Final answer:
The blade or cylinder that is surgically embedded into the bone during the first surgery is an endosteal implant made of titanium.
Step-by-step explanation:
The blade or cylinder that is surgically embedded into the bone during the first surgery is the endosteal implant. This type of implant is commonly used in orthopedic surgeries, such as joint replacements, to provide stability and support to the bone. It is typically made of titanium, a biocompatible material that allows for integration with the surrounding bone.
An example of an endosteal implant is a total hip joint replacement, where a metal prosthesis is cemented into the top of the femur and the head of the femur is replaced by the rounded head of the prosthesis. This type of implant helps restore function and mobility to the hip joint.