The effect of forearm rotation on radiographic measurements of the wrist: an experimental study using radiostereometric analyses on cadavers.
Cadaver
Forearm
Radiography
Radiostereometric analysis
Wrist
Journal
European radiology experimental
ISSN: 2509-9280
Titre abrégé: Eur Radiol Exp
Pays: England
ID NLM: 101721752
Informations de publication
Date de publication:
02 04 2021
02 04 2021
Historique:
received:
04
12
2020
accepted:
10
02
2021
entrez:
2
4
2021
pubmed:
3
4
2021
medline:
3
2
2022
Statut:
epublish
Résumé
Although dorsal/palmar tilt, radial inclination (RI), and ulnar variance (UV) are measurements commonly performed in wrist radiographs, the impact of forearm rotation on those measurements during the radiographic procedure is uncertain. Our aim was to determine the impact of supination and pronation on the reliability of measurements of tilt, RI, and UV. Tantalum markers were inserted into the distal radius of 21 unfractured cadaver forearms. The forearms were radiographed in different degrees of supination and pronation. The exact degree of rotation was calculated with radiostereometric analyses. Tilt, RI, and UV were measured by two independent readers in a random and anonymised fashion. Association between forearm rotation and radiographic measurements was examined using linear regression. Forearm rotation significantly impacted the radiographically measured tilt. One degree of supination and pronation respectively increased and decreased palmar tilt with 0.68° and 0.44°, observers 1 and 2, respectively. As opposed to observer 1, observer 2 found that RI was significantly impacted by rotation with a slope of 0.08. Ulnar variance was not significantly impacted by rotation with linear regression slopes of 0.01° (95% confidence interval [CI] - 0.02-0.05, p = 0.490) and 0.02° (95% CI - 0.02-0.07; p = 0.288), observer 1 and observer 2, respectively. In unfractured forearms, the radiographically measured tilt was significantly affected by rotation. Palmar tilt increased with supination and decreased with pronation. Rotation significantly affected radial inclination, although of a magnitude that is probably not clinically relevant. No significant impact on UV was found.
Sections du résumé
BACKGROUND
Although dorsal/palmar tilt, radial inclination (RI), and ulnar variance (UV) are measurements commonly performed in wrist radiographs, the impact of forearm rotation on those measurements during the radiographic procedure is uncertain. Our aim was to determine the impact of supination and pronation on the reliability of measurements of tilt, RI, and UV.
METHODS
Tantalum markers were inserted into the distal radius of 21 unfractured cadaver forearms. The forearms were radiographed in different degrees of supination and pronation. The exact degree of rotation was calculated with radiostereometric analyses. Tilt, RI, and UV were measured by two independent readers in a random and anonymised fashion. Association between forearm rotation and radiographic measurements was examined using linear regression.
RESULTS
Forearm rotation significantly impacted the radiographically measured tilt. One degree of supination and pronation respectively increased and decreased palmar tilt with 0.68° and 0.44°, observers 1 and 2, respectively. As opposed to observer 1, observer 2 found that RI was significantly impacted by rotation with a slope of 0.08. Ulnar variance was not significantly impacted by rotation with linear regression slopes of 0.01° (95% confidence interval [CI] - 0.02-0.05, p = 0.490) and 0.02° (95% CI - 0.02-0.07; p = 0.288), observer 1 and observer 2, respectively.
CONCLUSION
In unfractured forearms, the radiographically measured tilt was significantly affected by rotation. Palmar tilt increased with supination and decreased with pronation. Rotation significantly affected radial inclination, although of a magnitude that is probably not clinically relevant. No significant impact on UV was found.
Identifiants
pubmed: 33796970
doi: 10.1186/s41747-021-00209-1
pii: 10.1186/s41747-021-00209-1
pmc: PMC8017069
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
15Références
Hand (N Y). 2015 Dec;10(4):621-38
pubmed: 26568715
J Hand Surg Am. 2005 Nov;30(6):1178-84
pubmed: 16344175
Acta Orthop. 2005 Aug;76(4):563-72
pubmed: 16195075
Arch Orthop Trauma Surg. 2005 Jul;125(6):399-404
pubmed: 15891921
Acta Orthop Scand Suppl. 1989;232:1-51
pubmed: 2686344
Hand Surg. 2005 Jul;10(1):17-22
pubmed: 16106496
J Hand Surg Eur Vol. 2009 Apr;34(2):166-72
pubmed: 19129357
J Hand Surg Am. 1982 May;7(3):298-305
pubmed: 7086100
Optom Vis Sci. 2015 Mar;92(3):e71-80
pubmed: 25650900
Indian J Plast Surg. 2011 May;44(2):186-96
pubmed: 22022028
Acta Orthop. 2009 Feb;80(1):124-30
pubmed: 19234894
J Hand Surg Am. 2001 Nov;26(6):1042-6
pubmed: 11721248
Radiology. 2001 Sep;220(3):594-600
pubmed: 11526254
Stat Methods Med Res. 1999 Jun;8(2):135-60
pubmed: 10501650
Clin Biomech (Bristol, Avon). 1999 Jun;14(5):315-20
pubmed: 10521608
J Hand Surg Am. 1982 Jul;7(4):376-9
pubmed: 7119397
Acta Orthop. 2017 Jun;88(3):320-325
pubmed: 28464752
Orthop Clin North Am. 2018 Apr;49(2):211-222
pubmed: 29499822
J Hand Surg Am. 1997 Mar;22(2):258-62
pubmed: 9195423
Radiology. 1997 Dec;205(3):865-9
pubmed: 9393549
J Hand Surg Eur Vol. 2019 Jun;44(5):517-523
pubmed: 30176749
J Hand Surg Br. 1986 Jun;11(2):255-7
pubmed: 3734571
BMC Med Imaging. 2016 Jul 22;16(1):44
pubmed: 27443373
J Hand Surg Am. 1991 May;16(3):399-400
pubmed: 1861017
Skeletal Radiol. 1993;22(4):243-6
pubmed: 8316865