Minimally invasive and open surgical treatment of proximal tibia fractures using a polyaxial locking plate system: a prospective multi-centre study
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The purpose of this study was to determine whether a polyaxial locking plate of the latest generation (NCB PT®, Zimmer Inc.) which can be applied both open and minimally invasively, can be used as a routine method of treatment for proximal tibia fractures.
Eighty-six patients (35 women, 51 men; mean age 51 years) were enrolled in this prospective multicentre trial. Ninety-six percent of the fractures were intra-articular (AO type B and C); 36 % were treated open and 64 % minimally invasively. Follow-up was obtained three, six and 12 months after surgery.
No implant failure occurred. At 12 months, the functional result using a knee-specific score was good to excellent in 95 %, and 99 % of the fractures were radiologically healed.
The system is a versatile implant for proximal tibia fracture treatment. Polyaxiality and a specific locking mechanism are compatible with different fracture patterns. The minimally invasive technique effectively protects soft tissues but should not be performed at the expense of fracture reduction. Early functional results and complication rate are comparable to those in the literature.
KeywordsCancellous Screw Shaft Screw Proximal Tibia Fracture Bone Void Filler Lock Plate System
Conflict of interest
The institutions received financial reimbursement from Zimmer, Inc. for conducting this follow-up. None of the authors received financial reimbursement or anything of value for conducting this follow-up. The last author is an instructional lecturer for trauma courses at the Zimmer Institute™.
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