Bert Parcells January 5, 2017 THA Implants FEMORAL HEAD Bert Parcells January 5, 2017 THA Implants The Femoral Head articulates with the Acetabular Liner. The Femoral Head also forms a junction with the Femoral Stem at the Trunnion. We discuss Femoral Head Sizes and Material Options (stainless steel vs. ceramic).