TY - JOUR
T1 - Carpal kinematic changes after scaphoid nonunion: an in vivo study with four-dimensional CT imaging
AU - de Roo, Marieke G. A.
AU - Dobbe, Johannes G. G.
AU - van der Horst, Chantal M. A. M.
AU - Streekstra, Geert J.
AU - Strackee, Simon D.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The aim was to evaluate if motion between the scaphoid bone fragments is related to the position of the fracture line and if a scaphoid nonunion results in the uncoupling of the proximal and distal carpal row during wrist motion. The influence of dorsal intercalated segment instability on interfragmentary motion was also analysed. In this study, 12 patients were included with unilateral scaphoid nonunion. Four-dimensional computerized tomography was used to analyse flexion–extension and radioulnar deviation motion of both wrists. We found that an increased instability of the scaphoid fragments is associated with the presence of dorsal intercalated segment instability and is not dependent on the position of the fracture line relative to the scaphoid apex. Additionally, a scaphoid nonunion results in an uncoupling of the carpal rows.
AB - The aim was to evaluate if motion between the scaphoid bone fragments is related to the position of the fracture line and if a scaphoid nonunion results in the uncoupling of the proximal and distal carpal row during wrist motion. The influence of dorsal intercalated segment instability on interfragmentary motion was also analysed. In this study, 12 patients were included with unilateral scaphoid nonunion. Four-dimensional computerized tomography was used to analyse flexion–extension and radioulnar deviation motion of both wrists. We found that an increased instability of the scaphoid fragments is associated with the presence of dorsal intercalated segment instability and is not dependent on the position of the fracture line relative to the scaphoid apex. Additionally, a scaphoid nonunion results in an uncoupling of the carpal rows.
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85071487390&origin=inward
UR - https://www.ncbi.nlm.nih.gov/pubmed/31409175
U2 - https://doi.org/10.1177/1753193419866598
DO - https://doi.org/10.1177/1753193419866598
M3 - Article
C2 - 31409175
SN - 1753-1934
VL - 44
SP - 1056
EP - 1064
JO - Journal of Hand Surgery: European Volume
JF - Journal of Hand Surgery: European Volume
IS - 10
ER -