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Single harvesting in the all-inside graft-link technique: is the graft length crucial for success? A biomechanical study
- Source :
- Journal of Orthopaedics and Traumatology : Official Journal of the Italian Society of Orthopaedics and Traumatology
- Publisher :
- Springer Nature
-
Abstract
- Background The all-inside graft-link technique for anterior cruciate ligament reconstruction is performed with two cortical suspension devices with adjustable loops on both femur and tibia. This technique requires meticulous graft preparation. The aim of this study was to biomechanically test three different graft configurations resulting from differences in initial graft length. Materials and methods Thirty bovine digital extensor tendons were arranged in three different ways: “half-quadrupled”, “tripled” and “quadrupled”. The final graft length was 65–75 mm. The specimens were fixed vertical to the loading axis of a tensile testing machine. After a static pre-conditioning of 50 N for 5 min, a load to failure test was performed and data regarding the ultimate failure load (UFL), the stiffness and mode of failure were recorded. Results The evaluation of UFL showed a significant differences between group means as determined by one-way analysis of variance (F = 21.92, p = 0.002). Post hoc comparisons showed a significantly better UFL of “tripled” (p = 0.007) and “quadrupled” preparations (p = 0.014) compared to the “half-quadrupled” configuration, with no significant differences between “tripled” and “quadrupled” grafts (p = 0.061). No significant differences were found when evaluating the stiffness between the groups. Failure occurred by tendon slippage across the suture in all specimens. Conclusion The “quadrupled” tendon achieved the best UFL, with even the “tripled” configuration having sufficient biomechanical characteristics to withstand the loads experienced during early rehabilitation. For this reason, with a total semitendinosus length of less than 260 mm it could be better to “triple” instead of “half-quadruple” it to achieve better performance of the graft.
- Subjects :
- medicine.medical_specialty
Anterior cruciate ligament reconstruction
acl
medicine.medical_treatment
medicine.disease_cause
biomechanics
Weight-bearing
Tendons
Tissue Culture Techniques
Weight-Bearing
03 medical and health sciences
0302 clinical medicine
Suture (anatomy)
Tensile Strength
Materials Testing
medicine
Ultimate failure
Animals
Femur
Orthopedics and Sports Medicine
Tibia
Orthodontics
030222 orthopedics
Anterior Cruciate Ligament Reconstruction
business.industry
Biomechanics
all-inside
030229 sport sciences
musculoskeletal system
Surgery
Tendon
medicine.anatomical_structure
graft
surgery
orthopedics and sports medicine
Original Article
Cattle
business
Subjects
Details
- Language :
- English
- ISSN :
- 15909921
- Volume :
- 18
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of Orthopaedics and Traumatology
- Accession number :
- edsair.doi.dedup.....ef476e75b9b42f3351b713b0758e89d6
- Full Text :
- https://doi.org/10.1007/s10195-016-0420-0