Diffusion of tranexamic acid to the joint

Area of Science:

• Pharmacology
• Orthopedics
• Hematology

Background:

• Tranexamic acid is an antifibrinolytic agent.
• Hemophilia involves joint bleeding complications.
• Intra-articular surgeries pose bleeding risks.

Purpose of the Study:

• To determine the diffusion of tranexamic acid into knee joint fluid and synovial membrane.
• To assess the pharmacokinetic profile of tranexamic acid in joint tissues.
• To evaluate the efficacy of tranexamic acid in managing hemophilic joint bleeds.

Main Methods:

• Intravenous administration of tranexamic acid (10 mg/kg) to 17 patients pre-operatively.
• Measurement of drug concentrations in joint fluid and serum at various intervals.
• Analysis of drug diffusion and biologic half-time in joint fluid.

Main Results:

• Tranexamic acid rapidly diffused into knee joint fluid and synovial membrane.
• Joint fluid concentrations of tranexamic acid equaled serum concentrations.
• The biologic half-time of tranexamic acid in joint fluid was approximately 3 hours.

Conclusions:

• Tranexamic acid demonstrates effective diffusion into knee joint tissues.
• It is a valuable adjunct for managing joint bleeds in hemophiliacs.
• It is suitable for use in association with intra-articular operations in hemophiliac patients.