Quadriceps tendon rupture
Pain and swelling above the knee cap, painful extension. History of ACL repair on the same side.
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Complete disruption of some of the lateral bundles of the lateral part of the quadriceps tendon with intact medial bundles, above the osseotendinous junction, with redundancy and joint effusion in the suprapatellar synovial recess.
There are also tears and edematous changes of the vastus medialis, rectus femoris and vastus lateralis muscles.
Intact ACL reconstruction tunnel and graft.