Nailing of proximal ulna fractures: biomechanical comparison of a new locked nail with angular stable plating.
Biomechanical testing
Nailing
Proximal ulna fractures
Journal
European journal of trauma and emergency surgery : official publication of the European Trauma Society
ISSN: 1863-9941
Titre abrégé: Eur J Trauma Emerg Surg
Pays: Germany
ID NLM: 101313350
Informations de publication
Date de publication:
Jun 2021
Jun 2021
Historique:
received:
03
07
2019
accepted:
22
10
2019
pubmed:
5
11
2019
medline:
16
10
2021
entrez:
3
11
2019
Statut:
ppublish
Résumé
Proximal ulna fractures are common injuries and frequently treated with angular stable plating. This surgical option shows good functional results. Relevant drawbacks such as large soft tissue exposure, compromised blood supply of fracture fragments and disturbing osteosynthetic material are described. The aim of this study was to compare a new locked proximal ulna nail with angular stable plating in a biomechanical testing setup for extraarticular proximal ulna fractures. Ten pairs of sawbones with a Jupiter type IIB proximal ulna fracture (OTA 2U1A3.1) were tested after osteosynthesis with the mentioned implants in a servo-pneumatic testing machine. The testing setup simulates physiological joint motion (0°-90°) under cyclic loading (30-300 N). Primary stability and loosening of both constructs were quantified using micromotion video-analysis after 608 test cycles. The micromotion analysis showed significantly higher primary stability of the locked nail (0.29 ± 0.13 mm) compared to the angular stable plate (0.97 ± 0.30 mm, p < 0.001). Both implants showed a low amount of loosening after completion of the test cycles. The construct with the locked nail (0.08 ± 0.06 mm) showed significantly lower dislocation of the fragments measured at the anterior cortex (plate 0.24 ± 0.13 mm, p < 0.001). Nailing of proximal ulna fractures shows significantly higher primary stability and lower loosening compared to angular stable plating in our testing setup.
Identifiants
pubmed: 31677007
doi: 10.1007/s00068-019-01254-7
pii: 10.1007/s00068-019-01254-7
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
795-802Références
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