Ex vivo biomechanical comparison of four Center of Rotation Angulation Based Leveling Osteotomy fixation methods
Objective To compare the strength of four constructs used to secure an osteotomy in a Center of Rotation Angulation (CORA)‐Based Leveling Osteotomy (CBLO) in an ex vivo model. Study design Ex vivo study. Sample population Thirty‐two canine tibiae from 17 skeletally mature cadavers weighing between 1...
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Published in | Veterinary surgery Vol. 51; no. 1; pp. 157 - 162 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Hoboken, USA
John Wiley & Sons, Inc
01.01.2022
Blackwell Publishing Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Objective
To compare the strength of four constructs used to secure an osteotomy in a Center of Rotation Angulation (CORA)‐Based Leveling Osteotomy (CBLO) in an ex vivo model.
Study design
Ex vivo study.
Sample population
Thirty‐two canine tibiae from 17 skeletally mature cadavers weighing between 18 and 33.2 kg.
Methods
Thirty‐two paired tibiae with patella and patellar tendon were collected. Each tibia was randomly allocated to a construct group: plate and pin (Plate), plate with countersink compression screw (HCS), plate with tension band (TB), or plate with HCS and TB (HCSTB). Samples were loaded by distraction until failure. The stiffness, yield load, and ultimate load were compared between each fixation method.
Results
No difference in stiffness of the constructs was detected between groups (p = .6937). Yield load for the HCSTB group (1211.06 N) was greater than the TB group (1016.41 N), the HCS group (907.20 N), and the Plate group (787.73 N) (p = .0069). The ultimate load for the HCSTB group (1387.82 N) was greater than the TB group (1076.36 N), HCS group (926.62 N), and the Plate group (774.35 N) (p = .0004).
Conclusions
CBLO fixation augmented with a TB and HCS provided a stronger construct that withstood a greater yield load and ultimate load than either augmentation strategy alone.
Clinical significance
Augmenting a CBLO fixation with a TB and a HCS can provide increased construct strength. |
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Bibliography: | Funding information Mississippi State University College of Veterinary Medicine House Officer Research Grant ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0161-3499 1532-950X |
DOI: | 10.1111/vsu.13696 |