Learn the step-by-step technique of the Extra Corporeal Roeder's Knot in this detailed video. Perfect for surgeons and medical students, this video demonstrates the proper way to tie the Roeder's Knot safely and efficiently. Enhance your surgical skills with this clear and practical video guide.

The first laparoscopic sliding knot to be described was the Roeder knot; it has been used for a variety of procedures in all surgical disciplines. It was surmised that the introduction of new modifications in the geometry of the knot paralleled the introduction of its new indications, and that not all modifications improved its security of roeder's knot but still it is most popular extracorporeal knot in laparoscopic surgery. The lack of direct manual contact, for which palpation with current laparoscopic instruments cannot completely compensate is atracting surgeon to use extracorporeal knot in laparoscopic surgery. Roeder's knot is one of the oldest extracorporeal knot which was first time used for appendectomy. The limited movement of laparoscopic instruments that are inserted through a cannula anchored to the abdominal wall. The working field is a cone with a fixed point at the insertion point of the cannula. Because of the limited field of movement of laparoscopic instruments, proper placement of the cannula is critical to tie an entracorporeal knot. In these situation extracorporeal roaders knot is a good alternative.. The lack of normal binocular vision without true depth perception, which makes conventional techniques difficult to apply make these knots easier. Roeder's knot can be safely used to ligate any tubular structure upto 6-8mm in diameter.

The Extra Corporeal Roeder's Knot is a fundamental surgical knot widely used in minimally invasive and laparoscopic surgery. Its popularity stems from its reliability, ease of use, and ability to secure tissue or vessels without requiring direct intra-abdominal knot tying. Understanding this knot is essential for surgical trainees, medical students, and practicing surgeons alike.

What is an Extra Corporeal Roeder's Knot?

The Extra Corporeal Roeder's Knot is a type of sliding knot that is tied outside the patient’s body (extra corporeally) and then advanced into the surgical site using a knot pusher. It was first described by Roeder and has become a cornerstone in laparoscopic suturing due to its versatility and secure locking mechanism.

This knot allows surgeons to:

• Approximate tissue without tension

• Secure ligatures in deep or difficult-to-reach areas

• Reduce the risk of tissue injury compared to direct intra-abdominal knot tying

Indications for Use

The Extra Corporeal Roeder's Knot is commonly used in:

• Laparoscopic surgeries such as cholecystectomy, hernia repair, and gynecologic procedures

• Vessel ligation where precise control of tension is required

• Soft tissue approximation in minimally invasive procedures

Step-by-Step Technique

1. Prepare the suture: Select an appropriate suture material (usually monofilament or braided).

2. Form the knot outside the body: Create a loop and make multiple turns to form the knot. Typically, 2–3 turns are sufficient for security.

3. Lock the knot: Pass the free end through the loop to create the locking mechanism.

4. Advance the knot: Use a knot pusher to slide the knot along the suture into the surgical site.

5. Tighten and secure: Gently pull the suture ends to approximate tissue while ensuring the knot locks in place.

6. Cut excess suture: Trim the ends after confirming secure placement.

Advantages of the Extra Corporeal Roeder's Knot

• Secure and reliable: Once locked, the knot maintains tension effectively.

• Minimally invasive: Eliminates the need for extensive intra-abdominal manipulation.

• Versatile: Can be used in multiple laparoscopic and robotic procedures.

• Time-saving: Tying outside the body is often faster than intra-abdominal knots for beginners.

Tips for Success

• Always maintain proper suture tension while advancing the knot.

• Practice the technique in simulation before performing on patients.

• Choose suture material with sufficient pliability to form a stable knot.

• Avoid excessive force when sliding the knot to prevent tissue injury.

Conclusion

The Extra Corporeal Roeder's Knot is an indispensable skill in modern minimally invasive surgery. Mastering this knot enhances surgical efficiency, safety, and precision. Surgeons and trainees should invest time in practicing this technique to build confidence and improve operative outcomes.