What Is the Effect of Robot Reduction in Displaced Pelvic Fractures? A Multicenter Randomized Clinical Trial

Area of Science:

• Orthopaedic surgery
• Robotics in medicine
• Trauma care

Background:

• Displaced pelvic fractures pose surgical challenges due to complex anatomy and risks to vital structures.
• Conventional manual reduction techniques have limitations in accuracy and increase radiation exposure.
• Robotic assistance shows preclinical promise but lacks clinical validation in randomized controlled trials (RCTs).

Purpose of the Study:

• To compare the reduction quality of robotic versus manual closed reduction in displaced pelvic fractures.
• To assess if robotic closed reduction can decrease intraoperative radiation exposure.
• To evaluate functional outcomes at 12 weeks following robotic or manual closed reduction.

Main Methods:

• A multicenter randomized clinical trial (RCT) involving 92 adult patients with displaced pelvic fractures (Tile Type B or C).
• Patients were randomized 1:1 to either robotic closed reduction (n=46) or manual closed reduction (n=46).
• Reduction quality was assessed using Matta criteria, and intraoperative fluoroscopic exposure and 12-week Majeed scores were secondary outcomes.

Main Results:

• Robotic closed reduction achieved significantly higher rates of excellent or good reduction (96% vs. 48%, p < 0.001).
• Intraoperative surgeon fluoroscopic exposure was substantially lower in the robotic group (median 0 vs. 38 exposures, p < 0.001).
• No significant difference in 12-week functional outcomes (Majeed scores) was observed between the groups (p = 0.55).

Conclusions:

• Robotic closed reduction offers improved accuracy and reduced radiation exposure for displaced pelvic fractures.
• While beneficial for reduction quality, robotic assistance did not demonstrate superior short-term functional outcomes in this trial.
• Further research is needed to assess long-term benefits, optimal fracture pattern selection, and cost-effectiveness.