Effect of antimicrobial solution lavage on the palmar digital tendon sheath in horses.

The research paper explores the impact of different sanitizing solutions (balanced electrolyte solution, 0.1% povidone-iodine, 0.5% povidone-iodine, and 0.5% chlorhexidine) on the palmar digital tendon sheath in horses. The experiment involved sixteen horses divided into four groups, and it was discovered that certain solutions resulted in severe synovitis, i.e., inflammation of the joint, suggesting they should not be used for tendon sheath lavage or cleaning.

Study Design and Groups

• The study involved sixteen horses which were divided into four different groups, each having four horses.
• Each group was washed with a different antimicrobial solution: balanced electrolyte solution, 0.1% povidone-iodine, 0.5% povidone-iodine, and 0.5% chlorhexidine.

Experiment Process and Outcome

• The purpose of the study was to examine the effects of these four sanitizing solutions on the palmar digital tendon sheath in horses.
• The tendon sheath, a protective layer around a tendon, was washed or cleaned using a medical procedure known as lavage.
• The solutions were evaluated based on the severity of synovitis they caused. Synovitis is the inflammation of the synovial membrane, a soft tissue found in joints.
• The severity of synovitis tends to determine the appropriateness of a solution for use in tendon sheath lavage.

Conclusions Drawn from the Study

• The results indicated that lavage with 0.1% povidone-iodine solution did not appreciably worsen the synovitis compared to the balanced electrolyte solution.
• However, the 0.5% povidone-iodine and 0.5% chlorhexidine solutions resulted in severe synovitis.
• The severity of the synovitis caused by these solutions led to the conclusion that they should not be used for tendon sheath lavage.