Causes of extensor apparutus dysfunction
Patellar fractures
quadriceps tendon rupture
patellar tendon rupture
patellar button loosening
Patellar fracture
Conservative is the main stay unless displaced fracture or loose button
Complications of internal fixation is high
if the fracture and implant is stable - conservative
if fracture is stable implant unstable. remove loose implant
if fracture is unstable and implant unstable
consider conservative first
Remove implant and fix
or Recently bypass patella with neoligamant and remove the implant if patella is unfixable
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