title: Reproducibility of standing posture for X-ray radiography: a feasibility study of the BalancAid with healthy young subjects.
abstract: Unreliable spinal X-ray radiography measurement due to standing postural variability can be minimized by using positional supports. In this study, we introduce a balancing device, named BalancAid, to position the patients in a reproducible position during spinal X-ray radiography. This study aimed to investigate the performance of healthy young subjects' standing posture on the BalancAid compared to standing on the ground mimicking the standard X-rays posture in producing a reproducible posture for the spinal X-ray radiography. A study on the posture reproducibility measurement was performed by taking photographs of 20 healthy young subjects with good balance control standing on the BalancAid and the ground repeatedly within two consecutive days. We analyzed nine posterior-anterior (PA) and three lateral (LA) angles between lines through body marks placed in the positions of T3, T7, T12, L4 of the spine to confirm any translocations and movements between the first and second day measurements. No body marks repositioning was performed to avoid any error. Lin's CCC test on all angles comparing both standing postures demonstrated that seven out of nine angles in PA view, and two out of three angles in LA view gave better reproducibility for standing on the BalancAid compared to standing on the ground. The PA angles concordance is on average better than that of the LA angles.
authors.affiliation: Department of BioMedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713AV Groningen, The Netherlands.
authors.forename: Dyah Ekashanti Octorina
authors.initials: DE
authors.lastname: Dewi
authors.forename: Albert G
authors.initials: AG
authors.lastname: Veldhuizen
authors.forename: Johannes G M
authors.initials: JG
authors.lastname: Burgerhof
authors.forename: I Ketut Eddy
authors.initials: IK
authors.lastname: Purnama
authors.forename: Peter M A
authors.initials: PM
authors.lastname: van Ooijen
authors.forename: Michael H F
authors.initials: MH
authors.lastname: Wilkinson
authors.forename: Tati Latifah Erawati Rajab
authors.initials: TL
authors.lastname: Mengko
authors.forename: Gijsbertus Jacob
authors.initials: GJ
authors.lastname: Verkerke
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D009068:Movement / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D015203:Reproducibility of Results; D013131:Spine / Q000000981:diagnostic imaging / Q000502:physiology*; D014056:Tomography, X-Ray / Q000379:methods*
references.citation: Spine (Phila Pa 1976). 1994 Jan 15;19(2):236-48
references.pmid: 8153835
references.citation: J Bone Joint Surg Am. 1982 Apr;64(4):489-93
references.pmid: 7068691
references.citation: Eur Spine J. 2009 Jan;18(1):38-44
references.pmid: 19066989
references.citation: Spine (Phila Pa 1976). 2009 Apr 15;34(8):792-7
references.pmid: 19365246
references.citation: Acta Orthop Belg. 1992;58(2):126-35
references.pmid: 1632212
references.citation: Z Orthop Ihre Grenzgeb. 1984 May-Jun;122(3):243-54
references.pmid: 6475210
references.citation: Radiologe. 1995 Jan;35(1):60-6
references.pmid: 7892441
references.citation: Med Instrum. 1978 Jan-Feb;12(1):59-63
references.pmid: 634192
references.citation: Spine (Phila Pa 1976). 2005 Feb 15;30(4):427-33
references.pmid: 15706340
references.citation: Spine (Phila Pa 1976). 2009 Apr 15;34(8):808-12
references.pmid: 19365249
references.citation: Biometrics. 1989 Mar;45(1):255-68
references.pmid: 2720055
references.citation: J Pediatr Orthop B. 2006 May;15(3):168-71
references.pmid: 16601583
references.citation: Spine (Phila Pa 1976). 2009 Apr 20;34(9):949-54
references.pmid: 19532003
references.citation: Clin Symp. 1978;30(1):1-30
references.pmid: 754890
references.citation: Spine (Phila Pa 1976). 1993 Sep 15;18(12):1581-3
references.pmid: 8235834
references.citation: Skeletal Radiol. 1994 Jan;23(1):43-8
references.pmid: 8160036
references.citation: Z Orthop Ihre Grenzgeb. 1984 Mar-Apr;122(2):150-1
references.pmid: 6720037
references.citation: Ann Phys Med. 1967 Aug;9(3):103-10
references.pmid: 6037346
references.citation: J Pediatr Orthop. 1982 Oct;2(4):378-82
references.pmid: 7142387
references.citation: J Spinal Disord. 1989 Sep;2(3):184-9
references.pmid: 2520074
references.citation: J Bone Joint Surg Am. 2005 Feb;87(2):260-7
references.pmid: 15687145
references.citation: Spine (Phila Pa 1976). 2000 Aug 15;25(16):2052-63
references.pmid: 10954636
references.citation: Ann Chir. 1996;50(8):631-6
references.pmid: 9035436
references.citation: Spine (Phila Pa 1976). 2004 Oct 15;29(20):2284-9
references.pmid: 15480143
references.citation: Skeletal Radiol. 1994 Oct;23(7):517-20
references.pmid: 7824978
references.citation: Spine (Phila Pa 1976). 2002 Sep 1;27(17):1911-7
references.pmid: 12221357