Transvaginal mesh expert witnesses practice in a variety of fields, including urogynecology, female pelvic medicine, minimally invasive surgery, and biomedical engineering. Some of the most common specialties include obstetrics and gynecology, urology, pelvic floor reconstruction, and medical device design. They can opine on the effects of mesh implantation, device failure, chronic pelvic pain, erosion, revision surgery, and standard of care.