Micro-CT scan optimisation for mechanical loading of tibia with titanium tibial tray: A digital volume correlation zero strain error analysis

Wearne, Lauren S.; Rapagna, Sophie; Taylor, Mark A.; Perilli, Egon

doi:10.1016/j.jmbbm.2022.105336

Cited by 10 publications

(10 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dentoalveolar complex was scanned using the Nikon XT H 225 ST cabinet Micro‐CT scanning system (Nikon Metrology, 2021) at Flinders University (Clement et al, 2021; Wearne et al, 2022). The skull, the cranium without the mandible, and the mandible alone were scanned to investigate the achievable resolution of each specimen (Supplementary Table S2), as the spatial resolution (pixel/voxel size) selected for each scan was relative to the size of the specimen.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, it was important to investigate whether the positioning of the opposing maxillary and mandibular teeth within the skull, during the scanning process, could affect the analysis of the occlusal surfaces of these teeth. In choosing the scanning settings, the transmitted signal intensity and source power settings were considered according to guidelines (du Plessis et al, 2017; Wearne et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

“…The LV micro‐CT scanning system has been used in research for oral surgery (Beetge et al, 2018; Stan et al, 2019; Theye et al, 2018), biomedical (Grace et al, 2022; Kusins et al, 2019; Wearne et al, 2022) and medical research (Hutchinson et al, 2016; Kramer et al, 2019; Main et al, 2021; Smit et al, 2020; Tan et al, 2022; Welsh et al, 2020), paleontology (Clement et al, 2021), and forensic investigations (Alsop et al, 2022, Braun et al, 2022, Nikolova et al, 2019, Rutty et al, 2012). The non‐invasive nature of this type of micro‐CT scanner, as well as its technical capabilities, suggests that it could be of great value for the investigation of rare, delicate, and valuable archaeological human remains.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigating the dentoalveolar complex in archaeological human skull specimens: Additional findings with large volume micro‐CT compared to standard methods

Gurr

Higgins

Henneberg

et al. 2023

Intl J of Osteoarchaeology

View full text Add to dashboard Cite

Archaeological investigation of the dentoalveolar complex in situ within a human skull requires detailed measurements using non-invasive techniques. Standard macroscopic and radiographic methods have limitations but large volume micro-computed tomography (LV micro-CT) scanning has the potential to acquire data at high resolution in microns. In this study, archaeological specimens are analyzed using three-dimensional data visualization software from LV micro-CT scans with the aims of (1) determining whether LV micro-CT can act as a single technique to provide detailed analysis of the dentoalveolar complex and (2) how findings from the LV micro-CT technique compare with standard methods. These aims are explored by measuring a range of human skull specimens from a rare archaeological sample requiring non-invasive methods, for multiple dental and alveolar bone health categories. The LV micro-CT technique was the only method to provide a full range of detailed measurements across all categories studied. A combination of macroscopic and radiographic techniques covered a number of categories, but the use of multiple methods was more time consuming, did not provide the same level of accuracy, and did not include all measurements. There were high levels of reproducibility for intra-operator scoring and good inter-operator agreement from four operators with one operator whose results were outliers. As a further investigation of the potential of the LV micro-CT technique, an additional individual, a fragile, fragmented skull of an infant was studied. This investigation confirms the value of LV micro-CT scanning as a non-invasive, accurate, single technique for the extensive analysis of the dentoalveolar complex within archaeological skulls, which also allows the relationship of different tissues to be studied in situ.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigating the dentoalveolar complex in archaeological human skull specimens: Additional findings with large volume micro‐CT compared to standard methods

Gurr

Higgins

Henneberg

et al. 2023

Intl J of Osteoarchaeology

View full text Add to dashboard Cite

show abstract

“…Aseptic loosening of the humeral component, and intra- and post-operative bone fracture, are among the ten most common complications potentially leading to revision surgery [ 1 ]. In this context, large-volume micro-computed tomography (micro-CT) scanners enable visualization of the microstructure of entire bones [ 4 – 7 ], joints [ 8 ] and implants [ 7 ] under controlled loading, for advanced analyses of biomechanical failure of implantable devices.…”

Section: Introductionmentioning

confidence: 99%

Time-elapsed microstructural imaging of failure of the reverse shoulder implant

Martelli,

Perilli,

Fan

et al. 2024

J Orthop Surg Res

Self Cite

View full text Add to dashboard Cite

Background Reverse Shoulder Arthroplasties (RSA) have become a primary choice for improving shoulder function and pain. However, the biomechanical failure mechanism of the humeral component is still unclear. The present study reports a novel protocol for microstructural imaging of the entire humerus implant under load before and after fracture. Methods A humerus specimen was obtained from a 75-year-old male donor. An expert surgeon implanted the specimen with a commonly used RSA implant (Aequalis reversed II, Stryker Orthopaedics, USA) and surgical procedure. The physiological glenohumeral contact force that maximized the distal implant migration was selected from a public repository (orthoload.com). Imaging and concomitant mechanical testing were performed using a large-volume micro-CT scanner (Nikon XT H 225 ST) and a custom-made compressive stage. Both when intact and once implanted, the specimen was tested under a pre-load and by imposing a constant deformation causing a physiological reaction load (650 N, 10 degrees adducted). The deformation of the implanted specimen was then increased up to fracture, which was identified by a sudden drop of the reaction force, and the specimen was then re-scanned. Results The specimen’s stiffness decreased from 874 N/mm to 464 N/mm after implantation, producing movements of the bone-implant interface consistent with the implant’s long-term stability reported in the literature. The micro-CT images displayed fracture of the tuberosity, caused by a combined compression and circumferential tension, induced by the distal migration of the implant. Conclusion The developed protocol offers detailed information on implant mechanics under load relative to intact conditions and fracture, providing insights into the failure mechanics of RSA implants. This protocol can be used to inform future implant design and surgical technique improvements.

show abstract

“…Dental calculus—an indication of the number and percentage of teeth affected by calculus with the location and severity of the deposit for the adults of the St Mary’s Cemetery sample; Supplementary Table S10. Enamel Hypoplastic Defects _ St Mary Cemetery Sample [ 107 , 108 ].…”

mentioning

confidence: 99%

The Oral Health of a Group of 19th Century South Australian Settlers in Relation to Their General Health and Compared with That of Contemporaneous Samples

et al. 2023

View full text Add to dashboard Cite

The aims of this study are to determine the oral health status of a rare sample of 19th-century migrant settlers to South Australia, how oral conditions may have influenced their general health, and how the oral health of this group compares with contemporaneous samples in Australia, New Zealand, and Britain. Dentitions of 18 adults and 22 subadults were investigated using non-destructive methods (micro-CT, macroscopic, radiographic). Extensive carious lesions were identified in seventeen adults and four subadults, and from this group one subadult and sixteen adults had antemortem tooth loss. Sixteen adults showed evidence of periodontal disease. Enamel hypoplastic (EH) defects were identified in fourteen adults and nine subadults. Many individuals with dental defects also had skeletal signs of comorbidities. South Australian individuals had the same percentage of carious lesions as the British sample (53%), more than other historic Australian samples, but less than a contemporary New Zealand sample. Over 50% of individuals from all the historic cemeteries had EH defects, suggesting systemic health insults during dental development were common during the 19th century. The overall oral health of the South Australian settlers was poor but, in some categories, (tooth wear, periapical abscess, periodontal disease), better than the other historic samples.

show abstract

Micro-CT scan optimisation for mechanical loading of tibia with titanium tibial tray: A digital volume correlation zero strain error analysis

Cited by 10 publications

References 41 publications

Investigating the dentoalveolar complex in archaeological human skull specimens: Additional findings with large volume micro‐CT compared to standard methods

Investigating the dentoalveolar complex in archaeological human skull specimens: Additional findings with large volume micro‐CT compared to standard methods

Time-elapsed microstructural imaging of failure of the reverse shoulder implant

The Oral Health of a Group of 19th Century South Australian Settlers in Relation to Their General Health and Compared with That of Contemporaneous Samples

Contact Info

Product

Resources

About