Adhesions from flexor tendon surgery: an animal study comparing surgical techniques

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Histology

Background:

• Hemorrhage can lead to tendon adhesions, scarring, and poor surgical outcomes.
• Bipolar coagulators and surgical lasers are used to achieve hemostasis and limit bleeding during surgery.
• The direct effects of these modalities on tendon tissue and adhesion formation are not well understood.

Purpose of the Study:

• To compare the adhesion formation resulting from three different surgical techniques: sharp scalpel dissection, scalpel dissection with bipolar coagulation, and CO(2) laser dissection.
• To biomechanically and histologically assess the impact of each technique on tendon adhesion.

Main Methods:

• Utilized chicken flexor tendons as a model system.
• Compared meticulous sharp scalpel dissection, sharp dissection with bipolar coagulation, and CO(2) laser dissection.
• Assessed adhesion formation through biomechanical testing and histological analysis.

Main Results:

• Both bipolar coagulation and CO(2) laser application were associated with significantly increased tendon adhesion formation.
• Sharp scalpel dissection alone resulted in the least amount of adhesion.
• These findings highlight the differential impact of surgical modalities on tendon healing and adhesion.

Conclusions:

• Meticulous sharp scalpel dissection is the optimal technique for minimizing adhesion formation in tendon surgery.
• The use of bipolar coagulation and CO(2) lasers in tendon surgery may lead to increased adhesions compared to conventional sharp dissection.
• These findings have direct clinical relevance for improving tendon surgical outcomes.