Sudden "pop" or tearing
Diffuse swelling
Defect may be palpable above the patella
Partial tears lead to difficulty extending the knee
Complete tears lead to absent straight leg raise while supine or extension of the knee again
Quadriceps tendon rupture
Knee dislocation
Triceps tendon rupture
Knee fractures
Biceps tendon rupture
Patella fracture
Achilles tendon rupture
Segond fracture