Stryker Hip Replacement Implant recall Corporation has announced a temporary recall of its Trident PSL and Trident Hemispherical Acetabular Cups used in hip replacement surgery. Stryker Hip Replacement Implant recall has known about problems with the hip devices since at least January 2005 when it began receiving complaints from patients who had received the hip replacement devices. The problem with the hip replacement components are two-fold involving manufacturing processes as well as issues regarding defective design.