Hip arthroscopy is a complex procedure that relies heavily on cannulas — small hollow tubes used to access the joint — but the two traditional options each come with significant drawbacks. Circumferential cannulas restrict instrument movement and frequently dislodge, while slotted cannulas require constant removal and reinsertion, increasing operative time and the risk of soft tissue damage.

A team from the University of Colorado has now described a novel "dual-fixed" cannula in Arthroscopy Techniques that aims to solve these problems. The device features slotted geometry (to accommodate large and curved instruments), suture eyelets and distal nostrils that anchor it to the capsulotomy edges via a stay suture, and a clear radiolucent material that doesn't interfere with imaging. Once placed, it stays fixed for the entire procedure — no assistant or switching stick needed.

Key Takeaways:

• The dual-fixed design eliminates repeated cannula removal during instrument exchanges, reducing total operative time
• Lower pump pressures can be used throughout surgery, decreasing the risk of fluid extravasation and complications like intra-abdominal compartment syndrome
• The stay suture doubles as capsulotomy traction, improving visualization and enabling smaller incisions
• The cannula has been used in 1,200+ pre-commercial cases and hundreds of post-launch surgeries with consistent intraoperative benefits

Why it matters: Modern hip arthroscopy can involve dozens to hundreds of instrument exchanges per case. A cannula that stays put, improves visualization, and reduces complication risk could meaningfully improve outcomes for both surgeons and patients.