blood; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D017006:Rotator Cuff / Q000000981:diagnostic imaging / Q000473:pathology; D000070636:Rotator Cuff Injuries; D012422:Rupture, Spontaneous; D014807:Vitamin D / Q000097:blood*; D055815:Young Adult
chemical_list: D015415:Biomarkers; D014807:Vitamin D; D002112:Calcifediol