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Open Access Repair of a Large Ventral Hernia in a Rhesus Macaque (Macaca mulatta) by Using an Abdominal Component Separation Technique

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Here we present a 32-y-old rhesus macaque (Macaca mulatta) with a large recurrent ventral incisional hernia. The initial surgery included midline celiotomy for treatment of endometriosis, in which the animal developed a hernia that was repaired with interposition of mesh. Hernia recurrence at 1 y resulted in a defect measuring 7 × 13 cm, with loss of abdominal domain. Skin breakdown was noted with areas of exposed mesh through the skin with associated acute on chronic infection. Clinically, the animal was lethargic, not eating, and failing to thrive. The present surgical treatment included midline celiotomy, removal of mesh, and attempted primary fascial closure. Due to the large defect and high tension, the fascia could not be closed. To facilitate closure, abdominal component separation technique was used and consisted of skin and subcutaneous dissection, external oblique muscle release, and dissection between the external and internal oblique musculature. This technique allowed for primary fascial closure and resection of excess diseased skin. A piece of polypropylene mesh was placed in a sublay fashion to reinforce the primary fascial closure. The animal tolerated the procedure well and has demonstrated steady weight gain, with no recurrence at 12 mo. Large ventral abdominal hernia defects in after surgery or trauma in NHP can present reconstructive challenges to veterinary surgeons. Failure to achieve a dynamic, low-tension closure can result in hernia recurrence, necessitating additional operations. Abdominal component separation is not commonly used in veterinary surgery and may be a helpful tool in cases of difficult abdominal reconstructions.
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Document Type: Case Report

Affiliations: 1: Division of Plastic and Reconstructive Surgery, University of Wisconsin, Madison, Wisconsin, USA., Email: [email protected] 2: Division of Plastic and Reconstructive Surgery, University of Wisconsin, Madison, Wisconsin, USA 3: Wisconsin National Primate Research Center, Madison, Wisconsin, USA

Publication date: April 1, 2018

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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