According to Gross, "ventral hernia is a hernia involving the parietes of the belly, which are rendered defective in consequence of a wound, or accidental separation of some of the muscular and tendinous fibers."
The essential factor in the production of these herniæ is a deficiency in the fibrous aponeuroses which give strength to the abdominal walls. (Kelley.) Dr. Henry O. Marcy says that as a result of the surgical division of the abdominal wall, it may occur from defective union in consequence of improper closure of the parts, and Spencer Wells points out the fact that operators have often failed to include the peritoneum in the line of sutures. Another and not infrequent cause is found in the imperfect or non-union of a portion of the abdominal wall from the use of the drainage-tube and from stitch abscess and long incisions.A review of 340 cases of ventral