Here are the pre-op & post op X-rays.
Let’s discuss the case here:
Q. What are the issues with this fixation? Which factors led to these issues during the fixation?
A. Fracture reduction is inadequate, Anatomical Articular fragment reduction is not achieved as advised in AO principles of fracture fixation. The incongruence of the knee joint in this patient will predispose it to early degenerative changes and early Osteoarthritis knee.
Adequate exposure and visualization of the articular surface is of prime importance in fixation of such fractures.
These fractures require pre-surgical planning in terms of approach required for accessing each fracture with adequate visualization of articular surface.
Some Surgeons advocate use of arthroscopy to visualize the articular continuity/reduction whereas other group prefer submeniscal arthrotomy for direct visualization of fracture reduction.
Selection of the implant is also important in case of Internal fixation is considered as wide variety of Proximal Tibial plates are available such as L shaped plates, L plates with curved Short limb, T shaped plates or anatomical plates.
These injuries are sometimes best treated with Illizarov Fixation system that allows Early mobilization, early restoration of functioning of the limb with minimal soft tissue damage.
Pre-plan the surgery in-terms of fixation system- Internal fixation/ external fixation. (read implant manual for ideal site of placement of plates)
Plan the necessary approach.
Plan for bone grafting if articular depression is not corrected/ Maintained after lifting the articular margin.
Always temporarily fix the reduction with K wires/ screw to prevent sagging of articular fragment and Visualize the articular congruity.
After confirming the fracture reduction the implant used for this scenario should be L plate instead of Anatomical Proximal tibial plate.
Lateral plate needs to be positioned slightly proximal and posterior in position to hold the posterior fragment.
Medial plate needs to be more posterior and slightly proximal or the fracture should have been adequately reduced and fixed with lag screw and posteromedial plate to be fixed in neutralization mode.