Includes quadriceps tendon rupture, patellar fracture, patellar tendon rupture, patellar component failure. Risk factors: previous surgery, patellar resurfacing, malalignment, steroid use. Presentation: extensor lag, inability to extend knee, palpable gap. Management: direct repair (acute), augmentation with graft/allograft (chronic). High failure rates with chronic repairs — need reinforcement.
What is the most common presentation of extensor mechanism failure following total knee arthroplasty (TKA)?
Which of the following is a common risk factor for quadriceps tendon rupture after TKA?
What is the recommended management for an acute quadriceps tendon rupture after TKA?
In chronic cases of patellar tendon rupture after TKA, what is the typical management approach?
What is a common complication associated with the reconstruction of chronic extensor mechanism failures?
Which of the following is NOT a part of the extensor mechanism of the knee?
What anatomical structure transmits the extensor force from the quadriceps muscle to the tibia?
Which surgical technique can increase the risk of patellar tendon avulsion during TKA?
What is a typical finding on physical examination in a patient with quadriceps tendon rupture after TKA?
Which of the following imaging modalities is most useful to confirm a quadriceps tendon rupture?
