Purpose: To report a unique complication associated with transobturator slings. Materials and methods: The evaluation and treatment of a unique infectious complication of transobturator slings is reviewed. Results: A large thigh abscess associated with a transobturator sling was diagnosed and treated. Conclusion: New techniques of sling placement may be associated with unique infectious complications. Slings passing through the obturator foramen and thigh can lead to a significant abscess within the adductor muscles of the thigh.