A patella fracture results in an interruption of continuity in the stretch flex mechanism and the incongruity of the patellofemoral articulation. Thereby, in addition to restoring the extensor mechanism and achieving a smooth joint surface, the goals of surgical treatment also include undisturbed fracture healing as well as a stable fixation for early functional exercise treatment to maintain joint function.
The development of the variable stable angle patella plate introduced the principle of internal fixation, which is used for the treatment of patella fractures.