The extensor mechanism of the knee plays an important role in many movements of the
lower extremity. Although its main function is to extend the knee, it also stabilizes
the patellofemoral joint and resists passive flexion of the knee when landing from
jumping. Pathologic conditions of the extensor mechanism can be acute or chronic,
and they can negatively affect daily activities. Fortunately, many surgical treatments
are available aimed at restoring function to the injured extensor mechanism. Understanding
the surgical techniques and common complications of these procedures enables the radiologist
to recognize expected and unexpected postoperative imaging appearances.
Keywords
knee - extensor mechanism - injuries - surgical techniques - postoperative appearance
