Comparative mechanical analysis of a looped-suture tendon repair

Area of Science:

• Orthopedic surgery
• Biomaterials science
• Surgical techniques

Background:

• Tendon repair is crucial in orthopedic surgery.
• Existing techniques like the modified Kessler and Bunnell methods have limitations.
• Reducing surgical time is a key goal in tendon repair.

Purpose of the Study:

• To compare the in vitro breaking force of a new looped-suture tendon juncture with established methods.
• To evaluate the efficacy of braided nylon and tetrafluoroethylene sutures in tendon repair.
• To assess the resistance to gap formation for the novel looped-suture technique.

Main Methods:

• Porcine digiti quarti propius tendons were repaired using braided nylon or tetrafluoroethylene sutures.
• Repairs were performed using the looped-suture, modified Kessler, and Bunnell techniques.
• Tendons were subjected to single cycle failure testing on a hydraulic testing machine.

Main Results:

• The looped-suture technique exhibited a mean breaking force statistically similar to the Bunnell technique for both suture materials.
• Both the looped-suture and Bunnell techniques showed statistically greater breaking forces than the modified Kessler technique.
• The looped-suture technique demonstrated intermediate resistance to gap formation between the Bunnell and modified Kessler techniques.

Conclusions:

• The looped-suture technique offers comparable strength to the Bunnell technique and superior strength to the modified Kessler technique.
• This novel technique may provide an effective alternative for tendon repair, potentially reducing surgical time.
• Further research is warranted to explore the clinical applicability and long-term outcomes of the looped-suture technique.