About patella fx
Patella so called ‘knee Cap’ acts like a shield for knee joint.
The biggest sesamoid bone in human body.
Patella plays a central role in knee extension mechanism.
What’s patellar fracture?
About 1% of all trauma
Falling directly onto the knee
Most fractures are simple transverse.
What’s standard Treatment?.
Non-displaced fractures are treated by splint or cast at knee extension for 3-4weeks.
Displaced fractures are treated surgically.
There are some surgical option below
Tension band wiring
Tension band wiring through canulated screw
Goal of patellar fractures
1. Establish extensor mechanism
2. Reconstruction Patello-femoral joint.
Problem of patellar fractures
Fracture pattern: More complex than expected
Fixation stability: Not enough for comminuted fracture by tension band wiring
Irritation : tip of the K-wire cause skin irritation
OA: incomplete reduction lead osteoarthritis
Needs for patellar fractures
Utility: Manageable for all type of fracture
Stability : Enough stability for all type of fractures to allow early motion
Reliability : low rate for loss of reduction
Less irritation : low profile implant and low rate for implant failure
Accuracy: complete reduction and fixation for complex fragment