Minimally invasive periprosthetic plate osteosynthesis using the locking attachment plate

Area of Science:

• Orthopedic Surgery
• Trauma Surgery
• Biomaterials Engineering

Background:

• Periprosthetic and periimplant fractures pose significant challenges in orthopedic surgery.
• Current fixation methods may have limitations in achieving stable constructs for early mobilization.

Purpose of the Study:

• To evaluate the efficacy of angular stable plates with locking attachment plates (LAP) for treating periprosthetic and periimplant fractures.
• To assess the safety and outcomes of early weight-bearing as tolerated following this fixation technique.

Main Methods:

• Minimally invasive reduction and fixation using large fragment titanium plates and locking head screws.
• Submuscular insertion of plates and optional use of LAP for enhanced stability.
• Early postoperative weight-bearing as tolerated, starting on day 1 under physiotherapy supervision.

Main Results:

• No surgical complications observed in 8 patients (6 periprosthetic, 2 periimplant).
• Mean time to bony union was 14 weeks.
• All patients achieved their prefracture mobility level with no implant loosening.

Conclusions:

• Angular stable plates combined with LAP provide a reliable fixation method for periprosthetic and periimplant fractures.
• Early weight-bearing is feasible and promotes successful functional recovery.
• This technique offers a safe and effective solution for complex fracture management around implants.