Which statement about glenoid tilt and loosening is accurate?

• A. Superior tilt of the glenoid component is associated with loosening.
• B. Tilt has no effect.
• C. Superior tilt improves fixation.
• D. Tilt only affects cosmetic appearance.

Answer: (C)

Glenoid tilt changes how shoulder forces are transmitted through the implant-bone interface, so the direction of tilt alters the balance between shear and compressive loading across the glenoid component. A slight superior tilt can position the implant to bear loading more along its stable, central axis during common shoulder motions, increasing compressive contact and reducing micromotion at the interface. This reduction in micromotion is key because loosening is driven by repetitive shear and movement at the implant-bone or implant-cement interface; better central, compressive loading helps stabilize the component over time. That’s why the statement about superior tilt enhancing fixation is considered accurate in this context.

Tilt does affect fixation, it’s not just a cosmetic issue, andExtreme tilting can worsen outcomes, but when applied appropriately, superior tilt can improve how forces are carried by the glenoid component, contributing to longer-lasting fixation.