title: Vitamin d is related to gait recovery after total hip arthroplasty: A prospective analysis.
abstract: To investigate the association between baseline serum levels of 25-hydroxyvitamin D (25(OH)D) and gait pattern in patients undergoing total hip arthroplasty (THA).
  
  
  
  Prospective study of patients with hip osteoarthritis undergoing primary THA between January 2012 and December 2013. Blood samples were collected on the day of hospital admission. Gait analyses were performed before surgery and 3 months postoperatively. Internal moments were captured.
  
  
  
  Major improvements were observed in gait data after THA. 25(OH)D levels correlated with change in peak extension (R=0.25, p=0.017) and peak power generation (R=0.25, p=0.04). Multiple linear regression analyses were performed. In model 1, 25(OH)D and change in gait speed explained the variability of peak extension (R2=0.1, p=0.004). In model 2, only 25(OH)D explained the variability of peak power generation (R2=0.05, p=0.044).
  
  
  
  25(OH)D levels were correlated with change in peak extension and peak power generation. The effect of 25(OH)D on change in gait variables after THA is modest.
authors: Hospital Sarah-Brasília, Sarah Network of Rehabilitation Hospitals, SMHS 301 bloco A, Zip code: 70335-901, Brasília, DF, Brazil. Electronic address: bmcunha@sarah.br.
authors: Bernardo Matos
authors: BM
authors: da Cunha
authors: Hospital Sarah-Brasília, Sarah Network of Rehabilitation Hospitals, SMHS 301 bloco A, Zip code: 70335-901, Brasília, DF, Brazil. Electronic address: dalfito@bol.com.br.
authors: Aline Dalfito
authors: AD
authors: Gava
authors: Hospital Sarah-Brasília, Sarah Network of Rehabilitation Hospitals, SMHS 301 bloco A, Zip code: 70335-901, Brasília, DF, Brazil. Electronic address: sndr@terra.com.br.
authors: Sandro Barbosa
authors: SB
authors: de Oliveira
authors: School of Physical Education, University of Brasília, Reitoria Campus Universitário Darcy Ribeiro Gleba A, Zip code 70910-900, Brasília, DF, Brazil. Electronic address: acdavid@unb.br.
authors: Ana Cristina
authors: AC
authors: de David
authors: School of Medicine, University of Brasília Reitoria Campus Universitário Darcy Ribeiro Gleba A, Zip code 70910-900, Brasília, DF, Brazil. Electronic address: leopoldo.luiz@uol.com.br.
authors: Leopoldo Luiz
authors: LL
authors: Dos Santos-Neto
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D001696:Biomechanical Phenomena; D005260:Female; D005684:Gait; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011184:Postoperative Period; D011446:Prospective Studies; D020127:Recovery of Function; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D
keywords: Gait analysis; Total hip replacement; Vitamin D