A surgical procedure to improve the alignment of the patella.
This is one of a number of procedures known as 'distal realignment procedures', in which the kneecap is effectively repositioned by re-aligning the attachment of the patellar tendon (the tendon under the kneecap) to the underlying tibial tubercle. Also known as TTT or tibial tubercle transfer procedures.
These operations are done to prevent the kneecap going too far over to one side (subluxation) or jumping completely out of its groove (dislocation).
Proximal realignment procedures tackle the problem by adjusting the structures above the kneecap, rather than below it.
In the Elmslie Trillat procedure the tibial tubercle, which you can feel as the knob an inch or two below the lower edge of the kneecap, is cut and moved towards the medial (inner) side. The original procedure is more often these days replaced by the modified procedure called the Elmslie-Trillat-Maquet procedure.
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