This thesis investigates the accuracy and precision of digital volume correlation measurements derived from micro-computed tomography imagery of interfaces in the upper extremity of clinical relevance, namely, the implant-cement-bone interface of glenoid implants used in total shoulder arthroplasties and the implant-bone interface of shoulder hemiarthroplasties. The works within derive relationships between measurement accuracy and precision and parameters of practical interest such as image quality and measurement spatial resolution. It also analyzes the effects of micro-computed tomography image artifact-inducing materials on the accuracy and precision of digital volume correlation-based measurements and the spatial relationship between distance between the artifacting material and the magnitude of change in accuracy and precision. Finally, it also contains an in-vitro model of the peripheral glenoid peg-cement-bone interface which is subsequently analyzed through digital volume correlation; the relationship between peg/bone region and strain magnitude is elucidated.
Keywords:
Glenoid implants; digital volume correlation; micro-computed tomography; humeral head implants; trabecular bone strains; implant-cement-bone interfaces