Biomechanical testing of a β-tricalcium phosphate wedge for advancement of the tibial tuberosity
| Autor: | Sébastien Etchepareborde, Marc Balligand, L. Brunel, Stéphanie Claeys, Nicolas Barthelemy |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Calcium Phosphates
medicine.medical_specialty business.product_category 040301 veterinary sciences chemistry.chemical_element Tibial tuberosity Biocompatible Materials Biomechanical testing 0403 veterinary science Weight-Bearing 03 medical and health sciences 0302 clinical medicine Tibial tuberosity advancement Dogs Materials Testing medicine Cadaver Animals Anterior Cruciate Ligament Porosity β tricalcium phosphate General Veterinary Tibia business.industry 04 agricultural and veterinary sciences Wedge (mechanical device) Surgery Biomechanical Phenomena chemistry 030220 oncology & carcinogenesis Animal Science and Zoology Implant business Biomedical engineering Titanium |
| Zdroj: | Veterinary and comparative orthopaedics and traumatology : V.C.O.T. 27(1) |
| ISSN: | 2567-6911 |
| Popis: | SummaryObjectives: to evaluate in vitro the strength of different compositions of beta-tricalcium phosphate (β-TCP) wedges in comparison with titanium foam and cages. To study the response to cyclic loading of the strongest β-TCP wedge, titanium foam and titanium cage.Methods: Compression test: Twenty-five tibiae were prepared for tibial tuberosity advancement using the modified Maquet technique. Five groups were defined depending on the material used to maintain the tibial tuberosity: Group 1 = titanium cage; Group 2 = wedges of porous titanium foam with 50% porosity (OrthoFoam®); Group 3 = blocks of biphasic synthetic bone (60% hydroxyapatite [HAP] and 40% _-TCP, porosity 80%); Group 4 = blocks of biphasic synthetic bone (60% HAP and 40% _-TCP, porosity 70%) and Group 5 = blocks of biphasic synthetic bone (65% HAP and 35% _-TCP, porosity 60%). Loads to failure were calculated for each implant. Cyclic study: Five additional tibiaes of group 1, 2 and 5 were fatigue tested from 100 to 500 N at a rate of 4 Hz for 200,000 cycles or until failure.Results: Compression test: For the five groups, the mean load at failure was 1895 N, 1917 N, 178 N, 562 N and 1370 N respectively. Cyclical study: All samples in the three groups tested withstood 200,000 cycles without failure.Clinical significance: The ideal implant to maintain tibial tuberosity advancement after the modified Maquet technique would be absorbable and allow osteoconduction and osteoinduction. As such, β-TCP wedges have many advantages and our study shows that they can withstand loads in the patellar tendon up to 500 N over 200,000 cycles in vitro and deserve more investigation. |
| Databáze: | OpenAIRE |
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