Regional differences in the three-dimensional bone microstructure of the radial head: implications for observed fracture patterns.
Elbow
Fracture
Micro-CT
Radial head
Trabeculae
Journal
Archives of orthopaedic and trauma surgery
ISSN: 1434-3916
Titre abrégé: Arch Orthop Trauma Surg
Pays: Germany
ID NLM: 9011043
Informations de publication
Date de publication:
Jan 2022
Jan 2022
Historique:
received:
23
02
2020
accepted:
15
10
2020
pubmed:
11
11
2020
medline:
8
1
2022
entrez:
10
11
2020
Statut:
ppublish
Résumé
A characterization of the internal bone microstructure of the radial head could provide a better understanding of commonly occurring fracture patterns frequently involving the (antero)lateral quadrant, for which a clear explanation is still lacking. The aim of this study is to describe the radial head bone microstructure using micro-computed tomography (micro-CT) and to relate it to gross morphology, function and possible fracture patterns. Dry cadaveric human radii were scanned by micro-CT (17 μm/pixel, isotropic). The trabecular bone microstructure was quantified on axial image stacks in four quadrants: the anterolateral (AL), posterolateral (PL), posteromedial (PM) and anteromedial (AM) quadrant. The AL and PL quadrants displayed the significantly lowest bone volume fraction and trabecular number (BV/TV range 12.3-25.1%, Tb.N range 0.73-1.16 mm Our microstructural results suggest that the lateral side is the "weaker side", exhibiting lower bone volume faction, less trabeculae and higher trabecular separation, compared to the medial side. As the forearm is pronated during most falls, the underlying bone microstructure could explain commonly observed fracture patterns of the radial head, particularly more often involving the AL quadrant. If screw fixation in radial head fractures is considered, surgeons should take advantage of the "stronger" bone microstructure of the medial side of the radial head, should the fracture line allow this.
Identifiants
pubmed: 33170354
doi: 10.1007/s00402-020-03665-3
pii: 10.1007/s00402-020-03665-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
165-174Subventions
Organisme : International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine
ID : -
Organisme : International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine
Informations de copyright
© 2020. Springer-Verlag GmbH Germany, part of Springer Nature.
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