Classification of periprosthetic fractures

There are many types of periprosthetic fractures. The most commonly used in clinical practice are based on the location of the fracture, the stability of the prosthesis and the bone mass around the prosthesis. They can be divided into three types: A, B and C. Type A refers to fractures occurring at the femoral trochanter. Type B refers to fractures occurring at the femoral stem. Type B can also be divided into three small types. Type B1 refers to fractures at the prosthetic stem, but the prosthesis is not loose and stable. Type B2 refers to fractures at the prosthetic stem, showing prosthesis loosening. Type B3 refers to fractures at the stem site, where the prosthesis has shown loosening and bone mass around the prosthesis has decreased. Type C refers to fractures below the stem, mostly on the femoral condyle.