Which material is commonly used in the manufacturing of humeral heads in TSA?

Cobalt chrome is commonly used in the manufacturing of humeral heads in total shoulder arthroplasty (TSA) due to its excellent mechanical properties and biocompatibility. This alloy offers a good balance of strength, corrosion resistance, and wear resistance, making it suitable for joint replacements that experience significant wear over time. The durability of cobalt chrome helps ensure the longevity of the implant, which is critical in maintaining joint function and preventing early failure.

Additionally, cobalt chrome's rigidity allows it to absorb the stresses and loads that are applied during shoulder movement, contributing to its effectiveness in joint applications. It's also used in combination with other materials, such as polyethylene for glenoid components, to optimize the performance of the implant in the shoulder joint.

While other materials like titanium and stainless steel have their own advantages, cobalt chrome's characteristics specifically suit the demands of a humeral head in TSA, making it a common choice in this application. Polyethylene is generally used for the glenoid component rather than the humeral head itself.