Abstract
This study investigates, through finite-element analysis, different plate-screw fixation systems used for medial opening proximal tibial osteotomies (locking or non-locking with or without a medial spacer). Sulzer stainless steel non-locking without spacer, Synthes titanium locking without spacer, Smith and Nephew custom titanium locking with a wedge spacer and Arthrex stainless steel non-locking with a wedge spacer fixation systems were modelled and compared. All fixation systems were tested under static loading of 889 N applied evenly over the proximal tibia particular surface. The areas of highest stress experienced in the bone and the plate/screw interface were analysed. Tendency of the osteotomy wedge to close under loading for each fixation system was analysed. The numerical results suggest the titanium locking plate with wedge spacer block outperforms the others by achieving lower stresses (incurred by the fixation system and bone) and loss of correction. Locking screw mechanisms and wedge spacer blocks appear advantageous.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 154-168 |
| Number of pages | 15 |
| Journal | International Journal of Biomedical Engineering and Technology |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 2015 |
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Keywords
- Osteotomy
- finite element analysis
- orthopaedics
- osteoarthritis
- tibia.
ASJC Scopus subject areas
- Biomedical Engineering
Cite this
Finite element analysis of plate-screw systems used in medial opening wedge proximal tibial osteotomies. / Kimsal, Julie; Mercer, Deana; Schenck, Robert; DeCoster, Thomas; Bozorgnia, Shahram; Fitzpatrick, Jennifer; Mlady, Gary; Lerma, Jesus; Khraishi, Tariq.
In: International Journal of Biomedical Engineering and Technology, Vol. 19, No. 2, 01.01.2015, p. 154-168.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Finite element analysis of plate-screw systems used in medial opening wedge proximal tibial osteotomies
AU - Kimsal, Julie
AU - Mercer, Deana
AU - Schenck, Robert
AU - DeCoster, Thomas
AU - Bozorgnia, Shahram
AU - Fitzpatrick, Jennifer
AU - Mlady, Gary
AU - Lerma, Jesus
AU - Khraishi, Tariq
PY - 2015/1/1
Y1 - 2015/1/1
N2 - This study investigates, through finite-element analysis, different plate-screw fixation systems used for medial opening proximal tibial osteotomies (locking or non-locking with or without a medial spacer). Sulzer stainless steel non-locking without spacer, Synthes titanium locking without spacer, Smith and Nephew custom titanium locking with a wedge spacer and Arthrex stainless steel non-locking with a wedge spacer fixation systems were modelled and compared. All fixation systems were tested under static loading of 889 N applied evenly over the proximal tibia particular surface. The areas of highest stress experienced in the bone and the plate/screw interface were analysed. Tendency of the osteotomy wedge to close under loading for each fixation system was analysed. The numerical results suggest the titanium locking plate with wedge spacer block outperforms the others by achieving lower stresses (incurred by the fixation system and bone) and loss of correction. Locking screw mechanisms and wedge spacer blocks appear advantageous.
AB - This study investigates, through finite-element analysis, different plate-screw fixation systems used for medial opening proximal tibial osteotomies (locking or non-locking with or without a medial spacer). Sulzer stainless steel non-locking without spacer, Synthes titanium locking without spacer, Smith and Nephew custom titanium locking with a wedge spacer and Arthrex stainless steel non-locking with a wedge spacer fixation systems were modelled and compared. All fixation systems were tested under static loading of 889 N applied evenly over the proximal tibia particular surface. The areas of highest stress experienced in the bone and the plate/screw interface were analysed. Tendency of the osteotomy wedge to close under loading for each fixation system was analysed. The numerical results suggest the titanium locking plate with wedge spacer block outperforms the others by achieving lower stresses (incurred by the fixation system and bone) and loss of correction. Locking screw mechanisms and wedge spacer blocks appear advantageous.
KW - Osteotomy
KW - finite element analysis
KW - orthopaedics
KW - osteoarthritis
KW - tibia.
UR - http://www.scopus.com/inward/record.url?scp=84964603399&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964603399&partnerID=8YFLogxK
U2 - 10.1504/IJBET.2015.072934
DO - 10.1504/IJBET.2015.072934
M3 - Article
VL - 19
SP - 154
EP - 168
JO - International Journal of Biomedical Engineering and Technology
JF - International Journal of Biomedical Engineering and Technology
SN - 1752-6418
IS - 2
ER -