Arthrex Total Shoulder Arthroplasty (TSA) IOT Practice Test

Which statement is true when comparing the standard glenoid components with the vault lock?

The ROC are different for the VL when compared to the standard glenoid

The statement regarding the comparison between standard glenoid components and the vault lock that is accurate concerns the differences in the radius of curvature (ROC). In the case of the vault lock, it is designed with a specific anatomical consideration that differs from the standard glenoid components, providing unique benefits in terms of articulation and fitting. This difference is essential because it directly impacts how the components work together, promoting a more favorable outcome for shoulder function and stability after total shoulder arthroplasty.

The other statements do not hold true in the same way. For instance, while radio markers can be found in various components, the specifics about their location and application might differ between standard glenoid and vault lock components. Furthermore, the trial components are not the same for both types; each has been specially designed to align with its respective system and functionality. These distinctions play a crucial role in the surgical process and the overall effectiveness of the implant.

Both standard glenoid and VL have a radio marker located in the central peg

Trial components for the standard glenoid and VL are the same

All of the above